diff --git a/java/priv/pront/code/mati/province/comp/Main1.java b/java/priv/pront/code/mati/province/comp/Main1.java
new file mode 100644
index 0000000..8f57e19
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main1.java
@@ -0,0 +1,28 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 14:01
+ */
+public class Main1 {
+
+    static int a, b, ans = 0;
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        a = scanner.nextInt();
+        b = scanner.nextInt();
+        for (int i = a; i <= b; i++) {
+            int res = 0;
+            if(i % 8 != 0){
+                for (int j = i; j >= 0; j--) {
+                    res += j;
+                }
+            }
+            ans += res;
+        }
+        System.out.println(ans);
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main10.java b/java/priv/pront/code/mati/province/comp/Main10.java
new file mode 100644
index 0000000..6927b5f
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main10.java
@@ -0,0 +1,60 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 15:51
+ */
+public class Main10 {
+
+    static int n, m, cnt = 0;
+    static int[][] g;
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        n = scanner.nextInt();
+        m = scanner.nextInt();
+        g = new int[n][m];
+        for (int i = 0; i < n; i++) {
+            for (int j = 0; j < m; j++) {
+                g[i][j] = scanner.nextInt();
+            }
+        }
+        int i = 0, j = 0;
+        while (i < n && j < m) {
+            if (!check(g[i][j])) {
+                if (j + 1 >= m) {
+                    j = 0;
+                    i++;
+                } else {
+                    j++;
+                }
+            }else{
+                cnt++;
+                int t = g[i][j] % 10;
+                if(j + t >= m){
+                    j = 0;
+                    i++;
+                }else{
+                    j += t;
+                }
+            }
+        }
+        System.out.println(cnt);
+
+    }
+
+    private static boolean check(int a) {
+        boolean flag = true;
+        int target = (int) Math.sqrt(a);
+        for (int i = 2; i <= target; i++) {
+            if (a % i == 0) {
+                flag = false;
+                break;
+            }
+        }
+        return flag;
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main11.java b/java/priv/pront/code/mati/province/comp/Main11.java
new file mode 100644
index 0000000..4abe458
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main11.java
@@ -0,0 +1,40 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 16:03
+ */
+public class Main11 {
+
+    static String s2, s1;
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        s1 = scanner.next();
+        s2 = scanner.next();
+        s1 = s1.replaceAll("!", "");
+        if (s1.contains(s2)) {
+            System.out.println("True");
+        }else{
+            System.out.println("False");
+        }
+//        String[] s = s2.split("");
+//        String[] ss = s1.split("");
+//        int j = 0;
+//        for (int i = 0; i < ss.length; i++) {
+//            if (ss[i].equals(s[j])) {
+//                j++;
+//                if(j == s.length) break;
+//            }
+//        }
+//        if(j == s.length){
+//            System.out.println("True");
+//        }else{
+//            System.out.println("False");
+//        }
+
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main12.java b/java/priv/pront/code/mati/province/comp/Main12.java
new file mode 100644
index 0000000..6768315
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main12.java
@@ -0,0 +1,34 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 16:50
+ */
+public class Main12 {
+
+    static int t;
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        t = scanner.nextInt();
+        while (t-- > 0) {
+            int cnt = 0;
+            String s0 = scanner.next();
+            String s = scanner.next();
+            for (int i = 0; i < s0.length() - s.length(); i++) {
+                int alter = 0;
+                int k = i;
+                for (int j = 0; j < s.length(); j++) {
+                    if(s0.charAt(k) != s.charAt(j)){
+                        alter++;
+                    }
+                    k++;
+                }
+                if(alter <= 3) cnt++;
+            }
+            System.out.println(cnt);
+        }
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main13.java b/java/priv/pront/code/mati/province/comp/Main13.java
new file mode 100644
index 0000000..4f0d103
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main13.java
@@ -0,0 +1,41 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.HashSet;
+import java.util.Scanner;
+import java.util.Set;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 16:24
+ */
+public class Main13 {
+
+    static int n;
+    static Set<Character> set = new HashSet<>();
+    static char[][] g;
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        n = scanner.nextInt();
+        g = new char[n][n];
+        for (int i = 0; i < n; i++) {
+           g[i] =scanner.next().toCharArray();
+        }
+        int i = 0, j  = 0;
+        while (i < n && j < n) {
+            if (!set.contains(g[i][j])) {
+                set.add(g[i][j]);
+            }else{
+                break;
+            }
+            i++;
+            j++;
+        }
+        if(i >= n && j >= n){
+            System.out.println("accept");
+        }else{
+            System.out.println("refuse");
+        }
+
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main2.java b/java/priv/pront/code/mati/province/comp/Main2.java
new file mode 100644
index 0000000..da4ac00
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main2.java
@@ -0,0 +1,34 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 14:07
+ */
+public class Main2 {
+
+    static String s;
+    static int[] a;
+    static char ans = '0';
+    static int max = 0;
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        s = scanner.next();
+        a = new int[26];
+        for (int i = 0; i < s.length(); i++) {
+           char cur = s.charAt(i);
+           a[cur - 'A']++;
+        }
+
+        for (int i = 0; i < a.length; i++) {
+            if(a[i] > max){
+                max = a[i];
+                ans = (char) ('A' + i);
+            }
+        }
+        System.out.println(ans);
+
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main3.java b/java/priv/pront/code/mati/province/comp/Main3.java
new file mode 100644
index 0000000..8859d9c
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main3.java
@@ -0,0 +1,25 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Arrays;
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 14:15
+ */
+public class Main3 {
+
+    static int n;
+    static int[]a ;
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        n = scanner.nextInt();
+        a = new int[n];
+        for (int i = 0; i < n; i++) {
+            a[i] = scanner.nextInt();
+        }
+        Arrays.sort(a);
+        System.out.println(a[n - 1] - a[0]);
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main4.java b/java/priv/pront/code/mati/province/comp/Main4.java
new file mode 100644
index 0000000..0011d32
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main4.java
@@ -0,0 +1,47 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 14:21
+ */
+public class Main4 {
+
+    static int a, b, n = 0, len;
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        a = scanner.nextInt();
+        b = scanner.nextInt();
+        len = (a + "").length();
+        for (int i = 0; i < len; i++) {
+            if (huzhi(a, b) != 1) {
+                change();
+            }else{
+                System.out.println(i);
+                return;
+            }
+        }
+        System.out.println(-1);
+    }
+
+
+    private static int huzhi(int a, int b) {
+        if(a % b == 0){
+            return b;
+        }
+        return huzhi(b,a % b);
+    }
+
+    private static void change(){
+        String aa = a + "";
+        String bb = b + "";
+        StringBuilder sba = new StringBuilder(aa.substring(1, aa.length()));
+        StringBuilder sbb = new StringBuilder(bb.substring(1, bb.length()));
+        sba.append(aa.charAt(0));
+        sbb.append(bb.charAt(0));
+        a = Integer.parseInt(sba.toString());
+        b = Integer.parseInt(sbb.toString());
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main5.java b/java/priv/pront/code/mati/province/comp/Main5.java
new file mode 100644
index 0000000..352590c
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main5.java
@@ -0,0 +1,28 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 14:33
+ */
+public class Main5 {
+
+    static int n;
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        n = scanner.nextInt();
+        for (int i = 1; i <= n; i++) {
+            if(i % 3 != 0){
+                for (int j = 1; j <= i; j++) {
+                    System.out.print("*");
+                }
+            }else{
+                System.out.print("|");
+            }
+
+            System.out.println();
+        }
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main6.java b/java/priv/pront/code/mati/province/comp/Main6.java
new file mode 100644
index 0000000..1142806
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main6.java
@@ -0,0 +1,34 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 14:35
+ */
+public class Main6 {
+
+    static int n;
+    static String s;
+    static StringBuilder sb = new StringBuilder();
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        n = scanner.nextInt();
+        s = scanner.next();
+        sb.append(s.charAt(0));
+        int idx = 1;
+        int nal = 0;
+        while(idx < s.length()) {
+            if(nal == n - 1){
+                sb.append(s.charAt(idx));
+                nal = 0;
+            }else{
+            nal++;
+
+            }
+            idx++;
+        }
+        System.out.println(sb.toString());
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main7.java b/java/priv/pront/code/mati/province/comp/Main7.java
new file mode 100644
index 0000000..43414d1
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main7.java
@@ -0,0 +1,92 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.LinkedList;
+import java.util.Queue;
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 14:50
+ */
+public class Main7 {
+
+    static int n;
+    static int[] dx = {-1, 1, 0, 0}, dy = {0, 0, -1, 1};
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        n = scanner.nextInt();
+        while (n-- > 0) {
+            int n = scanner.nextInt();
+            int m = scanner.nextInt();
+            int t1 = -1, t2 = -1;
+            int x = 0, y = 0, z = -1, h = -1;
+            boolean[][] st = new boolean[n][m];
+            boolean flag1 = false;
+            boolean flag2 = false;
+            char[][] g = new char[n][m];
+            Queue<int[]> queue = new LinkedList<>();
+            Queue<int[]> queue1 = new LinkedList<>();
+            for (int i = 0; i < n; i++) {
+                g[i] = scanner.next().toCharArray();
+            }
+            for (int i = 0; i < n; i++) {
+                for (int j = 0; j < m; j++) {
+                    if (g[i][j] == 'P') {
+                        x = i; y  = j;
+                    }
+                }
+            }
+
+            queue.add(new int[]{x, y ,0});
+            st[x][y] = true;
+            while (!queue.isEmpty()) {
+                int[] poll = queue.poll();
+                if(g[poll[0]][poll[1]] == 'K'){
+                    flag1 = true;
+                    t1 = poll[2];
+                    z = poll[0];
+                    h =poll[1];
+                    break;
+                }
+                for (int i = 0; i < 4; i++) {
+                    int nx = dx[i] + poll[0];
+                    int ny = dy[i] + poll[1];
+                    if(nx < 0 || nx >= n|| ny < 0 || ny >= m || st[nx][ny] || g[nx][ny] == '#' || g[nx][ny] == 'E') continue;
+                    st[nx][ny] = true;
+                    queue.add(new int[]{nx, ny, poll[2] + 1});
+                }
+            }
+
+            if(z == -1){
+                System.out.println("No solution");
+                continue;
+            }
+            st = new boolean[n][m];
+            queue1.add(new int[]{z, h, 0});
+            st[z][h] = true;
+            while (!queue1.isEmpty()) {
+                int[] poll = queue1.poll();
+                if(g[poll[0]][poll[1]] == 'E'){
+                    flag2 = true;
+                    t2 = poll[2];
+                    break;
+                }
+                for (int i = 0; i < 4; i++) {
+                    int nx = dx[i] + poll[0];
+                    int ny = dy[i] + poll[1];
+                    if(nx < 0 || nx >= n|| ny < 0 || ny >= m || st[nx][ny] || g[nx][ny] == '#' ) continue;
+                    st[nx][ny] = true;
+                    queue1.add(new int[]{nx, ny, poll[2] + 1});
+                }
+            }
+
+            if (!flag1 || !flag2) {
+                System.out.println("No solution");
+            }else{
+                System.out.println(t1 + t2);
+            }
+
+        }
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main8.java b/java/priv/pront/code/mati/province/comp/Main8.java
new file mode 100644
index 0000000..b4d5572
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main8.java
@@ -0,0 +1,49 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 15:21
+ */
+// FIXME
+public class Main8 {
+
+    static int n, ans = 0, ridx = 499;
+    static int[][] g;
+    static List<List<Integer>> list = new ArrayList<>();
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        n = scanner.nextInt();
+        g = new int[1005][1005];
+        for (int i = 0; i < 1005; i++) list.add(new ArrayList<>());
+        for (int i = 0; i < n; i++) {
+            int row = scanner.nextInt();
+            int col = scanner.nextInt();
+            list.get(row).add(col);
+        }
+
+        for (int i = 0; i < 1000; i++) {
+            int alter = 0;
+            ans += ridx + 1;
+            if (list.get(i).size() > 0) {
+                List<Integer> integers = list.get(i);
+                for (Integer integer : integers) {
+                    alter += (i - integer);
+                }
+            }
+            if (ridx + alter > 999) {
+                ridx = 999;
+            } else if(ridx + alter < 0) {
+                ridx = 0;
+            }else{
+                ridx += alter;
+            }
+        }
+        System.out.println(ans);
+    }
+}
diff --git a/java/priv/pront/code/mati/province/comp/Main9.java b/java/priv/pront/code/mati/province/comp/Main9.java
new file mode 100644
index 0000000..684581c
--- /dev/null
+++ b/java/priv/pront/code/mati/province/comp/Main9.java
@@ -0,0 +1,33 @@
+package priv.pront.code.mati.province.comp;
+
+import java.util.Scanner;
+
+/**
+ * @Description:
+ * @Author: pront
+ * @Time:2023-11-18 15:40
+ */
+public class Main9 {
+
+    static int n;
+    static int a = 0, b = 0, c = 0;
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        n = scanner.nextInt();
+        for (int i = 1; i <= n; i++) {
+            String s = i + "";
+            if((i % 3 == 0 || s.contains("3")) && (i % 5 == 0 || s.contains("5"))) {
+                c++;
+            }else if(i % 5 == 0 || s.contains("5")) {
+                b++;
+            }else if(i % 3 == 0 || s.contains("3")){
+                a++;
+            }
+
+        }
+        System.out.println(a);
+        System.out.println(b);
+        System.out.println(c);
+
+    }
+}