first commit

2022-12-15 23:51:04 +07:00
commit 87d51fb251
292 changed files with 12623 additions and 0 deletions
@@ -0,0 +1,35 @@
+import java.util.*;
+
+public class Main {
+    static class pair {
+        int x, y;
+    }
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        String s = sc.next();
+        ArrayList<pair> a = new ArrayList<>();
+        for (char c = 'A'; c <= 'Z'; c++) {
+            int i = 0;
+            pair x = new pair();
+            for (int j = 0; j < s.length(); j++) {
+                if (s.charAt(j) == c) {
+                    if (i == 0) {
+                        x.x = j;
+                        i++;
+                    } else
+                        x.y = j;
+                }
+            }
+            a.add(x);
+        }
+        int cnt = 0;
+        for (int i = 0; i < a.size() - 1; i++) {
+            for (int j = i + 1; j < a.size(); j++) {
+                if (a.get(i).y < a.get(j).x || a.get(j).y < a.get(i).x || (a.get(i).x-a.get(j).x) * (a.get(j).y -a.get(i).y) > 0)
+                    continue;
+                cnt++;
+            }
+        }
+        System.out.println(cnt);
+    }
+}