first commit

J03036 - XOAY VÒNG KÝ TỰ.java

@@ -0,0 +1,39 @@
+import java.util.*;
+
+public class non {
+
+    static int turn(String a, String b){
+        if(a.length() != b.length()) return -1;
+        String s = a;
+        for(int i=0;i<=a.length();i++){
+            if(s.compareTo(b) == 0) return i;
+            s = s.substring(1) + s.charAt(0);
+        }
+        return -1;
+    }
+
+    static void solve(String[] a){
+        int ans = 1000000;
+        for(String i: a){
+            int cnt = 0;
+            for(String j:a){   
+                int x = turn(j, i);
+                if(x==-1){
+                    System.out.println(-1);
+                    return;
+                }
+                cnt+=x;
+            }
+            ans=Math.min(ans, cnt);
+        }
+        System.out.println(ans);
+    }
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        int n = sc.nextInt();
+        String[] a = new String[n];
+        for(int i=0;i<a.length;i++) a[i] = sc.next();
+        solve(a);
+    }
+}