#include <bits/stdc++.h>   using namespace std;   long long gcd(long long a, long long b);   long long mpower(long long x, long long y, long long c);   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     map<long long, long long> M;     vector<long long> aa;     set<long long> st;     set<long long>::iterator itr;     long long n, i, j, k;     cin >> n;     string s;     cin >> s;     long long cnt = 0;     for (i = n - 1; i >= 0; i--) {       long long flag = -1;       if (2 * (i + 1) <= n) {         for (j = i + 1; j < (2 * (i + 1)); j++) {           if (s[j] == s[j - 1 - i]) {             flag = 1;           } else {             flag = -1;             break;           }         }       }       if (flag == 1) {         i = -1;       }       cnt++;     }     cout << cnt;     return 0;   }   long long gcd(long long a, long long b) {     if (b == 0) {       return a;     } else {       return gcd(b, a % b);     }   }   long long mpower(long long x, long long y, long long c) {     long long res = 1;     while (y > 0) {       if (y & 1) res = (res * x) % c;       y = y >> 1;       x = (x * x) % c;     }     return res;   }   