func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, m;   int gcd(int x, int y) {     if (y == 0) return x;     return gcd(y, x % y);   }   int main() {     cin >> n >> m;     string x, y;     cin.ignore();     getline(cin, x);     getline(cin, y);     int lenx = (int)x.length(), leny = (int)y.length();     int g = gcd(lenx, leny);     long long lcm = (long long)lenx * leny / g;     long long ans = lcm;     int **o = new int *[26];     for (int i = 0; i < 26; ++i) {       o[i] = new int[g];     }     for (int i = 0; i < 26; ++i)       for (int j = 0; j < g; ++j) o[i][j] = 0;     for (int i = 0; i < leny; ++i) {       o[y[i] -  a ][i % g]++;     }     for (int i = 0; i < lenx; ++i) {       ans -= (long long)o[x[i] -  a ][i % g];     }     for (int i = 0; i < 26; ++i) delete[] o[i];     delete[] o;     cout << (n * lenx) / lcm * ans;     return 0;   }   