#include <bits/stdc++.h>   using namespace std;   int main() {     int n, x = 0, y = 0;     string a, b;     cin >> a >> b;     if (a.size() > b.size()) {       n = a.size();     } else {       n = b.size();     }     for (int i = 0; i < n; i++) {       if (b[x] == a[y]) {         x++;         y++;       } else {         x++;       }       if (b[x] == 0 || a[y] == 0) {         cout << (y + 1);         break;       }     }   }   