func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m;     cin >> n >> m;     int songs = n + m - 1;     cout << songs << endl;     for (int i = 1; i <= n; i++) {       cout << i <<     << 1 << endl;     }     for (int i = 2; i <= m; i++) {       cout << 1 <<     << i << endl;     }     return 0;   }   