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