func_code_string: #include <bits/stdc++.h>   using namespace std;   long double PI = acosl(-1);   bool compare_int(int a, int b) { return (a > b); }   bool compare_string(string a, string b) { return a.size() < b.size(); }   bool compare_pair(const pair<int, int> &a, const pair<int, int> &b) {     if (a.second == b.second)       return a.first > b.first;     else       return (a.second > b.second);   }   int32_t main() {     ios::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     int r, c;     cin >> r >> c;     if (r == 1 and c == 1) {       cout << 0 << endl;       return 0;     }     if (r == 1) {       for (int i = 1; i <= c; i++) cout << i + 1 <<    ;       return 0;     }     if (c == 1) {       for (int i = 1; i <= r; i++) cout << i + 1 << endl;       return 0;     }     for (int i = 1; i <= r; i++) {       for (int j = 1; j <= c; j++) {         cout << i * (r + j);         j == c ? cout << endl : cout <<    ;       }     }   }   