func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, a, b, cnt = 1, point = 0;     vector<int> x;     cin >> n;     for (int i = 0; i < n; i++) {       cin >> a >> b;       if (b == 0)         x.push_back(a);       else {         cnt += (b - 1);         point += a;       }     }     sort(x.begin(), x.end());     for (int j = x.size() - 1; j >= 0 && cnt > 0; j--, cnt--) {       point += x[j];     }     cout << point << endl;     return 0;   }   