func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long INF = 1e18;   struct data {     int points;     string name;     data(int p, string n) {       points = p;       name = n;     }     data() {       points = -1;       name =   ;     }   };   inline bool cmp(data d1, data d2) { return (d1.points > d2.points); }   int main() {     int n, m, r, points;     cin >> n >> m;     string name;     vector<vector<data>> reg(m);     for (auto i(0); i < n; ++i) {       cin >> name >> r >> points;       r--;       if (reg[r].size() < 3) {         reg[r].push_back(data(points, name));         sort(reg[r].begin(), reg[r].end(), cmp);       } else {         reg[r].push_back(data(points, name));         sort(reg[r].begin(), reg[r].end(), cmp);         reg[r].resize(3);       }     }     for (auto i(0); i < m; ++i) {       if (reg[i].size() == 2) {         cout << reg[i][0].name <<     << reg[i][1].name << endl;         ;       } else if (reg[i][1].points == reg[i][2].points) {         cout <<  ?  << endl;       } else {         cout << reg[i][0].name <<     << reg[i][1].name << endl;       }     }     return 0;   }   