Submission #926603

#	Time	Username	Problem	Language	Result	Execution time	Memory
926603		haxorman	Untitled (POI11_imp)	C++14	72 / 100	903 ms	65536 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define int long long

const int mxN = 3007;

vector<int> g[mxN];

int32_t main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    
    int n, m;
    cin >> n >> m;

    for (int i = 0; i < m; ++i) {
        int u, v;
        cin >> u >> v;

        g[u].push_back(v);
        g[v].push_back(u);
    }
    
    set<int> left;
    for (int u = 1; u <= n; ++u) {
        left.insert(u);
    }

    set<int> check;
    for (int u = 1; u <= n; ++u) {
        if (!left.count(u)) {
            continue;
        }
        
        check.insert(u);
        for (auto v : g[u]) {
            check.insert(v);
        }

        for (int v = 1; v <= n; ++v) {
            if (!check.count(v) && left.count(v)) {
                left.erase(u);
                left.erase(v);
                break;
            }
        }
        check.clear();
    }
    
    if (left.size() < n / 3) {
        cout << "gay\n";
        exit(0);
    }

    auto it = left.begin();
    for (int i = 0; i < n / 3; ++i) {
        cout << *it << ' ';
        if (i < n / 3 - 1) {
            ++it;
        }
    }
    cout << "\n";
}

Compilation message (stderr)

imp.cpp: In function 'int32_t main()':
imp.cpp:50:21: warning: comparison of integer expressions of different signedness: 'std::set<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   50 |     if (left.size() < n / 3) {
      |         ~~~~~~~~~~~~^~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 9 / 9
• Subtask 8: 9 / 9
• Subtask 9: 0 / 9
• Subtask 10: 0 / 9
• Subtask 11: 0 / 10