Submission #516804

#	Time	Username	Problem	Language	Result	Execution time	Memory
516804		Marslai24	Logičari (COCI21_logicari)	C++17	10 / 110	43 ms	6804 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long // a.k.a. TLE creator
#define all(x) x.begin(), x.end()
template<class A, class B> istream& operator >>(istream &o, pair<A, B> &x){return o >> x.first >> x.second;}
template<class A, class B> ostream& operator <<(ostream &o, pair<A, B> &x){return o << x.first << ' ' << x.second << ' ';}
void setIO(){ios::sync_with_stdio(false); cin.tie(0);}
const int INF = INT_MAX, MOD = 998244353, N = 1e5 + 2, K = __lg(N) + 1;

signed main(){
    setIO();
    int n;
    cin >> n;
    vector<int> adj[N];
    for(int i = 0; i < n; i++){
        int u, v;
        cin >> u >> v;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    cout << (n % 4 == 0 ? n / 2 : -1);
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 40
• Subtask 4: 0 / 50