제출 #329285

#제출 시각아이디문제언어결과실행 시간메모리
329285gustasonRonald (COCI17_ronald)C++14
0 / 120
11 ms876 KiB
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
bool solve(vector<int> ind) {
    for(int i : ind) {
        if (i == 0) return true;
        if (i > 1) return false;
    }
    return true;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, m;
    cin >> n >> m;
    vector<int> ind(n+1, 0);
    for(int i = 0; i < m; i++) {
        int a, b;
        cin >> a >> b;
        ind[a]++;
        ind[b]++;
    }
    cout << (solve(ind) ? "DA" : "NE");
    return 0;
}
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