제출 #1161876

#제출 시각아이디문제언어결과실행 시간메모리
1161876prideliqueeCijanobakterije (COCI21_cijanobakterije)C++20
12 / 70
28 ms580 KiB
#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,m;
    cin>>n>>m;
    int cnt[n+1];
    memset(cnt,0,sizeof cnt);
    for(int i=0;i<m;i++)
    {
        int x,y;
        cin>>x>>y;
        if(cnt[x]<2)
        cnt[x]++;
        else
        n--;
        if(cnt[y]<2)
        cnt[y]++;
        else
        n--;
    }
    cout<<n;
}
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