Snackdown'17 Round 2 1.cpp

#include<bits/stdc++.h>

using namespace std;

int main()
{

    int i,j,n,m,t;

    cin>>t;

    while(t--)
    {
        cin>>n>>m;

        int a[m][2];

        for(i=0;i<m;i++)
            cin>>a[i][0]>>a[i][1];

        if(n%2!=0)
            cout<<"no\n";
        else
        {
            cout<<"yes\n";
        }

    }
}