#include<cstdio>

#include<iostream>

using namespace std;

void read(int &x)

{

    x=; char c=getchar();

    while(!isdigit(c)) c=getchar();

    while(isdigit(c)) { x=x*+c-''; c=getchar(); }

}

int SG(int n,int m)

{

    int ans=;

    while()

    {

        if(n& && m&) return ans;

        else if(n&) n++;

        else if(m&) m++;

        else

        {

            ans++;

            n>>=;

            m>>=;

        }

    }

}

int main()

{

    int T,t,n,m,ans;

    read(T);

    while(T--)

    {

        read(t); t>>=;

        ans=;

        while(t--)

        {

            read(n); read(m);

            ans^=SG(n,m);

        }

        puts( ans ? "YES" : "NO" );

    }

    return ;

}