#include <bits/stdc++.h>
using namespace std;
int main() {
int t;
cin >> t;
while(t--)
{
int a,b;
cin >> a >> b;
if(a%2==0 && b%2==0)
{
cout << "YES" << endl;
}
else if(a%2==1 && b%2==1)
{
cout << "NO" << endl;
}
else if(a%2==0 && b%2==1)
{
cout << "YES" << endl;
}
else
{
cout << "NO" << endl;
}
}
return 0;
}
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