#include <iostream>
#include <math.h>

using namespace std;

int main()
{
    int n,x,y;
    cin>>n;
    for (int i = 0; i < n; i++)
    {
        cin>>x>>y;
        if(y*y <= x)
        {
        if(x%2 == 0)
        {
            if(y%2 == 0)
                cout<<"YES"<<endl;
            else
                cout<<"NO"<<endl;
        }
        else
        {
            if(y%2 != 0)
                cout<<"YES"<<endl;
            else
                cout<<"NO"<<endl;
        }
        }
        else
        {
            cout<<"NO"<<endl;
        }
        
        
        
    }
}