#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main() {

    /* Enter your code here. Read input from STDIN. Print output to STDOUT */  
    int q,n,x,y;
    scanf("%d",&q);
    for(int i=0;i<q;i++)
        {
        scanf("%d",&n);
        for(int j=0;j<n;j++)
            {
            scanf("%d,%d",&x[j],&y[j]);
        }
        for(int j=0;j<n;j++)
            {
          if(x[j]==0||y[j]==0)
            printf("YES");
            else
                printf("NO");
        }
       
    }
    
    return 0;
}