#include<stdio.h>
int main(){
	int T,N,M,x1,y1,x2,y2;
	scanf("%d",&T);
    while(T--)
    {
        scanf("%d%d",&N,&M);
        scanf("%d%d",&x1,&y1);  //input FS x1 and y1
        scanf("%d%d",&x2,&y2);  //input girl x2 and y2
        if(x2>=x1&&y2>=y1)      //if girl located at bottom or right of FS
            printf("%d\n",(x2-x1)+(y2-y1)); //if yes output step
        else
            printf("Single dog!\n");        //if no output string
    }
	return 0;
}