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#include<stdio.h>
int main() {
	int T;
	int N;
	int i;
	char s1[10200],s2[10200];
	scanf("%d",&T);
	while(T--) {
		scanf("%d",&N);
		scanf("%s %s",s1,s2);
		for(i=0; i<N; i++) {
			if((s1[i]=='Y'&&s2[i]=='Z')||(s2[i]=='T'&&(s1[i]=='W'||s1[i]=='L'))||(s1[i]=='D'&&s2[i]=='X'))
				continue;
			else
				break;
		}
		if(i<N)
			printf("YZ同学什么都没拿到T_T\n");
		else
			printf("YZ同学得到了许多金币^_^\n");
	}
}