Ŀ

գҪıйص䡣
һ repeat (0<repeat<10) repeat 㣺
1  n (1n6) n ׷ a еԪأ a Ǿ, "YES", , "NO"ǾָԽµԪضΪ0ľ, ԽΪӾϽ½ǵߡ
ʾΪ˵
룺
2       (repeat=2)
3  	(n=3)
1  2  3   
0  4  5  
0  0  6 
2  	(n=2)
1  0  
-8  2   

YES 
NO



#include "stdio.h"
#include "math.h"
int main(void)
{
    int flag, i, j, n;
    int a[6][6];
    int repeat, ri;

    scanf("%d", &repeat);
    for(ri = 1; ri <= repeat; ri++){
        scanf("%d", &n);
        for(i = 0; i < n; i++)
            for(j = 0; j < n; j++)
                scanf("%d", &a[i][j]);
/*---------*/
        if(flag != 0)  printf("YES\n");
        else  printf("NO\n");
    }
}
