程序没错，但是一直wrong answer，难道格式有问题？？
#include<stdio.h>
void init_arr(int arr[6])
{
    int i;
    for(i=0;i<6;i++)
        arr[i] = -100;
}
int is_in_arr(int n,int arr[6])
{
    int i;
    for(i=0;i<6;i++)
        if(n == arr[i])
            return 1;
    return 0;
}
int main()
{
    int flag = 0;
    int cl[6],diag45[6],diag135[6];
    int i,j,n,num;
    scanf("%d",&n);
    for(i= 0;i<n;i++)
    {
        flag = 0;
        init_arr(cl);
        init_arr(diag45);
        init_arr(diag135);
        for(j=0;j<6;j++)
        {
            scanf("%d",&num);
            if(is_in_arr(num,cl) || is_in_arr((j-num),diag45) || is_in_arr((j+num),diag135))
            {
                flag = 1;
                break;
            }
            else
            {
                cl[j] = num;
                diag45[j] = j - num;
                diag135[j] = j + num;
            }
        }
        if(flag)
            printf("NO\n");
        else
            printf("YES\n");
    }
    return 0;
}