uva1594-Ducci-模拟

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;
int main()
{
int t, n;
scanf("%d", &t);
while (t--) {
scanf("%d", &n);
int a
, sum = 0;
for (int i=0; i<n; i++) {
scanf("%d", &a[i]); sum += a[i];
}
int cnt = 0;
while (sum != 0) {
int tmp = a[0];
sum = 0;
for (int i=0; i<n; i++) {
if (i < n-1) a[i] = abs(a[i] - a[i+1]);
else a[i] = abs(a[i] - tmp);
sum += a[i];
}
cnt++;
if (cnt == 666) { printf("LOOP\n");goto hhh;}
}
printf("ZERO\n");
hhh:;
}
return 0;
}