UVA1594

#include"iostream"#include"algorithm"#include"vector"#include"map"#include"string"#include"deque"#include"queue"#include"stack"#include"cstdio"#include"cmath"using namespace std;int main(){//freopen("a.txt","r",stdin);int t;cin>>t;while(t--){int f=0;int n;cin>>n;vector<int>a;while(n--){int sb;cin>>sb;a.push_back (sb);}int k=1000;while(k--){int start=a.front();for(auto p=a.begin();p!=a.end();p++){if(p!=a.end()-1){*p=abs(*p-*(p+1));//cout<<*p<<" ";}else{*p=abs(*p-start);//cout<<*p<<" ";}}int num=0;for(auto q=a.begin();q!=a.end();q++){if(*q==0)num++;}if(num==a.size()){f=1;break;}}//cout<<endl;if(f)cout<<"ZERO\n";elsecout<<"LOOP\n";}return 0;}