Codeforces Round #579 (Div. 3)

A Circle of Students

n个人，编号1-n，绕成环，从1开始，问能否顺时针或逆时针到达n

#include
#include
#include
using namespace std;
const int maxn=2010;
const int mod=1e9+7;
#define inf 0x3f3f3f3f
#define ll long long

int a[maxn],n,b[maxn];

int main()
{
	int t;scanf("%d",&t);
	while(t--){
		scanf("%d",&n);
		for(int i=1;i