有什么问题呀/(ㄒoㄒ)/~~

话不多说，直接上代码

#define _CRT_SECURE_NO_WARNINGS 1
#include<cstdio>
#include<algorithm>
using namespace std;
int a[1001];
int n, N, j;
bool cmd(int x, int y) {
	return x < y;
}
int main() {
	scanf("%d", &n);
	for (int i = 0; i < n; i++) {
		scanf("%d", &N);
		if (i != 0) {
			a[i] += N;
			a[i - 1] = abs(a[i - 1] - N);
		}
	}
	sort(a, a + n, cmd);
	for (int i = 1; i < n - 2; i++) {
		if (a[i - 1] != i) {
			printf("Not jolly");
			return 0;
		}
	}
	printf("Jolly");
	return 0;
}