poj 2575 Jolly Jumpers

#include<string.h>#include<stdio.h>#include<math.h>int n;bool v[10005];int a[3005];int main(){int i;while(scanf("%d",&n)!=EOF){memset(v,false,sizeof(v));memset(a,0,sizeof(a));scanf("%d",&a[0]);for(i=1;i<n;i++){scanf("%d",&a[i]);int tmp=abs(a[i]-a[i-1]);v[tmp]=true;}for(i=1;i<=n-1;i++)if(!v[i]){printf("Not jollyn");break;}if(i==n) printf("Jollyn");}return 0;}