POJ 2575

                                                                                           Description

A sequence of n > 0 integers is called a jolly jumper if the absolute values of the difference between successive elements take on all the values 1 through n-1. For instance,

1 4 2 3

is a jolly jumper, because the absolutes differences are 3, 2, and 1 respectively. The definition implies that any sequence of a single integer is a jolly jumper. You are to write a program to determine whether or not each of a number of sequences is a jolly jumper.

Input

Each line of input contains an integer n < 3000 followed by n integers representing the sequence.

Output

For each line of input, generate a line of output saying "Jolly" or "Not jolly".

Sample Input

4 1 4 2 35 1 4 2 -1 6

Sample Output

JollyNot jolly

第一次写博客,比较简单的一题,不过学会了使用set,还是有点小成就的!

#include <iostream>#include <cmath>#include <vector>#include <set>#include <algorithm>#include <bitset>using namespace std;int main(){int num, index, temp;while( scanf( "%d", &num ) != EOF ){if( num == 1 ){scanf( "%d", &temp );printf( "Jolly/n" );}else{int *array = new int[ num ];set< int > test;for( index = 0; index < num; ++index ){scanf( "%d", array + index );}for( index = 0; index < num - 1; ++index ){if( abs( *( array + index + 1 ) - *( array + index ) ) < num && *( array + index + 1 ) != *( array + index ) ){test.insert( abs( *( array + index + 1 ) - *( array + index ) ) );}}if( test.size() == num - 1 ){printf( "Jolly/n" );}else{printf( "Not jolly/n" );}}}return 0;}