杭电1014 Uniform Generator

/********************************
 *    日期：2011-2-7
 *    作者：SJF
 *    题号：杭电1014
 *  题目：Uniform Generator
 *    结果：AC
 ********************************/
#include <stdio.h>
int main()
{
    long int STEP,MOD;
    while(scanf("%ld%ld",&STEP,&MOD)!=EOF)
    {
        int k=1,count=1,M,N;
        long int seed[100000];
        seed[0]=0;
        seed[k]=(seed[k-1]+STEP)%MOD;
        while(seed[k]!=seed[0])
        {
            k++;
            seed[k]=(seed[k-1]+STEP)%MOD;
            count++;   
        }
        if(count==MOD)
        {
            printf("%10ld%10ld    Good Choice\n\n",STEP,MOD);
        }
        else
        {
            printf("%10ld%10ld    Bad Choice\n\n",STEP,MOD);
        }
    }
    return 0;
}