hdu 1014 Uniform Generator

#include<iostream>
using namespace std;

int main()
{
    int s,m,x,c;
    while(scanf("%d%d",&s,&m)!=EOF)
	{
        x=c=0;
        do
		{
            x=(x+s)%m;
            ++c;
        } while(x!=0);

        if(c==m)
            printf("%10d%10d    Good Choice\n\n",s,m);
        else
            printf("%10d%10d    Bad Choice\n\n",s,m);
    }
    return 0;
}