Sunday, April 17, 2011

11934 - Magic Formula

#include<stdio.h>

int main()
{
    register int a,b,c,d,n,i,l,f;
    //freopen("in.txt","r",stdin);

    while(scanf("%d%d%d%d%d",&a,&b,&c,&d,&l)&&(a+b+c+d+l))
    {
        n=0;
        for(i=0;i<=l;i++)
        {
            f=a*i*i+b*i+c;
            if(f%d==0)n++;
        }
        printf("%d\n",n);
    }
    return 0;
}

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