求助，新人鄙陋，求大神破

#include<stdio.h>
int main()
{
    int x,x1; long zhou,n,p1,p2,p3,p;
    zhou=0;
    x1=0;
    p2=0;
    scanf("%d %d",&x,&n);
    if ((x+n)%7!=0)x1=(x+n)%7;
    else x1=7;
    zhou=(x+n)/7-2;
    if(x==6||x==7)p1=0;
    else p1=(6-x)*250;
    if (zhou>0) p2=zhou*1250;
    if(x1==6||x1==7)p3=1250;
    else p3=x1*250;
    p=p1+p2+p3;
    printf("%d",p);
    return 0;
}