HOJ 001 Problem : 1 - Breakfast

[無]

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>


int main()
{
    int inp;
    while((scanf("%d",&inp)!=EOF) && inp )
    {
        if((inp==1)||(inp==2)||(inp==4)||(inp==7))
        {
            printf("This is Kongming's Trap!!!\n");
            continue;
        }
        int a,b,k;
        if(inp%3==0){a=inp/3;b=0;}
        if(inp%3==1){a=(inp-10)/3;b=2;}
        if(inp%3==2){a=(inp-5)/3;b=1;}
        k=a/5;
        a-=5*k;
        b+=3*k;
        printf("%d\n",a+b);
    }
    return 0;
}