HDOJ 2005 第几天

#include<iostream>
#include<stdio.h>

using namespace std;

int main()
{
    int year,month,day;
    int md[12]={31,28,31,30,31,30,31,31,30,31,30,31};
    while(scanf("%d/%d/%d",&year,&month,&day)!=EOF)
    {
        int sum=0;
        for(int i=0;i<month-1;i++)
        {
            sum+=md[i];
        }
        sum+=day;
        if(month>2)
        {
            if((year%4==0&&year%100!=0)||year%400==0)
                sum++;
        }
        cout<<sum<<endl;
    }
}