题解 | #今年的第几天？#

#include <iostream>
using namespace std;

int daytable[2][13]={
    {0,31,28,31,30,31,30,31,31,30,31,30,31},
    {0,31,29,31,30,31,30,31,31,30,31,30,31}
};

int main(){
    int year,month,day;
    while(cin>>year && cin>>month && cin>>day){
        int leap;
        leap=((year%4==0 && year%100!=0) || year%400==0);
        int days=0;
        for(int i=0;i<month;i++)
            days+=daytable[leap][i];
        days+=day;
        cout<<days<<endl;
    }
}