今年的第几天？

题目

代码

#include<iostream>
#include<algorithm>
using namespace std;

int ISYEAP(int x){
    if((x%100!=0 && x % 4 == 0) || (x % 400 == 0) )return 1;
    else return 0;
}
int dayOfMonth[13][2] = {
    0,0,
    31,31,
    28,29,
    31,31,
    30,30,
    31,31,
    30,30,
    31,31,
    31,31,
    30,30,
    31,31,
    30,30,
    31,31
};
typedef struct Date{
    int Day;
    int Month;
    int Year;
    void nextDay(){
        Day++;
        if(Day > dayOfMonth[Month][ISYEAP(Year)]){
            Day = 1;
            Month++;
            if(Month > 12){
                Month = 1;
                Year++;
            }
        }
    }
}Date;

int buf[3001][13][32];
int main(){
    Date tmp;
    tmp.Year = 0,tmp.Month = 1,tmp.Day = 1;
    int cnt = 0;
    while(tmp.Year != 3001){
        buf[tmp.Year][tmp.Month][tmp.Day] = cnt;
        tmp.nextDay();
        cnt++;
    }
    int y,m,d;
    while(scanf("%d%d%d",&y,&m,&d) != EOF){
        int days = abs(buf[y][m][d] - buf[y][1][1]) + 1;  //算和今年元旦的差值
        printf("%d
",days);
    }
    return 0;
}