题解 | #今年的第几天？#

#include <bits/stdc++.h>
using namespace std;
int mouth_day[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 runnian(int year) {
    if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0)return 1;
    else return 0;
}

int main() {
    int sum = 0, year = 0, mouth = 0, day = 0;
    //scanf("%d %d %d", &year, &mouth, &day);
   while(scanf("%d %d %d",&year,&mouth,&day)!=EOF){
    int row = runnian(year);
    for (int i = 0; i < mouth; i++) {
        sum = sum + mouth_day[row][i];
    }
    sum = sum + day;
    printf("%d\n", sum);
   }
    return  0;
}