题解 | #今年的第几天？#

#include <iostream>
#include <string>

using namespace std;

bool isLeap(int year) {
	if (year % 400 == 0 || year % 100 == 0 || year % 4 == 0)
		return true;
	return false;
}

int main() {
	int arr[13] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };
	int year, month, day;
	while (scanf("%d%d%d", &year, &month, &day)!=EOF) {
		int days = 0;
		for (int i = 1; i < month; i++) {
			if (isLeap(year))
				arr[2] = 29;
			days += arr[i];
		}
		days += day;
		cout << days << endl;
	}
}