2005 第几天？

#include<iostream>
using namespace std;

int month1[12] = { 31,28,31,30,31,30,31,31,30,31,30,31 };
int month2[12] = { 31,29,31,30,31,30,31,31,30,31,30,31 };

bool isRYear(int yy) {
    if ((yy % 4 == 0 && yy % 100 != 0) || (yy % 400 == 0)) {
        return true;
    }
    else return false;
}

int main() {
    int yy, mm, dd;
    while (scanf_s("%d/%d/%d", &yy, &mm, &dd) != EOF) {
        int sum = 0;
        if (isRYear(yy)) {
            for (int i = 0;i < mm - 1;i++) {
                sum += month2[i];
            }
            cout << sum + dd << endl;
        }
        else {
            for (int i = 0;i < mm - 1;i++) {
                sum += month1[i];
            }
            cout << sum + dd << endl;
        }
    }
    return 0;
}