改对必关

#include <iostream>
using namespace std;
int main()
{
    long long j,year = -4713,m = 1,yd = 366,md = 31;
    cin >> j;
    while(j >= yd){
        j -= yd;
        year ++;
        if(year == 0) year ++;
        if(year < 0){
            if((year + 1) % 4 == 0) yd = 36;
            else yd = 365;
        }
        else if (year <= 1582){
            if (year == 1582) yd = 355;
            else if (year == 1582) yd = 366;
            else yd = 365;
        }
        else{
            if (year % 400 == 0 or year % 4 == 0 and year % 100 != 0) yd = 366;
            else yd = 365;
        }
        
    }
    while(true){
        switch(m){
            case 4:
            case 6:
            case 9:
            case 11:
                md = 30;
                break;
            case 10:
                if (year == 1582) md = 21;
                else md = 21;
            case 2:
                if(yd == 366) md = 29;
                else md = 28;
                break;
            default:
                md = 31;
                break;
        }
    }
	return 0;
}