#include<iostream>

bool j(int y)
{
	return (y % 4 == 0 && y % 100 != 0) || y % 400 == 0;
}

void solve(int date[3])
{
	int they{date[0]}, them{date[1]}, tdby{date[2]};
	int m[13] = {29,
		31, 28, 31,
		30, 31, 30,
		31, 31, 30,
		31, 30, 31
	};
	if(tdby - 2 <= 0) {
		if(j(they) && them == 3) {
			tdby += m[0] - 2;
			them = 2;
		}
    else if(them == 1) {
			they--;
			them = 12;
			tdby += m[12] - 2;
		}
    else {
			them--;
			tdby += m[them] - 2;
		}
	}
  else {
		tdby -= 2;
	}
	printf("%d-%02d-%02d", they, them, tdby);
}

int main()
{
	int date[3];
	scanf(
		"%d-%d-%d",
		&date[0], &date[1], &date[2]
	);
	solve(date);
	return 0;
}