#include <iostream>
#include <string>
using namespace std;
bool leap(int Y){
	return Y % 400 == 0 || Y % 100 != 0 && Y % 4 == 0;
}
void next(int &Y, int &M, int &D){
	if (M == 2){
		if (leap(Y)){
			if (D == 29){
				M++;
				D = 1;
			} else {
				D++;
			}
		} else {
			if (D == 28){
				M++;
				D = 1;
			} else {
				D++;
			}
		}
	} else if (M == 4 || M == 6 || M == 9 || M == 11){
		if (D == 30){
			M++;
			D = 1;
		} else {
			D++;
		}
	} else if (M == 12){
		if (D == 31){
			Y++;
			M = 1;
			D = 1;
		} else {
			D++;
		}
	} else {
		if (D == 31){
			M++;
			D = 1;
		} else {
			D++;
		}
	}
}
int main(){
	int Y;
	char s1;
	int M;
	char s2;
	int D;
	cin >> Y >> s1 >> M >> s2 >> D;
	next(Y, M, D);
	next(Y, M, D);
	string Y2 = to_string(Y);
	while (Y2.size() < 4){
		Y2 = '0' + Y2;
	}
	string M2 = to_string(M);
	while (M2.size() < 2){
		M2 = '0' + M2;
	}
	string D2 = to_string(D);
	while (D2.size() < 2){
		D2 = '0' + D2;
	}
	cout << Y2 << s1 << M2 << s2 << D2 << endl;
}