#include <bits/stdc++.h>
using namespace std;

struct tm T;

int main()
{
int Y;
int M;
int D;
time_t A;
struct tm *p;

	scanf( "%d/%d/%d", &Y, &M, &D );

    T.tm_year = Y - 1900;
    T.tm_mon = M - 1;
    T.tm_mday = D + 2;

    A = mktime( &T );

    p = localtime( &A );

    Y = p->tm_year + 1900;
    M = p->tm_mon + 1;
    D = p->tm_mday;

	printf( "%d/%02d/%02d\n", Y, M, D );

	return 0;
}