// yukicoder: No.721 Die tertia (ディエ・テルツィア)
// 2019.4.21 bal4u

#include <stdio.h>
#include <ctype.h>

#define gc() getchar()
int in()    // 非負整数の入力
{
	int n = 0, c = gc();
	do n = 10 * n + (c & 0xf), c = gc(); while (isdigit(c));
	return n;
}

int days[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};

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

int main()
{
	int Y, M, D;

	Y = in(), M = in(), D = in();
	days[2] += leapYear(Y);
	D += 2;
	if (D > days[M]) {
		D -= days[M];
		if (++M > 12) M = 1, Y++;
	}
	printf("%d/%02d/%02d\n", Y, M, D);
	return 0;
}