171127_1476_날짜 계산

	//https://www.acmicpc.net/problem/1476 #include <iostream>
	using namespace std;
	int main()
	{
	int E, S, M;
	cin >> E >> S >> M;
	E%=15;
	S%=28;
	M%=19;
	for(int i=1; ;i++)
	if((i%15)==E && (i%28)==S && (i%19)==M)
	{
	cout << i ;
	break;
	}
	}