C++ :

#include<bits/stdc++.h>
using namespace std;
int a,b,c;
int main()
{
//	freopen("687.in","r",stdin);
//	freopen("687.out","w",stdout);	
	cin>>a>>b>>c;
	for(int i=1;;i++)
		if(i%2==a && i%3==b && i%5==c) {cout<<i;break;}
    return 0;
}