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

int main() { int a,b,c,res=11; cin>>a>>b>>c; while(res%3!=a||res%5!=b||res%7!=c) { res++; if(res>=1000000) { break; } } if(res>=1000000) { cout<<"no answer"; } else { cout<<res; } return 0; }