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

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