#include<iostream>
using namespace std;
int main(){
    int a1,a2,b1,b2,c1,c2,ans=1;
    cin>>a1>>a2>>b1>>b2>>c1>>c2;
        while(1){
            if(ans%a1==a2&&ans%b1==b2&&ans%c1==c2){
                cout<<ans<<'\n';
                break;
        }
        ans++;
}}