#include <iostream>
using namespace std;
int main() {
int N;
cin>>N;
int b1,b2,b3,b4,ed,er;
ed=b4-b3;
er=b4%b3;
cin>>b1,b2,b3,b4;
if(b3-b2==ed){
cout<<b1<<b2<<b3<<b4<<b4+1;
}else{
cout<<b1<<b2<<b3<<b4<<b4*er;
}
}
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