#include<bits/stdc++.h>
using namespace std;
int ans;
int main(){
	int n,m;
	cin>>n>>m;
	for(int i=1;i<=n;i++){
		ans=i;
		for(int j=1;j<=n;j++){
			if(ans%(n-1)!=0&&j!=1){
				j=1;
				i++;
				ans=i;
			}
			if(j==1) ans=ans*n+m;
			if(j!=1) ans=ans*n/(n-1)+m;
			cout<<j<<"jjjj"<<ans<<"ans"<<endl;
		}	 
		cout<<ans<<endl;
		break;
	}
	return 0; 
}