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

int main(){

	ios::sync_with_stdio(false);
	cin.tie(0);
	ll n,x;
	cin>>n>>x;
	ll sum=0;
	ll nowmax=0;
	ll cur=x;
	
	for(ll i=1;i<=n;i++){

		if(cur>nowmax) nowmax=cur;
		sum+=nowmax;
		cur=(379*cur+131)%997;
	}
	cout<<sum;
	return 0;
}