#include<......>
#define int long long
#define fo(i,a,b) for(int i=a;i<=b;i++)
using namespace std;
int n,ans;
int a[100001],f[100001];
main(){
	cin>>n;
	cin>>a[1];
	fo(i,2,n){
		a[i]=(379*a[i-1]+131)%997;
	}
	fo(i,1,n){
		f[i]=max(a[i],f[i-1]);
		ans+=f[i];
	}
	cout<<ans;
	return 0;
}