#include<bits/stdc++.h> using namespace std; int n,a[100005],d[100005],s=0; int main() { cin>>n; cin>>a[1]; d[1]=a[1]; s=d[1]; for(int i=2;i<=n;i++){ a[i]=(379*a[i-1]+131)%997; d[i]=max(d[i-1],a[i]); s=s+d[i]; } cout<<s; }