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

ll N,V;
ll C[102], S[102];
ll co[20900];
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin>>N>>V;
    for(int i=0;i<N;++i){
        cin>>C[i+1],S[i+1]=S[i]+C[i+1];
    }

    if(V<=N){
        cout<<S[N]<<endl;
        return 0;
    }
    V-=N;

    int x=1;
    for(int i=2;i<=N;++i){
        if(S[i]*x<S[x]*i) x=i;
    }
    for(int i=0;i<=min(20200ll, V);++i){
        co[i]=1ll<<60;
        if((V-i)%x==0) co[i]=(V-i)/x*S[x];
    }

    for(int i=min(20000ll,V);i>=0;--i){
        for(int j=1;j<=N;++j){
            co[i]=min(co[i],co[i+j]+S[j]);
        }
    }

    cout<<co[0]+S[N]<<endl;
    return 0;
}