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

#define REP(i,a,b) for(i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)

#define ll long long
#define ull unsigned ll

#define N_MAX 100
#define V_MAX 1000000000
#define C_MAX 1000000000

int N, V, C[1111];

int VV;
ll sum[111];

ll solve(void){
  int i, j, k, opt;
  ll res, tmp;
  static ll dp[11111];

  VV = V - N;
  sum[0] = 0;
  rep(i,N) sum[i+1] = sum[i] + C[i];

  dp[0] = 0;
  REP(i,1,11111) dp[i] = dp[i-1] + sum[1];
  REP(k,2,N+1) REP(i,k,11111) dp[i] = min(dp[i], dp[i-k]+sum[k]);

  opt = 1;
  REP(i,2,N+1){
    if(sum[opt] * i > sum[i] * opt) opt = i;
  }

  res = 0;
  k = max(0, (VV-11111) / opt);
  res += k * sum[opt];
  VV -= k * opt;
  while(VV >= 11111) VV -= opt, res += sum[opt];

  res += dp[VV];
  res += sum[N];
  return res;
}

int main(){
  int i, j, k;
  ll res;

  scanf("%d%d",&N,&V);
  rep(i,N) scanf("%d",C+i);

  assert(1 <= N && N <= N_MAX);
  assert(1 <= V && V <= V_MAX);
  rep(i,N) assert(1 <= C[i] && C[i] <= C_MAX);
  
  res = solve();
  printf("%lld\n",res);

  return 0;
}