/*                                                                                 `
                                                                                ``  `
                                                                          . `   .g,`
                   Welcome To My Coding Space!                          .MMe  `(F(#~ `.J,
                                                                       `.M/7b. dD.N; (#=#:
                                                                     ``  db (m.#` Wl(@ jF    `
                                            ``    `  `          `   ..+kMMN;_(Y> `(TD  d$..gHN_
                                     `   ``   ......   `  `  ` `..gMB61+1+dK `- `.    .TM@^(d%
                               `` `` ..JggHHMMHHYYTHMMMNmgJ.. .kB6z?1+z1+<dD ..` .  ``.` `.V'
                              ``..+HMBYC1?1+???=?====????1vTHMNe+1+dMB"BMMM% .`je. `.. ..+@`
                            `..gM9C1+?==??==?==?=?===??=??=?1?zTMNeJTHg..``...`.,S._`.` d$  `
                      ` ` .(kBY1+==????=?=??=?=??=???=?=?=?=????+zTMm+?TMm..   ` d[ .``.M}
                       `.(M9++?=????==???=?=??=?=?=?=?=?=?=?===?==1+7Mmx?MN,``..._^`.. (F      `
     ` ` ` ` `  `      (M8++z11==?==??==??=?==?=?=?==??=??=??==??==?=+7Mm<dNg, ` .`.. (#!   `
   ` `    ..(JgH@MMMMMMB1+=??=??=?????==11??1=1?1?=1+=11?1==?=1=??=??11+WNJdMt .``.` J#! `
      .(HHYYC?1+??z>+H8+=??=?=?=???=?=?=z1&z1?==?1<dNs111?==1ux?==?=?==1zdNcW%  ..`. J#~`
     `.WNx<?1?==1=zdMD+=?==?===?=?==?===<dNNx1z??==+WMN+g&&&xdMk1??=1===???MN}`.`.`. J#` `
  `     ?MNc1=1?z?jH8+==?=?==??=jQ21=?=?(M$?WNx<1=zudMMMszOCvTHMmx+?1?z+1?zd#:..`.`. J@       `
     `` .M81==?==>dM<??===?=?=?+dNy+?=?jM@ ` ?WNe+zO>dNcHmJ1+1JMMR1?z??Ne1<d#~.`..`. dF
       (M3+1+?==?jMD+=?z1&&?v1+jMMb+=?1d#!`..``?HNx+?+HR ?Mm+1<dMMp?==<dNc<d#_.`..`.`dF  `
      ,MHmax111=<dNC?=?=(M#ugH9M#W#6+?(M'`.`.... ?WNe<dM: .TNm<dN?Nm<=zzMR+M@` .``.. dF `
   ` ``  _CM$+??1d#<==?=>dM9+?(MF(MI+jMf .`.``.`.. (TNaHr`.`.TNmN:(MR+?zMK(M$` `.`.``dF        `
          J#<=1<jME+1?=1d9Mn1<jN! qN(d@_.`..`.`.`.```-7Y5.....,TB! (MmJ+MH(M: ...`.`.d$`
     `   .M$iggWWMR+1?<dDjMNxjMB  .NgN``..``.`.``....`.d#Y"""YWNg.  .WNxW#J@ .`.`.``.H: `
         _Y""!  .M$jm+?1zd#TNzM}.. ?M% .`..`.`..``.`..  .+NMNg,.?Mm._ ?NMNM$ ..`..``.#    `
                .HPj#z=?<d#_WM#:.JgHH6 .  `.`.`..``.`.`jMMF`.MMN..TN,  ?@jM}`..`.`.`JD   `
           ` `   dbjMI?=+MF`.7XME^_.--,. ..`.``.`..`.`.M#XNgjNdMR. ?N-.  (#~``.``.. d%
              `  d#<WR1z(Mt` (#' (MMBTHNe.`..`..`.`.` .M#UMMMM#W#_. zN.  dF`.`...`..H}  `
                 ?MO(N+?jM:`.M!`.M9N+.-MMR `..`..`.`.`_?MmTMMMwM#~...H: .H}`..`..` (#`
          `  `  ` WNJMR<dN_ JB  dNwMMMMNdM[`.`.`.`.`..  ,TNNggMB! .` ~ `(M `.`.``. dF
                 `.MdMNoW@ `JP `(MKdMMNMdM}`.`..`.`.`.... .??!`.`.`..`..dD .`....`.W'
                   ?MMMMMP `(R`..?MmyUWQMB ..`..`.`.`..`..`..`.`.`_`-.gM#!.`.``.``.@
             `   `` _7NTMN.`.H/`. ,TMMB"! .``.`.`..`.``.``.`..`.`. .,NIdb` .`..`  j$
          `           Wm.M;`._!..`.`...`_`...``..   ...(+ga,`.....``(NjMr`..`... .#:
                      .MpdN_.`. ``.``.`..`..(-JggkWY9YC<>;?Wp .``.` J#>dN, ..``.`dF`
                      `_UmMn .`..`..`..`. JMYT1<;;;>>>>>;>>?Wo ..`. dK1=dN,`..``.MN+
                        .dMMe .`.``.`.`.` d#<;>>>>;>>>>;>>>>(N,`.. -MK1llvWm.   JM?Mp. ` `
                     ` .M9+?Me`.`..`.`.`` JN(>;>>;>>;>>>;>>><db` (kH5lllllzXMm.-NNszWm ` `
                `     (#1+???Hm, ..`..`..`(N:>>>>>;>>>>>;>>><d@_.JNZIlllllllzvTWB6zlJMp      `
                ` `` j@1+==?1zvHm.`...`....Hc<>>>>>>>>>>>>><(W$(M8TIllllllllllllllllzvMo ` `   `
                    (#1?==1?===z?TNa,.` `` (Ne<<>>>>><;><;jgMMY1HK1lllllllllllllllllllJMp `
                   .Ne&g&x1=?=?==?1zTHNmJ-...dNgJ++++&ggMH9=~ .M9Izlllllllllllllllllll1WF    `
                `   _???MK<=??=??1z?(MM@!d#M#Y""""=<!!~```  .d8Illllllll=lll=lllllllzudY `     `
                `       dH<?+uev?=1uMM^  d@vN&.`...`.`.`.-JH91zzl=llllllllllll=lzllzd#'  `  `
                        ,MNMBHNIvjdB(D ` d#=zTNm.....JgHM9Izlllludk=zl=ll=llllllvug#^
                     ` `    `.MmgM=+M$ ` d#zzO1vUUUU9TI=lllzzO1dKT#zOlllll=llll=dM=
                         `   `(Y^ JBdr ` dNmxzIlllllllllllz1ug#= .My1llllllllllzdD `
                           `     j@1dR ``(#~THaxl=lzzlzzzugW"!` ``,Nzlzz=lllllzd#:  `
                            ` ` .#z=d# ``(#_` .7THWQkWHB"^ ` `   ` ?NsIzzlll=ljM\
                       `   ``  (M6zldN_` .M| `    ``    `           .WezllzllzH% `` `
                     `    `  .+#Czl=dM;`  dR                    `     4m+zll1dD
                        `  `.d@1llzvdMb   ,#   `                   `   ?Wmxzdf                     */
#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
//---------------------------------------------------------------------------------------------------



typedef long long ll;
#define INF 1LL<<60
ll N, V; ll C[101];
//---------------------------------------------------------------------------------------------------
ll L[101], sum[101];
void reduction() {
    sum[0] = 0;
    rep(i, 0, N) sum[i + 1] = sum[i] + C[i];

    L[0] = 1;
    rep(i, 1, N) {
        L[i] = L[i - 1] + 1;
        C[i] += C[i - 1];
    }
}
//---------------------------------------------------------------------------------------------------
ll dp[1010101];
void makedp(int up) {
    dp[0] = 0;
    rep(i, 1, up) dp[i] = dp[i - 1] + sum[1];
    rep(i, 1, up) rep(j, 2, N + 1) {
        if(0 <= i - j) dp[i] = min(dp[i], dp[i - j] + sum[j]);
    }
}
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> N >> V;
    rep(i, 0, N) cin >> C[i];

    ll sm = 0;
    rep(i, 0, N) sm += C[i];

    if (V <= N) {
        cout << sm << endl;
        return;
    }

    ll ans = sm;
    V -= N;

    reduction();

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

    makedp(N * N * N);

    /*ll rest = V % (L[opt] * L[opt]);
    ans += 1LL * (V - rest) / L[opt] * C[opt];
    ans += dp[rest];*/

    ans = (V / opt) * sum[opt] + dp[V % opt] + sm;

    cout << ans << endl;
}