program zzn;
var
        i,j,n,f:longint;
        s:array[0..1000000]of longint;
procedure init;
begin
        assign(input,'tickets.in');
        reset(input);
        assign(output,'tickets.out');
        rewrite(output);
        readln(n,f);
        s[0]:=0;
        for i:=1 to n do
         begin
         read(j);
         s[i]:=s[i-1]+j;
         end;
end;
procedure closef;
begin
        close(input);
        close(output);
end;
function sum(x,y:longint):longint;
begin
    exit(s[y]-s[x-1]);
end;
procedure main;
var
        l,r,ss,ans:longint;
        flg:boolean;
begin
        l:=1;r:=n;
        flg:=false;
        ans:=0;
        while not(flg) do
        begin
            if sum(l,r)<=f then
             begin
                flg:=true;
                ans:=r-l+1;
                break;
             end;
            if sum(l+1,r)<sum(l,r-1) then inc(l) else dec(r);
            if l>r then break;
        end;
        writeln(ans);
end;
begin
        init;
        main;
        closef;
end.