uses crt;
var n,k,i,d:longint; a:array[1..1000000]of longint; f:text;
begin
clrscr;
write('n,k=');readln(n,k);
for i:=1 to n do
begin
repeat
write('a[',i,']=');readln(a[i]);
until abs(a[i])<301;
if a[i]=k then inc(d,a[i]);
end;
assign(f,'output.pas');rewrite(f);
writeln(f,d);
close(f);
readln
end.