Program HOC24;
var a,b,c,d,e: integer;
function tich(x,y,z,t,k: integer): int64;
var kq: integer;
begin
kq:=x;
kq:=kq*y*z*t*k;
tich:=kq;
end;
begin
write('Nhap 5 so : '); readln(a,b,c,d,e);
write('Tich 5 so nguyen do la : ',tich(a,b,c,d,e));
readln
end.