7shi

def rpn(str: String): Int = rpnPrime(str.split(' ').toList, Nil)

def rpnPrime(str: List[String], stack: List[Int]): Int = (str, stack) match {
  case ("+"::t, y::x::zs) => rpnPrime(t, (x + y)   :: zs)
  case ("-"::t, y::x::zs) => rpnPrime(t, (x - y)   :: zs)
  case ("*"::t, y::x::zs) => rpnPrime(t, (x * y)   :: zs)
  case ("/"::t, y::x::zs) => rpnPrime(t, (x / y)   :: zs)
  case ("%"::t, y::x::zs) => rpnPrime(t, (x % y)   :: zs)
  case (  n::t,       zs) => rpnPrime(t, (n.toInt) :: zs)
  case _ => stack.head

7shi

/*

INPUT SAMPLE:

VAR NUMBER = 25
VAR STRING = "ALEX"
VAR ERRO = "THAT's NOT CAUSE AN ERROR :)"
PRINT ERRO
PRINT "ALEXANDRE"
PRINT NUMBER

7shi

#include <cstdio>
#include <vector>
#include <windows.h>

using namespace std;

class Buffer: public vector<unsigned char>
{
public:
	void push_dword(DWORD dw)