#include <cstdlib>
#include <time.h>
#include <iostream>
#include <vector>
#include <list>
#include <stack>
using namespace std;

int main(int argc, char *argv[])
{
     stack<int> w;

    
    w.push(1);
    switch (w[0]) { 
            case 0: case 1: case 2: 
            case 3: case 4: case 5: 
            case 6: case 7: case 8: case 9:  /* liczba */ 
                push(atof(w)); 
                break; }
getchar();
}