#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

string ToBinaryString(int value);
int BinaryToInt(string binary);

int main() {

    for (int i = 0; i < 32; i++) {
       string tmp {ToBinaryString(i)};
       cout  << setw(3) << i 
             << setw(7) << tmp
             << setw(4) << BinaryToInt(tmp) 
             << endl;
    }

    return 0;
}

string ToBinaryString(int value) {
   string binary;
   int digit;

   while (value > 0) {
      digit = value % 2;
      value = value / 2;
     
      binary = static_cast<char>(digit + '0') + binary; 
   }

   if (binary == "") {
      binary = "0";
   }

   return binary;
}

int BinaryToInt(string binary) {
   size_t i;
   int value{0};

   for(i = 0; i < binary.size(); ++i) {
      value = value * 2 + binary[i] - '0';
   }

   return value;
}