#include "stdafx.h"
#include <iostream>
#include <fstream>
using namespace std;



int RotateLeft(int n, int k)
{
    for (int i = 0; i < k; i++) {
        if (n & 0x800000) {
            n = (n << 1) + 1;
        } else {
            n = (n << 1);
        }
    }
    return n;
}

int RotateRight(int n, int k)
{
    for (int i = 0; i < k; i++) {
        if (n & 1) {
            n = (n >> 1) + 0x800000;
        } else {
            n = (n >> 1);
        }
    }
    return n;
}
int _tmain(int argc, _TCHAR* argv[])
{
    short int k; char n;
    cin >> k;
    ifstream fin("input", ios::binary);
    ofstream fout("encrypted", ios::binary);
    fin.get(n);
    while (!fin.eof()) {
        n = RotateLeft(n, k);
        fout.put(n);
        fin.get(n);
    }
    fin.close(); fout.close();
    ifstream fin1("encrypted", ios::binary);
    ofstream fout1("decrypted", ios::binary);
    fin1.get(n);
    while (!fin1.eof()) {
        n = RotateRight(n, k);
        fout1.put(n);
        fin1.get(n);
    }
    fin1.close(); fout1.close();
}