#include <string.h>

#include <cstdio>
#include <iostream>
#include <string>
using namespace std;
// convert a .pbm raw file to our custom .lpbm format

int main(int argc, char *argv[]) {
  unsigned char c;
  const int LEN = 256;
  char s[LEN];
  cin.getline(s, LEN);
  if (strncmp(s, "P4", 2)) {
    cerr << "input file is not .pbm (P4)" << endl;
    return -1;
  }
  cin.getline(s, LEN);
  while (s[0] == '#' || s[0] == ' ')
    cin.getline(s, LEN);
  unsigned int w = 0, h = 0;
  if (std::sscanf(s, "%d %d", &w, &h) != 2) {
    cerr << "height and width not found" << endl;
    return -1;
  }
  if (w != 160 || h != 43) {
    cerr << "incorrect width / height, mandated: 160x43, found: " << w << "x"
         << h << endl;
    return -1;
  }
  cin >> noskipws;
  int i = 0, row = -1;
  unsigned char buf[160 * 48];
  memset(buf, 0, 160 * 43);
  while (cin >> c) {
    if (i % 20 == 0) row++;
    if (row == 8) row = 0;
    buf[7 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 0) & 0x01) << row;
    buf[6 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 1) & 0x01) << row;
    buf[5 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 2) & 0x01) << row;
    buf[4 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 3) & 0x01) << row;
    buf[3 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 4) & 0x01) << row;
    buf[2 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 5) & 0x01) << row;
    buf[1 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 6) & 0x01) << row;
    buf[0 + (i % 20) * 8 + i / 160 * 160] |= ((c >> 7) & 0x01) << row;
    i++;
  }
  if (i != 160 * 43 / 8) {
    cerr << "wrong number of bytes, expected " << 160 * 43 / 8 << ", got " << i
         << endl;
  }
  for (int i = 0; i < 160 * 48 / 8; i++) {
    cout << hex << (char)buf[i];
  }
}