/* version 2023-10-04 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int val(int v)
{
  char *_ = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:";
  char *__ = strchr(_, v);
  if (__ == NULL) abort();
  return __-_;
}

int main(void)
{
  int x, y, z;
  int c, d, e, f;
  while (1) {
    x = getchar();
    y = getchar();
    z = getchar();
    if (x == '\n' || x == EOF) break;
    if (y == EOF || y == '\n') abort();
    c = val(x);
    d = val(y);
    if (z == EOF || z == '\n') goto only_two;
    e = val(z);
    f = c + d*45 +e*45*45;
    putchar(f/256);
    putchar(f%256);
    continue;
only_two:
    f = c + d*45;
    putchar(f);
    break;
  }
  fflush(stdout);
  return 0;
}