#include <stdint.h>
#include <inttypes.h>
#include <stdlib.h>
#include <stdio.h>

uint32_t var=1;

void
foo() {
  var *= 2;
  printf("%"PRIu32"\n", var);
}

int
main() {
  uint8_t c, v=0, q=0;

  while (!q) {
    c = getchar();
    switch (c) {
    case 'a':
      v++;
      break;
    case 'f':
      foo();
      break;
    case 'q':
      q = 1;
    }
  }
  return 0;
}