#include <stdio.h>

int main(void);

int main(void) {
  int i;
  int j = 1;
  unsigned int k = 1;

  for ( i = 1 ; i < 40 ; i++) {
    j = j * 2;
    k = k * 2;
    printf("2^%2d: j=%12d, k=%12u\n", i, j, k);
  }
  return 0;
}