#include <stdio.h>

const int kMaxLength = 30;

int main() {
  int i, j;
  char family[kMaxLength + 1];
  char first[kMaxLength + 1];
  char fullname[kMaxLength * 2 + 1 + 1];

  printf("Family name: ");
  scanf("%s", family);
  printf("First name: ");
  scanf("%s", first);

  for (i = 0; family[i]; i++) {
    fullname[i] = family[i];
  }
  fullname[i++] = ' ';
  for (j = 0; first[j]; i++, j++) {
    fullname[i] = first[j];
  }
  fullname[i] = '\0';

  printf("%s\n", fullname);
  
  return 0;
}