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


int main() {
  FILE *input_file = fopen("./input.txt", "r");;
  
  fseek(input_file, 0, SEEK_END);
  int if_size = ftell(input_file);
  fseek(input_file, 0, SEEK_SET);
  
  char input[if_size];
  char c;
  
  do {
    c = fgetc(input_file);
    strncat(input, c, 1);
  } while(c != (char)-1);
  
  printf("%s", input);
  
  return 0;
}