Bitte ein Bit

Question

https://open.kattis.com/problems/bitteeinbitopen.kattis.com

Solution

Idea

Time Complexity: $O(1)$

This is a purely give-away question. Nothing to say. Just print the first character of your input suffices.

Code

https://github.com/mendax1234/Coding-Problems/blob/main/kattis/bitteeinbit/bitteeinbit.c

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

#define MAX_LEN 100

int main()
{
  char line[MAX_LEN];

  if (fgets(line, MAX_LEN, stdin))
  {
    line[strcspn(line, "\n")] = 0;
  }

  putchar(line[0]);
}