#include <unistd.h>
#include <stdio.h>
#include <errno.h>

#define BUFFER_SIZE 4096

int main() {
  // Use block I/O
  char buff[BUFFER_SIZE];
  int firstLine = 1;
  size_t numRead;
  while((numRead = read(STDIN_FILENO, buff, BUFFER_SIZE))!=0) {
    if(numRead==-1) {
      perror("read");
      return 1;
    }
    size_t writePos = 0;
    // Skip first line
    if(firstLine) {
      while(writePos<numRead) {
        if(buff[writePos++]=='\n') {
          firstLine = 0;
          break;
        }
      }
    }
    while(writePos<numRead) {
      size_t numWritten = write(STDOUT_FILENO, buff+writePos, numRead-writePos);
      if(numWritten==-1) {
        perror("write");
        return 1;
      }
      writePos += numWritten;
    }
  }
  return 0;
}