#include <stdio.h>
#define MAXLINE 1000

int getline (char line[], int maxline);
void copy(char to[], char from[]);

/* print longest input line */
int main () {
  int len;            /* current line length */
  int max;            /* maximum length seen so far */
  char line[MAXLINE];    /* current input line */
  char longest[MAXLINE]; /* longest line saved here */

  max = 0;
  while ((len = getline(line, MAXLINE)) > 0)
    if (len > max) {
      max = len; copy (longest, line);
    }
  if (max > 0) /* there was a line */
    printf("%s", longest);
  return 0;
}

int getline (char s[], int lim) {
  int c, i;
  for (i = 0; i < lim-1 && (c=getchar()) != EOF && c!='\n'; ++i)
    s[i] = c;
  if (c == '\n') { s[i] = c; ++i; }
  s[i] = '\0';
  return i;
}

void copy (char to[], char from[]) {
  int i;
  i = 0;
  while ((to[i] = from[i]) != '\0') ++i;
  return ;
}

/* ****** ****** */

/* end of [longest_line] */