#include <stdio.h>
#define MAXLINE 1000

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

int main()
	{
	int len, max;
	char line[MAXLINE], longest[MAXLINE];

	max = 0;
	while ((len = getlin(line,MAXLINE)) > 0)
		if (len > max)
			{
			max = len;
			copy(longest, line);
			}
	if (max > 0)
		printf ("%s", longest);
	return 0;
	}

int getlin(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;
	}