#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
int main(void) {
	size_t llen, nbytes;
	llen = nbytes = 0;
	ssize_t len;
	char *line, *longest_line;
	line = longest_line = NULL;
	while((len = getline(&line,&nbytes,stdin) - 1) > 0) {
		if(len <= llen)
			continue;
		line[len] = '\0';
		llen = len;
		free(longest_line);
		longest_line = strdup(line);
	}
	free(line);
	if(longest_line)
		printf("len: %zu %s\n",llen,longest_line);
	free(longest_line);
	return 0;
}
 

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