#include <stdio.h>
#include <stdlib.h>

char *readline() {
    int max_size = 10;

    int size;
    char c;
    char *line;

    size = 0;
    line = malloc(sizeof(*line) * (max_size + 1));
    if (!line) {
        return NULL;
    }

    for (;;) {
        if (size == max_size) {
            max_size *= 2;
            line = realloc(line, sizeof(*line) * (max_size + 1));

            if (!line) {
                return NULL;
            }
        }

        c = getchar();
        if (c == EOF) {
            return EOF;
        }

        if (c == '\n') {
            break;
        }

        line[size++] = c;
    }
    line[size] = '\0';

    return line;
}

char **readlines(int *lines_count) {
    char **lines = malloc(sizeof(*lines) * 10);

    int size;
    char *line;

    size = 0;
    while ((line = readline()) != EOF) {
        lines[size++] = line;
    }

    *lines_count = size;
    return lines;
}

void printline(char *line) {
    char c;
    while ((c = *(line++)) != '\0') {
        putchar(c);
    }

    putchar('\n');
}

void printlines(char **lines, int lines_count) {
    for (int i = 0; i < lines_count; i++) {
        printline(lines[i]);
    }
}

int main() {
    int lines_count;
    char **lines;

    lines = readlines(&lines_count);
    printlines(lines, lines_count);

    free(lines);

    return 0;
}