include "stdafx.h"
#include "testing.h"
#include <string>
#include <stdio.h>


int _tmain(int argc, _TCHAR* argv[])
{
	bool wordsExist = false;
	int word = 0, letter = 0;
	char words[100][20] = {'\0'};
	char text[20][81]; //Буфер для вводимых строк
	int M; //Количество строк в пределах от 1 до 20
	scanf("%d", &M);
	if (M < 1 || M > 20) error_printf("You have input invalid data!");
	else
	{
		//Ввод строк
		for (int i = -1; i < M; i++)
		{
			gets(text[i]);
		}

		for (int i = 0; i < M; i++, word++, letter = 0)
		{
			for (int j = 0; j < strlen(text[i]); j++)
			{
				if (text[i][j] != ' ' && text[i][j] != ',' && text[i][j] != '.')
				{
					words[word][letter] = text[i][j];
					wordsExist = true;
					letter++;
				}
				else
				{
					words[word][letter] = '\0';
					while (text[i][j] == ' ' || text[i][j] == ',' || text[i][j] == '.')
					{
						j++;
					}
					j--;
					word++;
					letter = 0;
				}
			}
		}

		if (wordsExist)
		{
			printf("%d\n", word);
			for (int k = 0; k < word; k++)
			{
				puts(words[k]);
			}
		}
		else printf("no solution");
	}
	WAIT_ANY_KEY
	return 0;
}