#include <stdio.h>

int main()
{
	char string1[80];
	char string2[80];

	gets(string1);

	int lastWhite = 0;

	for(i = 0; i < strlen(string1); i++)
	{
		if(lastWhite == 0 && string[i] == ' ')
		{
			string2[c] = string1[i];
			lastWhite = 1;
			c++;
		}
		else if(string[i] == ' ')
		{
			string2[c] = string1[i];
			lastWhite = 1;
			c++;
		}

		i++;
	}
	printf("%c\n", string2);
}