#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;
void _vhod(char* s)
{
	int word = 0;
	for (int i = 0; i < 255; i++)
	{
		if (s[i] == '\0' && word == 0) break;
		if (s[i] != ' ' && s[i] != '\0') word++;
		else
		{
			for (int j = i - word; j < i - 1; j++)
			{
				if (s[j] == s[i - 1])
				{
					for (int k = j; k < strlen(s); k++) s[k] = s[k + 1];
					word--;
					i--;
					j--;
				}
			}
			word = 0;
		}
	}
}
int main()
{
	setlocale(LC_ALL, "rus");
	char s[255] = { 0 };
	cout << "Введите предложение: ";
	gets_s(s);
	_vhod(s);
	puts(s);
	system("pause");
}