View Code of Problem 3924

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main() {
	string s;
	cin >> s;
	for (int i = 0; i < s.size(); ++i) {
		if (s[i] == s[i + 1]) {
			continue;
		}
		cout << s[i];
		
	}
	return 0;
}