View Code of Problem 3924

#include<iostream>
#include<vector>
#include<algorithm>
#include<iomanip>
#include<string>
#include<cmath>
#include<unordered_map>
#include<stack>

using namespace std;

int main()
{
	string str;
	while (getline(cin, str)) {

		cout << str[0];
		for (int i = 1; i < str.size(); i++) {

			if (str[i] == str[i - 1])
				continue;

			cout << str[i];
		}

		cout << endl;
	}
}