View Code of Problem 3924

#include<stdio.h>
#include<string>
#include<iostream>
using namespace std;
int main()
{
	string str;
	cin>>str;
	for(int i=0;i<str.size();i++)
	{
		while(str[i]==str[i+1])
		{
			i++;
		}
		printf("%c",str[i]);
	}
	return 0;
 }