View Code of Problem 3924

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
int main(){
    string a,b;
    cin>>a;
    for(int i=0;i<a.length();i++){
        if(i==a.length()-1||a[i]!=a[i+1]){
            b.push_back(a[i]);
        }
    }
    cout<<b<<endl;
    
}