View Code of Problem 3924

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