Merkkijono

input/code.cpp: In function 'int main()':
input/code.cpp:8:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(i < inp.length()) 
                          ^

#include <bits/stdc++.h>
#define REP(i,a,b) for (int i = a; i <= b; i++)
using namespace std;
int main() {
    string inp;
    cin >> inp;
    int i = 0;
    while(i < inp.length()) 
    {
    //cout << inp[i] << ", " << inp[i+1] << "\n";
    if(inp[i] == inp[i+1])
    {
            int x = i+2;
            while(x > 0)
            {
                if(inp[i] == inp[x]) x++;
             
                else 
        {
                    //cout << i << "-" << x << "\n";
                    inp.erase(i, x-i);
                    x = -1;
                }
            }
    //cout << "reset \n";
        i = 0;
    }
    else i++;
    }
    cout << inp << "\n";
     
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED