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input/code.cpp: In function 'int main()':
input/code.cpp:7:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     REP(i, 0, inp.length()) 
                          ^
input/code.cpp:2:41: note: in definition of macro 'REP'
 #define REP(i,a,b) for (int i = a; i <= b; i++)
                                         ^

#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;
    REP(i, 0, inp.length()) 
    {
	//cout << inp[i] << ", " << i << "\n";
	if(inp[i] == inp[i+1])
	{
            int x = i+2;
            while(x > 0)
            {
                if(inp[i] == inp[x]) x++;
             
                else 
		{
                    inp.erase(i, x);
                    x = -1;
                }
            }
	//cout << "reset \n";
        i = -1;
	}
    }
    cout << inp << "\n";
     
}

Test 1

Verdict: TIME LIMIT EXCEEDED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER