Merkkijono

input/code.cpp: In function 'int main()':
input/code.cpp:9:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 1;i < a.length();i++) {
                                 ^

#include <iostream>
#include <string>

int main() {
    std::string a;
    std::cin >> a;

start:
    for (int i = 1;i < a.length();i++) {
        if ( a[i] == a[i-1]) {
            int j = i-1;
            while (true) {
                if (a[j] != a[i-1]){
                    a.erase(a.begin()+(i-1),a.end()-(a.length()-j));
                    i = 1;
                    goto start;
                    }
                j++;}
        }
    }
    std::cout << a;
}    
            

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