Monistus

input/code.cpp: In function 'int main()':
input/code.cpp:17:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for (int i = 0; i < s.size(); i++)
      |                     ~~^~~~~~~~~~
input/code.cpp:15:10: warning: unused variable 'r' [-Wunused-variable]
   15 |     bool r = true;
      |          ^

#include <iostream>
#include <string>
#include <vector>

using namespace std;

string s;
vector<pair<int, int>> v;

int main()
{
    s.reserve(100000);
    v.reserve(100000);
    cin >> s;
    bool r = true;

    for (int i = 0; i < s.size(); i++)
    {
        if (isdigit(s[i]))
        {
            int sz = s[i] - '0';
            v.emplace_back(i, sz);
        }
    }

    for (int i = v.size() - 1; i > -1; i--)
    {
        auto [p1, sz1] = v[i];

        char b[100000];
        s.copy(b, sz1, p1 + 1);
        s.erase(p1, 1);
        s.insert(p1, b, 0, sz1);

        v.pop_back();

        if (i != 0)
        {
            auto& [p2, sz2] = v[i - 1];
            if (p2 + sz2 > p1)
            {
                sz2 += sz1 - 1;
            }
            else if (p2 + sz2 == p1)
            {
                char b2[100000];
                s.copy(b2, sz1, p2  + 1);
                s.copy(b, sz2, p2  + 1);
                s.erase(p2, 1);
                s.insert(p2, b, 0, sz2);
                s.replace(p1 - sz1, sz1, b2, sz1);

                i--;
                v.pop_back();
            }
        }

    }

   cout << s;

   return 0;
}

Test 1

Group: 1, 2

Verdict: WRONG ANSWER

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: WRONG ANSWER

Test 4

Group: 1, 2

Verdict: WRONG ANSWER

Test 5

Group: 1, 2

Verdict: WRONG ANSWER

Test 6

Group: 1, 2

Verdict: WRONG ANSWER

Test 7

Group: 1, 2

Verdict: WRONG ANSWER

Test 8

Group: 2

Verdict: WRONG ANSWER

Test 9

Group: 2

Verdict: WRONG ANSWER

Test 10

Group: 2

Verdict: WRONG ANSWER

Test 11

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 2

Verdict: TIME LIMIT EXCEEDED