Monistus

input/code.cpp: In function 'int main()':
input/code.cpp:23:10: warning: variable 'alku' set but not used [-Wunused-but-set-variable]
   23 |     auto alku = data.begin();
      |          ^~~~

#include <bits/stdc++.h>
#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    ios_base::sync_with_stdio();
    cin.tie(nullptr);

    string str;
    cin >> str;
    int pituus = str.size();
    vector<char> data;

    data.reserve(10000);
    for (int i = 0; i < pituus; i++)
    {
        data.push_back(str[i]);
    }

    int i;
    auto alku = data.begin();
    for (i = 0; i < pituus; i++)
    {
        char merkki = data[i];
        if (merkki == 0)
            break;

        if (merkki < 0x40)
        {
            int ero = merkki - '0';
            data[i] = data[i + 1];
            for (int j = 1; j < ero; j++)
            {
                data.insert(data.begin() + i + j, data[i + 2 * j]);
            }
            pituus += ero;
        }
    }

    for (char c : data)
    {
        cout << c;
    }
}

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: ACCEPTED

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 1, 2

Verdict: ACCEPTED

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: ACCEPTED

Test 12

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 2

Verdict: WRONG ANSWER