Monistus

#include <iostream>
#include <string>

int main() {
    std::string input;
    std::cin >> input;
    std::string::size_type i = 0;

    while (i < input.length()) {
        if (isdigit(input[i])) {
            int numDigits = input[i] - '0';
            input.erase(i, 1);
            std::string replacement = input.substr(i, numDigits);
            input.erase(i, numDigits);
            input.insert(i, replacement);
        } else {
            i++;
        }
    }

    std::cout << input << std::endl;

    return 0;
}

Test 1

Group: 1, 2

Verdict: WRONG ANSWER

Test 2

Group: 1, 2

Verdict: WRONG ANSWER

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