Monistus

#include <bits/stdc++.h>
#include <unordered_set>
#include <iostream>

using namespace std;
typedef long long ll;
typedef long unsigned int ui;

string perform_operations(string s) {
    string result;
    ui i = 1;
    while (i < s.length()) {
        char c = s[i];
        if (isdigit(c)) {
            ui d = c - '0';
            ui j = i + 1;
            while (j < s.length() && isdigit(s[j])) {
                j++;
            }
            ui length = j - i;
            result += s.substr(i + length, d * length);
            i = j;
        }
        else {
            result += c;
            i++;
        }
    }
    return result;
}

int main() {
    string input_string;
    cin >> input_string;
    string output_string = perform_operations(input_string);
    cout << output_string << 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: WRONG ANSWER

Test 12

Group: 2

Verdict: WRONG ANSWER

Test 13

Group: 2

Verdict: WRONG ANSWER

Test 14

Group: 2

Verdict: WRONG ANSWER