Monistus

input/code.cpp: In function 'int main()':
input/code.cpp:54:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for (int i = 0; i < str.size(); i++)
      |                     ~~^~~~~~~~~~~~

#include <iostream>
#include <sstream>
#include <deque>

using namespace std;
deque<char> word;
void duplicate(string str)
{
    while (!word.empty())
    {
        char firstChar = word.front();
        // cout << endl;
        // cout << "char is " << firstChar << endl;

        if (isdigit(firstChar))
        {
            // cout << "digit detected" << endl;
            word.pop_front();
            deque<char> temp;
            deque<char> temp2;
            for (int i = 0; i < firstChar - 48; i++)
            {
                // cout << "pushing " << word.front() << "in temp" << endl;
                temp.push_front(word.front());
                temp2.push_front(word.front());
                word.pop_front();
            }
            while (!temp.empty())
            {
                // cout << "pushing " << temp.front() << "in word" << endl;
                word.push_front(temp.front());
                temp.pop_front();
            }
            while (!temp2.empty())
            {
                // cout << "pushing " << temp2.front() << "in word" << endl;
                word.push_front(temp2.front());
                temp2.pop_front();
            }
        }
        else
        {
            cout << word.front();
            word.pop_front();
        }
    }
}

int main()
{

    string str;
    cin >> str;
    for (int i = 0; i < str.size(); i++)
    {
        word.push_back(str[i]);
    }
    duplicate(str);
    // while (!word.empty())
    // {
    //     cout << word.front();
    //     word.pop_front();
    // }

    return 0;
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

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: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 2

Verdict: ACCEPTED

Test 12

Group: 2

Verdict: ACCEPTED

Test 13

Group: 2

Verdict: ACCEPTED

Test 14

Group: 2

Verdict: ACCEPTED