Monistus

input/code.cpp: In function 'std::string replaceFirst(std::string)':
input/code.cpp:21:43: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   21 |         if ((word.find(std::to_string(i)) < firstPlace) && (word.find(std::to_string(i)) != std::string::npos) && std::isalpha(word.substr(word.find(std::to_string(i)), 1)[0]) == 0)
      |              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~

#include <iostream>
#include <string>
#include <cmath>
bool hasnum(std::string wrd)
{
    for (char a : wrd)
    {
        if (std::isalpha(a) == 0)
        {
            return true;
        }
    }
    return false;
}

std::string replaceFirst(std::string word)
{
    int firstPlace = (5 * (pow(10, 5))) + 1;
    for (int i = 1; i < 10; i++)
    {
        if ((word.find(std::to_string(i)) < firstPlace) && (word.find(std::to_string(i)) != std::string::npos) && std::isalpha(word.substr(word.find(std::to_string(i)), 1)[0]) == 0)
        {
            firstPlace = int(word.find(std::to_string(i)));
        }
    }
    word = word.replace(firstPlace, 1, word.substr(firstPlace + 1, stoi(word.substr(firstPlace, 1))));
    return word;
}
//98abcdefghijk54lmnopqrstuvw65xyz987ABCDE43FGHI987JKLMN654OPQRSTU765VWXYZ+-
int main()
{
    std::string word = "";
    std::cin >> word;
    while (hasnum(word))
    {
        word = replaceFirst(word);
    }
    std::cout << word;
}

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: TIME LIMIT EXCEEDED

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 10

Group: 2

Verdict: TIME LIMIT EXCEEDED

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