Monistus

input/code.cpp: In function 'std::string replaceFirst(std::string)':
input/code.cpp:15:42: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   15 |         if((word.find(std::to_string(i)) < firstPlace) && (word.find(std::to_string(i)) != std::string::npos))
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
input/code.cpp: In function 'int main()':
input/code.cpp:28:10: warning: unused variable 'cont' [-Wunused-variable]
   28 |     bool cont = true;
      |          ^~~~

#include <iostream>
#include <algorithm>
#include <string>
#include <cctype>
#include <cstring>
bool has_any_digits(const std::string& s)
{
    return std::any_of(s.begin(), s.end(), ::isdigit);
}
std::string replaceFirst(std::string word)
{
    int firstPlace = (5 * (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))
        {
            firstPlace = int(word.find(std::to_string(i)));
        }
    }
    word = word.replace(firstPlace, 1, word.substr(firstPlace + 1, stoi(word.substr(firstPlace, 1))));
    return word;
}

int main()
{
    std::string word = "";
    std::cin >> word;
    bool cont = true;
    while (has_any_digits(word))
    {
        word = replaceFirst(word);
    }
    std::cout << word;
}

Test 1

Group: 1, 2

Verdict: RUNTIME ERROR

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi

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: RUNTIME ERROR

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi

Test 9

Group: 2

Verdict: RUNTIME ERROR

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi

Test 10

Group: 2

Verdict: RUNTIME ERROR

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi

Test 11

Group: 2

Verdict: RUNTIME ERROR

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi

Test 12

Group: 2

Verdict: RUNTIME ERROR

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi

Test 13

Group: 2

Verdict: RUNTIME ERROR

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi

Test 14

Group: 2

Verdict: RUNTIME ERROR

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi