Monistus

input/code.cpp: In function 'std::string doCycle(std::string)':
input/code.cpp:17:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for (int index = 0; index < input.size(); index++)
      |                         ~~~~~~^~~~~~~~~~~~~~
input/code.cpp:35:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |             for (int k = 1; (k + index) < input.size(); k++) {
      |                             ~~~~~~~~~~~~^~~~~~~~~~~~~~

#include <iostream>
#include <string>
using namespace std;

string inp;
char bString[1000]; 
char nString[9];
char rString[1000];
int indexSize;
string gen;

string build(string start, string insert, string end) {
    return start + insert + end;
}

string doCycle(string input) {
    for (int index = 0; index < input.size(); index++) 
    {
        if (isdigit(input[index])) {

            for (int x = 0; x < index; x++) {
                bString[x] = input[x];
            }

            indexSize = input[index] - 48;
            cout << "number" << indexSize << "found at " << index;


            for (int j = 1; j <= indexSize; j++)
            {
                nString[j - 1] = input[index + j]; //nstring = we insert into middle

            }

            for (int k = 1; (k + index) < input.size(); k++) {
                rString[k - 1] = input[index + k]; //rstring we add to the end
            }
            cout << endl << " Start of string: " << bString << endl;
            cout << endl << " Insert into middle: " << nString << endl;
            cout << endl << " Insert into end: " << rString << endl;
            return build(bString, nString, rString);
        }
        
    }
    return input;
}
int main() {
    getline(cin, inp);
    cout << inp;
    cout << "Input size: " << inp.size() << endl;
    gen = doCycle(inp);
    for (int i = 0; i < 100; i++) {
         gen = doCycle(gen);  
    }
    cout << "Vastaus: " << gen;
    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: RUNTIME ERROR

Test 9

Group: 2

Verdict: RUNTIME ERROR

malloc(): corrupted top size

Test 10

Group: 2

Verdict: RUNTIME ERROR

malloc(): corrupted top size

Test 11

Group: 2

Verdict: RUNTIME ERROR

Test 12

Group: 2

Verdict: RUNTIME ERROR

Test 13

Group: 2

Verdict: RUNTIME ERROR

Test 14

Group: 2

Verdict: RUNTIME ERROR