Monistus

input/code.cpp: In function 'std::string sievenna(std::string)':
input/code.cpp:11:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for(int i = 0; i < s.size(); i++){
      |                    ~~^~~~~~~~~~
input/code.cpp:16:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |         if(isdigit(c) && i < s.size()-x){
      |                          ~~^~~~~~~~~~~~
input/code.cpp: In function 'std::string haku(std::string)':
input/code.cpp:34:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for(int i = 0; i < s.size(); i++){
      |                    ~~^~~~~~~~~~
input/code.cpp:39:28: warning: comp...

#include<bits/stdc++.h>
using namespace std;
using ll = long long;



string sievenna(string s){

    string u = "";

    for(int i = 0; i < s.size(); i++){

        char c = s[i];
        int x = c - '0';

        if(isdigit(c) && i < s.size()-x){
            string m = s.substr(i + 1, x);
            m = sievenna(m);
            s.insert(i + 1, m);
        }
        else u += c;

    }

    return u;
    
}


string haku(string s){
 
    string u = "";
 
    for(int i = 0; i < s.size(); i++){
 
        char c = s[i];
        int x = c - '0';
         
        if(isdigit(c) && i < s.size()-x){
            s.insert(i + 1, haku(s.substr(i + 1, x)));
        }
        else u += c;
        
    }
 
    return u;
 
}



int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    
    string s;
    cin >> s;

    cout << sievenna(s);

    //cout << (sievenna(s) == haku(s));
    
}

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: WRONG ANSWER

Test 10

Group: 2

Verdict: WRONG ANSWER

Test 11

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 2

Verdict: ACCEPTED

Test 14

Group: 2

Verdict: ACCEPTED