Monistus

input/code.cpp: In function 'int main()':
input/code.cpp:12:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |         while(i<s.size()){
      |               ~^~~~~~~~~

#include <bits/stdc++.h>
using namespace std;
string s;
int i,n;
 
bool isDigit(char c) {
	return c>='0'&&c<='9';
}
//0123 4 5 6789
int main(){
	cin>>s;
	while(i<s.size()){
		if(isDigit(s[i])){
			int m=s[i]-'0';
//			string t=s.substr(i+1,m);
//			s.erase(i,1);
//			s.insert(i,t);
			string t;
			t.clear();
			t.append(s,0,i);
			t.append(s,i+1,m);
			t.append(s,i+1,s.size()-i);
			s=t;
			if(isDigit(s[i]))
				i--;
		}
		i++;
	}
	cout<<s<<endl;
	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: 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