Pakkaus

#include <bits/stdc++.h>
using namespace std;
string c,d,e;
long long b,i;
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cin>>c;

  while(isdigit(c[i]) || isalpha(c[i])){ 
    
      while(isdigit(c[i]))i++;
       
       b=stoll(c.substr(0,i));
  
    c.erase(0,i);
    i=0;
    while(isalpha(c[i]))i++;
    d=c.substr(0,i);
    for(int j=0; j<b; j++) cout<<d;
    
    c.erase(0,i);
    i=0;
    
  }
           
    }
       
    

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED