Pakkaus

input/code.cpp: In function 'int main()':
input/code.cpp:19:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < s.length(); ++i) {      
                                  ^
input/code.cpp:28:62: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if ((!rNum && isdigit(s[i])) || (i == (s.length() - 1))) {
                                                              ^

#include <iostream>
#include <string>
#include <cctype>
// #include <fstream>

using namespace std;

int main() {
    /*ifstream in("input.txt");
    cin.rdbuf(in.rdbuf());*/
    
    string s;
    cin >> s;
    
    bool rNum = true;
    string num = "";
    string tok = "";
    string res = "";
    for (int i = 0; i < s.length(); ++i) {      
        if (rNum && isdigit(s[i])) {
            num += s[i];
        }
        else if (!isdigit(s[i])) {
            tok += s[i];
            rNum = false;
        }
        
        if ((!rNum && isdigit(s[i])) || (i == (s.length() - 1))) {
            
            int mp = stoi(num);
            
            for (int j = 0; j < mp; ++j) {
                res += tok;
            }
            
            num = s[i];
            tok = "";
            rNum = true;
        }
    }
    cout << res << endl;
    return 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: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED