Pakkaus

input/code.cpp: In function 'int main()':
input/code.cpp:23:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for( std::string::size_type i = 0; i < kInt; ++i ) {
                                                        ^
input/code.cpp:50:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for( std::string::size_type i = 0; i < kInt; ++i ) {
                                            ^

#include <iostream>
#include <string>

int main() {
    std::string str;
    std::cin >> str;
    
    std::string k = "";
    std::string s = "";
    std::string result = "";
    int size;
    int isFirst = true;
    for( std::string::size_type i = 0; i < str.size(); ++i ) {
        std::string c;
        c = str[i];
        
        if ( isdigit(c[0]) != 0 ) {
            
            if ( isFirst == true ) {
                isFirst = false;
            } else if ( s.length() != 0 ) {
                int kInt = std::stoi(k, nullptr, 10);
                for( std::string::size_type i = 0; i < kInt; ++i ) {
                    result += s;
                }
                k = "";
                s = "";
            }
            
            int size = k.length();
            if ( size == 0 ) {
                k = c[0];
            } else {
                k += c[0];
            }
            
        } else {
            
            size = s.size();
            if ( size == 0 ) {
                s = c[0];
            } else {
                s += c[0];
            }
            
        }
    }
    
    int kInt = std::stoi(k, nullptr, 10);
    for( std::string::size_type i = 0; i < kInt; ++i ) {
        result += s;
    }
    
    std::cout << result;
}

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