Submission #1292562

#	Time	Username	Problem	Language	Result	Execution time	Memory
1292562		lukaye_19	Arranging Shoes (IOI19_shoes)	C++20	Compilation error	0 ms	0 KiB

shoes

long long count_swaps(vector<int> Shoes) {
    long long Answer = 0;

    while (Shoes.size() != 0) 
    {
        int FirstShoe = Shoes[0];

        int ShoeIndex = -1;
        
        for (int i = 1; i < Shoes.size(); i++) {
            if (Shoes[i] == -FirstShoe) 
            {
                ShoeIndex = i;
                
                break;
            }
        }

        if (FirstShoe > 0) {
            Answer += (ShoeIndex - 1);

            while (ShoeIndex > 1) {
                swap(Shoes[ShoeIndex], Shoes[ShoeIndex - 1]);
                
                ShoeIndex--;
            }
        }
        else {
            Answer += ShoeIndex;

            while (ShoeIndex > 0) {
                swap(Shoes[ShoeIndex], Shoes[ShoeIndex - 1]);
                
                ShoeIndex--;
            }
        }

        Shoes.erase(Shoes.begin());
        Shoes.erase(Shoes.begin());
    }

    return Answer;
}

Compilation message (stderr)

shoes.cpp:1:23: error: 'vector' was not declared in this scope
    1 | long long count_swaps(vector<int> Shoes) {
      |                       ^~~~~~
shoes.cpp:1:30: error: expected primary-expression before 'int'
    1 | long long count_swaps(vector<int> Shoes) {
      |                              ^~~