Submission #889118

#	Time	Username	Problem	Language	Result	Execution time	Memory
889118		Erick_7314	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

long long count_swaps(std::vector<int> s) {
	long long n = s.size() / 2;
	// n*(n-1)/2
	return n*(n-1)/2;
}

Compilation message (stderr)

shoes.cpp:2:28: error: 'vector' is not a member of 'std'
    2 | long long count_swaps(std::vector<int> s) {
      |                            ^~~~~~
shoes.cpp:1:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
  +++ |+#include <vector>
    1 | 
shoes.cpp:2:35: error: expected primary-expression before 'int'
    2 | long long count_swaps(std::vector<int> s) {
      |                                   ^~~