답안 #523479

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
523479	2022-02-07T17:30:30 Z	blue	학생 (COCI14_studentsko)	C++17	컴파일 오류	0 ms	0 KB

studentsko

#include <iostream>
#include <map>
#include <vector>
#include <numeric>
using namespace std;

int* v;

using vi = vector<int>;

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int N, K;
	cin >> N >> K;

	map<int, int> ct;

	v = new int[1+N];
	for(int i = 1; i <= N; i++)
	{
		cin >> v[i];
		ct[v[i]] = 0;
	}

	int x = -1;
	for(auto& z : ct) z.second = ++x;

	for(int i = 1; i <= N; i++) v[i] = ct[v[i]] / K;


	vi BIT(1+N, 0);

	vi I(N);
	iota(I.begin(), I.end(), 1);

	sort(I.begin(), I.end(), [] (int p, int q)
	{
		if(v[p] == v[q]) return p < q;
		else return v[p] < v[q];
	});

	int res = N;

	for(int i : I)
	{
		int curr = 1;

		for(int j = i-1; j >= 1; j -= j&-j)
			curr = max(BIT[i], BIT[j] + 1);

		res = min(res, N - curr);

		for(int j = i; j <= N; j += j&-j)
			BIT[j] = max(BIT[j], curr);
	}

	cout << res << '\n';
}

Compilation message

studentsko.cpp: In function 'int main()':
studentsko.cpp:39:2: error: 'sort' was not declared in this scope; did you mean 'qsort'?
   39 |  sort(I.begin(), I.end(), [] (int p, int q)
      |  ^~~~
      |  qsort