답안 #500436

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
500436 2021-12-31T06:10:10 Z Mazaalai Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++17
0 / 100
24 ms 51148 KB
#include <bits/stdc++.h>
#define pb push_back
#define ff first
#define ss second
#define ALL(x) x.begin(),x.end()
using namespace std;
using PII = pair <int, int>;
using VI = vector <int>;
using VVI = vector <VI>;
using VPI = vector <PII>;
struct Node {
	int max, max1, maxInv;
	Node() {
		max = max1 = -1;
		maxInv = -1;
	}
};
const int N = 1e6 + 5;
const int M = 4 * N;
int n, m;
VPI addNum;
int nums[N], queries[N], K[N];
Node node[M];
void build(int l, int r, int head) {
	if (l == r) {
		node[head].max = nums[l];
		return;
	}
	int mid = (l+r)>>1;
	build(l, mid, head*2+1);
	build(mid+1, r, head*2+2);
	node[head].max = max(node[head*2+1].max, node[head*2+2].max);
	int curMax = nums[l];
	for (int i = l+1; i <= r; i++) {
		if (nums[i] >= curMax) curMax = nums[i];
		else node[head].maxInv = max(node[head].maxInv, curMax+nums[i]);
	}
}
void update(int l, int r, int id, int val, int head) {
	if (l == r) {
		node[head].max1 = val;
		return;
	}
	int mid = (l+r)>>1;
	if (id <= mid) update(l, mid, id, val, head*2+1);
	else update(mid+1, r, id, val, head*2+2);
	node[head].max1 = max(node[head*2+1].max1, node[head*2+2].max1);
}
int query(int l, int r, int L, int R, int head) {
	if (l > R || L > r) return -1;
	if (L <= l && r <= R) 
		return node[head].max1;
	
	int mid = (l+r)>>1;
	return max(
		query(l, mid, L, R, head*2+1),
		query(mid+1, r, L, R, head*2+2)
	);
}
set <VI> allCheck;// lMax, id, mid, r, head;
int dfs(int l, int r, int L, int R, int id, int head) { // return insideMax;
	if (L <= l && r <= R) {
		queries[id] = max(queries[id], node[head].maxInv);
		return node[head].max;
	}
	int mid = (l+r)>>1;
	if (R <= mid) return dfs(l, mid, L, R, id, head*2+1);
	if (mid+1 <= L) return dfs(mid+1, r, L, R, id, head*2+2);
	int lMax = dfs(l, mid, L, R, id, head*2+1);
	int rMax = dfs(mid+1, r, L, R, id, head*2+2);
	allCheck.insert({lMax, id, mid+1, r, L, R, head*2+2});
	return max(lMax, rMax);
}
signed main() {
	freopen("in.txt", "r", stdin);
	freopen("out.txt", "w", stdout);
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		cin >> nums[i];
		addNum.pb({nums[i], i});
	}
	// build(1, n, 0);
	sort(ALL(addNum));
	memset(queries, -1, sizeof(queries));
	// for (int i = 1; i <= m; i++) {
	// 	int l, r, k; cin >> l >> r >> k;
	// 	K[i] = k;
	// 	dfs(1, n, l, r, i, 0);
	// }
	// int addId = 0, lMax, id, L, R, mid, r, head;
	// while(!allCheck.empty()) {
	// 	auto it = allCheck.begin();
	// 	VI tmp = *it;
	// 	allCheck.erase(it);
	// 	lMax = tmp[0];
	// 	id = tmp[1];
	// 	mid = tmp[2];
	// 	r = tmp[3];
	// 	L = tmp[4];
	// 	R = tmp[5];
	// 	head = tmp[6];
		// while (addId < addNum.size() && lMax > addNum[addId].ff) {
		// 	int num, I;
		// 	tie(num, I) = addNum[addId++];
		// 	update(1, n, I, num, 0);
		// }
		// int rMax = query(mid, r, L, R, head);
		// int cur = (rMax == -1 ? -1 : lMax+rMax);
		// queries[id] = max(queries[id], cur);
		// cout << "UPdate: " << id << ' ' << cur << ' ' << lMax << ' ' << rMax << ' ' << mid << ' ' << r << '\n';
	// }
	// for (int i = 1; i <= m; i++)
	// 	cout << queries[i] << ' ' << K[i] << '\n';
	for (int i = 1; i <= m; i++)
		cout << (queries[i] <= K[i] ? 1 : 0) << '\n';
}













Compilation message

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:75:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |  freopen("in.txt", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:76:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |  freopen("out.txt", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Incorrect 24 ms 51148 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 24 ms 51148 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 21 ms 51148 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 23 ms 51084 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 24 ms 51148 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 24 ms 51148 KB Output isn't correct
2 Halted 0 ms 0 KB -