oj.uz

답안 #561774

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
561774 2022-05-13T13:13:51 Z DanShaders Fish 2 (JOI22_fish2) C++17
43 / 100
 3849 ms 10136 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;

namespace x = __gnu_pbds;
template <typename T>
using ordered_set = x::tree<T, x::null_type, less<T>, x::rb_tree_tag, x::tree_order_statistics_node_update>;

template <typename T>
using normal_queue = priority_queue<T, vector<T>, greater<>>;

#define all(x) begin(x), end(x)
#define sz(x) ((int) (x).size())
#define x first
#define y second
using ll = long long;
using ld = long double;

const int N = 1 << 17, INF = 0x3f3f3f3f;

pair<int, int> t[2 * N];
int mod[2 * N];

pair<int, int> merge(pair<int, int> a, pair<int, int> b) {
	if (a.x == b.x) {
		return {a.x, a.y + b.y};
	}
	return min(a, b);
}

void tapply(int i, int x) {
	t[i].x += x;
	mod[i] += x;
}

void tpush(int i) {
	if (mod[i]) {
		tapply(2 * i + 1, mod[i]);
		tapply(2 * i + 2, mod[i]);
		mod[i] = 0;
	}
}

void tpull(int i) {
	t[i] = merge(t[2 * i + 1], t[2 * i + 2]);
}

void tadd(int ql, int qr, int x, int ci = 0, int cl = 0, int cr = N) {
	if (ql <= cl && cr <= qr) {
		tapply(ci, x);
		return;
	}
	if (qr <= cl || cr <= ql) {
		return;
	}
	int mid = (cl + cr) / 2;
	tpush(ci);
	tadd(ql, qr, x, 2 * ci + 1, cl, mid);
	tadd(ql, qr, x, 2 * ci + 2, mid, cr);
	tpull(ci);
}

pair<int, int> tget(int ql, int qr, int ci = 0, int cl = 0, int cr = N) {
	if (ql <= cl && cr <= qr) {
		return t[ci];
	}
	if (qr <= cl || cr <= ql) {
		return {+INF, 0};
	}
	int mid = (cl + cr) / 2;
	tpush(ci);
	return merge(
		tget(ql, qr, 2 * ci + 1, cl, mid),
		tget(ql, qr, 2 * ci + 2, mid, cr)
	);
}

pair<int, int> g[2 * N];
ll gs[2 * N];

void gset(int i, int x) {
	g[i + N] = {x, i};
	i += N;
	gs[i] = x;
	i /= 2;
	while (i) {
		g[i] = max(g[2 * i], g[2 * i + 1]);
		gs[i] = gs[2 * i] + gs[2 * i + 1];
		i /= 2;
	}
}

pair<int, int> gget(int l, int r) {
	l += N, r += N - 1;
	pair<int, int> ans = {-1, -1};
	while (l <= r) {
		if (l & 1)	ans = max(ans, g[l]);
		if (!(r & 1))	ans = max(ans, g[r]);
		l = (l + 1) / 2;
		r = (r - 1) / 2;
	}
	return ans;
}

ll gsum(int l, int r) {
	l += N, r += N - 1;
	ll ans = 0;
	while (l <= r) {
		if (l & 1)	ans += gs[l];
		if (!(r & 1))	ans += gs[r];
		l = (l + 1) / 2;
		r = (r - 1) / 2;
	}
	return ans;
}

int gfirstgreater(int ql, int qr, ll x, int ci = 1, int cl = 0, int cr = N) {
	if (qr <= cl || cr <= ql || g[ci].x <= x) {
		return qr;
	}
	if (cr - cl == 1) {
		return cl;
	}
	int mid = (cl + cr) / 2;
	int res = gfirstgreater(ql, qr, x, 2 * ci, cl, mid);
	if (res >= qr) {
		return gfirstgreater(ql, qr, x, 2 * ci + 1, mid, cr);
	} else {
		return res;
	}
}

int glastgreater(int ql, int qr, ll x, int ci = 1, int cl = 0, int cr = N) {
	if (qr <= cl || cr <= ql || g[ci].x <= x) {
		return ql - 1;
	}
	if (cr - cl == 1) {
		return cl;
	}
	int mid = (cl + cr) / 2;
	int res = glastgreater(ql, qr, x, 2 * ci + 1, mid, cr);
	if (res < ql) {
		return glastgreater(ql, qr, x, 2 * ci, cl, mid);
	} else {
		return res;
	}
}

int a[N], n;
int up[N];

struct S {
	int i, x, cl, cr;

	bool operator<(const S &other) const {
		return i < other.i;
	}

	bool operator==(const S &other) const {
		return i == other.i && cl == other.cl && cr == other.cr;
	}
};

void set_up_to(const S &s) {
	if (up[s.i] != s.x) {
		up[s.i] = s.x;
		// cout << "real tadd " << s.cl + 1 << " " << s.cr << " " << (s.x ? 1 : -1) << endl;
		if (!s.x) {
			tadd(s.cl + 1, s.cr, -1);
		} else {
			tadd(s.cl + 1, s.cr, 1);
		}
	}
}

void loop_set_up(int u, int l, int r, int x, vector<S> &change) {
	if (!(l <= u && u < r)) {
		return;
	}
	auto ai = [&](int i) {
		if (i < l || i >= r) {
			return +INF;
		}
		return a[i];
	};

	int cl = glastgreater(l, u, a[u]),
		cr = gfirstgreater(u + 1, r, a[u] - 1);
	ll sm = gsum(cl + 1, cr);
	while (cl != l - 1 || cr != r) {
		if (sm < min(ai(cl), ai(cr))) {
			int v = gget(cl + 1, cr).y;
			// cout << "set " << cl << " " << cr << " " << v << endl;
			change.push_back({v, x, cl, cr});
			if (ai(cl) <= ai(cr)) {
				sm += a[cl];
				--cl;
			} else {
				sm += a[cr];
				++cr;
			}
		}
		cl = glastgreater(l, cl + 1, sm);
		cr = gfirstgreater(cr - 1, r, sm);
		sm = gsum(cl + 1, cr);
	}
}

int ai(int i) {
	if (i < 0 || i >= n) {
		return +INF;
	}
	return a[i];
}

vector<S> change;

int query(int l, int r) {
	change.clear();

	if (l) {
		loop_set_up(l, 0, n, 0, change);
		loop_set_up(l, l, r, 1, change);
	}
	if (r != n) {
		loop_set_up(r - 1, 0, n, 0, change);
		loop_set_up(r - 1, l, r, 1, change);
	}

	stable_sort(all(change));
	reverse(all(change));
	change.resize(unique(all(change)) - begin(change));
	reverse(all(change));

	for (auto &s : change) {
		// cout << "temp " << s.cl << " " << s.cr << " " << s.i << " " << s.x << endl;
		int backup = up[s.i];
		set_up_to(s);
		s.x = backup;
	}
	auto [ansx, ansy] = tget(l, r);
	// cout << ansx << " " << ansy << endl;
	for (const auto &s : change) {
		set_up_to(s);
	}
	return ansx ? 0 : ansy;
}

void aset(int i, int x) {
	int cl = glastgreater(0, i, a[i]),
		cr = gfirstgreater(i + 1, n, a[i] - 1),
		nl = glastgreater(0, i, x),
		nr = gfirstgreater(i + 1, n, x - 1);
	// cout << cr << endl;
	int clef = gget(cl + 1, i).y, crig = gget(i + 1, cr).y,
		nlef = gget(nl + 1, i).y, nrig = gget(i + 1, nr).y;

	// cout << "counted " << clef << " " << crig << " " << nlef << " " << nrig << endl;

	change.clear();
	loop_set_up(i, 0, n, 0, change);
	loop_set_up(cl, 0, n, 0, change);
	loop_set_up(cr, 0, n, 0, change);
	loop_set_up(clef, 0, n, 0, change);
	loop_set_up(crig, 0, n, 0, change);
	loop_set_up(nl, 0, n, 0, change);
	loop_set_up(nr, 0, n, 0, change);
	loop_set_up(nlef, 0, n, 0, change);
	loop_set_up(nrig, 0, n, 0, change);

	a[i] = x;
	gset(i, x);

	loop_set_up(i, 0, n, 1, change);
	loop_set_up(cl, 0, n, 1, change);
	loop_set_up(cr, 0, n, 1, change);
	loop_set_up(clef, 0, n, 1, change);
	loop_set_up(crig, 0, n, 1, change);
	loop_set_up(nl, 0, n, 1, change);
	loop_set_up(nr, 0, n, 1, change);
	loop_set_up(nlef, 0, n, 1, change);
	loop_set_up(nrig, 0, n, 1, change);

	stable_sort(all(change));
	reverse(all(change));
	change.resize(unique(all(change)) - begin(change));
	reverse(all(change));
	
	for (auto s : change) {
		// cout << "apply " << s.cl << " " << s.cr << " " << s.i << " " << s.x << endl;
		set_up_to(s);
	}
}

signed main() {
	cin.tie(0)->sync_with_stdio(0);
	cin >> n;
	for (int i = 0; i < n; ++i) {
		cin >> a[i];
		g[N + i] = {a[i], i};
		gs[N + i] = a[i];
	}
	for (int i = 0; i < n; ++i) {
		t[N - 1 + i] = {0, 1};
	}
	for (int i = N - 1; i--; ) {
		t[i] = merge(t[2 * i + 1], t[2 * i + 2]);
		mod[i] = 0;
	}
	for (int i = N; i--; ) {
		g[i] = max(g[2 * i], g[2 * i + 1]);
		gs[i] = gs[2 * i] + gs[2 * i + 1];
	}

	for (int i = 0; i < n; ++i) {
		int cl = glastgreater(0, i, a[i]);
		int cr = gfirstgreater(i + 1, n, a[i] - 1);
		if (gsum(cl + 1, cr) < min(ai(cl), ai(cr)) &&
			(cl != -1 || cr != n)) {
			set_up_to({i, 1, cl, cr});
		}
	}

	int queries;
	cin >> queries;
	while (queries--) {
		int type, l, r;
		cin >> type >> l >> r;
		if (type == 1) {
			aset(l - 1, r);
		} else {
			cout << query(l - 1, r) << "\n";
		}
	}
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3924 KB Output is correct
2 Correct 2 ms 3924 KB Output is correct
3 Correct 2 ms 3924 KB Output is correct
4 Correct 2 ms 3924 KB Output is correct
5 Incorrect 19 ms 3924 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 3924 KB Output is correct
2 Correct 72 ms 7332 KB Output is correct
3 Correct 56 ms 7372 KB Output is correct
4 Correct 61 ms 7476 KB Output is correct
5 Correct 57 ms 7360 KB Output is correct
6 Correct 60 ms 7436 KB Output is correct
7 Correct 50 ms 7372 KB Output is correct
8 Correct 51 ms 7436 KB Output is correct
9 Correct 43 ms 7436 KB Output is correct
10 Correct 59 ms 7440 KB Output is correct
11 Correct 55 ms 7404 KB Output is correct
12 Correct 44 ms 7432 KB Output is correct
13 Correct 42 ms 7356 KB Output is correct
14 Correct 54 ms 7372 KB Output is correct
15 Correct 52 ms 7348 KB Output is correct

Subtask #3
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3924 KB Output is correct
2 Correct 2 ms 3924 KB Output is correct
3 Correct 2 ms 3924 KB Output is correct
4 Correct 2 ms 3924 KB Output is correct
5 Incorrect 19 ms 3924 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 3924 KB Output is correct
2 Correct 72 ms 7332 KB Output is correct
3 Correct 56 ms 7372 KB Output is correct
4 Correct 61 ms 7476 KB Output is correct
5 Correct 57 ms 7360 KB Output is correct
6 Correct 60 ms 7436 KB Output is correct
7 Correct 50 ms 7372 KB Output is correct
8 Correct 51 ms 7436 KB Output is correct
9 Correct 43 ms 7436 KB Output is correct
10 Correct 59 ms 7440 KB Output is correct
11 Correct 55 ms 7404 KB Output is correct
12 Correct 44 ms 7432 KB Output is correct
13 Correct 42 ms 7356 KB Output is correct
14 Correct 54 ms 7372 KB Output is correct
15 Correct 52 ms 7348 KB Output is correct
16 Correct 2 ms 3924 KB Output is correct
17 Incorrect 2433 ms 7884 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 3924 KB Output is correct
2 Correct 72 ms 7332 KB Output is correct
3 Correct 56 ms 7372 KB Output is correct
4 Correct 61 ms 7476 KB Output is correct
5 Correct 57 ms 7360 KB Output is correct
6 Correct 60 ms 7436 KB Output is correct
7 Correct 50 ms 7372 KB Output is correct
8 Correct 51 ms 7436 KB Output is correct
9 Correct 43 ms 7436 KB Output is correct
10 Correct 59 ms 7440 KB Output is correct
11 Correct 55 ms 7404 KB Output is correct
12 Correct 44 ms 7432 KB Output is correct
13 Correct 42 ms 7356 KB Output is correct
14 Correct 54 ms 7372 KB Output is correct
15 Correct 52 ms 7348 KB Output is correct
16 Correct 3 ms 3924 KB Output is correct
17 Correct 3274 ms 7796 KB Output is correct
18 Correct 1429 ms 7680 KB Output is correct
19 Correct 2222 ms 7824 KB Output is correct
20 Correct 1139 ms 7768 KB Output is correct
21 Correct 3849 ms 7736 KB Output is correct
22 Correct 1447 ms 9668 KB Output is correct
23 Correct 3219 ms 9024 KB Output is correct
24 Correct 1334 ms 9540 KB Output is correct
25 Correct 2752 ms 9092 KB Output is correct
26 Correct 546 ms 10092 KB Output is correct
27 Correct 752 ms 10136 KB Output is correct
28 Correct 945 ms 9236 KB Output is correct
29 Correct 611 ms 10100 KB Output is correct
30 Correct 765 ms 10044 KB Output is correct
31 Correct 1159 ms 9552 KB Output is correct
32 Correct 1387 ms 9388 KB Output is correct
33 Correct 976 ms 9160 KB Output is correct
34 Correct 1243 ms 9888 KB Output is correct
35 Correct 856 ms 9564 KB Output is correct
36 Correct 1148 ms 9616 KB Output is correct
37 Correct 1164 ms 9152 KB Output is correct
38 Correct 806 ms 9172 KB Output is correct
39 Correct 656 ms 9752 KB Output is correct
40 Correct 302 ms 9728 KB Output is correct

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3924 KB Output is correct
2 Correct 2 ms 3924 KB Output is correct
3 Correct 2 ms 3924 KB Output is correct
4 Correct 2 ms 3924 KB Output is correct
5 Incorrect 19 ms 3924 KB Output isn't correct
6 Halted 0 ms 0 KB -