oj.uz

답안 #561720

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
561720 2022-05-13T12:02:19 Z DanShaders Fish 2 (JOI22_fish2) C++17
8 / 100
 1709 ms 8668 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) {
	i += N;
	g[i] = {x, i};
	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], left_[N], right_[N];
 
void set_up_to(int i, int x) {
	if (up[i] != x) {
		up[i] = x;
		if (!x) {
			tadd(left_[i] + 1, right_[i], -1);
		} else {
			tadd(left_[i] + 1, right_[i], 1);
		}
	}
}
 
void loop_set_up(int u, int l, int r, int x, vector<pair<int, int>> &change) {
	assert(l <= u && u < r);
	auto ai = [&](int i) {
		if (i < l || i >= r) {
			return +INF;
		}
		return a[i];
	};
 
	int cl = max(left_[u], l - 1), cr = min(right_[u], r);
	ll sm = gsum(cl + 1, cr);
	// cout << "loop_set_up" << u << " " << l << " " << r << " " << x << endl;
	while (cl != l - 1 || cr != r) {
		// cout << cl << " " << cr << " " << sm << endl;
		if (sm < min(ai(cl), ai(cr))) {
			int v = gget(cl + 1, cr).y;
			change.push_back({v, x});
			// cout << "set up to " << u << " " << x << endl;
			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);
		// cout << "got new sum " << sm << " " << cl << " " << cr << endl;
		sm = gsum(cl + 1, cr);
	}
}
 
int ai(int i) {
	if (i < 0 || i >= n) {
		return +INF;
	}
	return a[i];
}
 
vector<pair<int, int>> 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), [](auto x, auto y) {
		return x.x < y.x;
	});
	reverse(all(change));
	change.resize(unique(all(change), [](auto x, auto y) {
		return x.x == y.x;
	}) - begin(change));

	assert(sz(change) < 120);

	for (auto &[where, what] : change) {
		int backup = up[what];
		set_up_to(where, what);
		what = backup;
	}
	auto [ansx, ansy] = tget(l, r);
	for (auto [where, what] : change) {
		set_up_to(where, what);
	}
	return ansx ? 0 : ansy;
}
 
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) {
		left_[i] = glastgreater(0, i, a[i]);
		right_[i] = gfirstgreater(i + 1, n, a[i] - 1);
		if (gsum(left_[i] + 1, right_[i]) < min(ai(left_[i]), ai(right_[i])) &&
			(left_[i] != -1 || right_[i] != n)) {
			set_up_to(i, 1);
		}
	}
 
	int queries;
	cin >> queries;
	while (queries--) {
		int type, l, r;
		cin >> type >> l >> r;
		if (type == 1) {
			// a[l - 1] = r;
			// gset(l - 1, r);
			assert(0);
		} else {
			cout << query(l - 1, r) << "\n";
		}
	}
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 7764 KB Execution killed with signal 6
2 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 64 ms 8184 KB Output is correct
3 Correct 60 ms 8140 KB Output is correct
4 Correct 59 ms 8136 KB Output is correct
5 Correct 60 ms 8216 KB Output is correct
6 Correct 50 ms 8124 KB Output is correct
7 Correct 43 ms 8136 KB Output is correct
8 Correct 51 ms 8168 KB Output is correct
9 Correct 44 ms 8140 KB Output is correct
10 Correct 54 ms 8216 KB Output is correct
11 Correct 48 ms 8232 KB Output is correct
12 Correct 47 ms 8168 KB Output is correct
13 Correct 45 ms 8140 KB Output is correct
14 Correct 50 ms 8188 KB Output is correct
15 Correct 53 ms 8156 KB Output is correct

Subtask #3
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 7764 KB Execution killed with signal 6
2 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 64 ms 8184 KB Output is correct
3 Correct 60 ms 8140 KB Output is correct
4 Correct 59 ms 8136 KB Output is correct
5 Correct 60 ms 8216 KB Output is correct
6 Correct 50 ms 8124 KB Output is correct
7 Correct 43 ms 8136 KB Output is correct
8 Correct 51 ms 8168 KB Output is correct
9 Correct 44 ms 8140 KB Output is correct
10 Correct 54 ms 8216 KB Output is correct
11 Correct 48 ms 8232 KB Output is correct
12 Correct 47 ms 8168 KB Output is correct
13 Correct 45 ms 8140 KB Output is correct
14 Correct 50 ms 8188 KB Output is correct
15 Correct 53 ms 8156 KB Output is correct
16 Correct 2 ms 3924 KB Output is correct
17 Incorrect 1709 ms 8668 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 3924 KB Output is correct
2 Correct 64 ms 8184 KB Output is correct
3 Correct 60 ms 8140 KB Output is correct
4 Correct 59 ms 8136 KB Output is correct
5 Correct 60 ms 8216 KB Output is correct
6 Correct 50 ms 8124 KB Output is correct
7 Correct 43 ms 8136 KB Output is correct
8 Correct 51 ms 8168 KB Output is correct
9 Correct 44 ms 8140 KB Output is correct
10 Correct 54 ms 8216 KB Output is correct
11 Correct 48 ms 8232 KB Output is correct
12 Correct 47 ms 8168 KB Output is correct
13 Correct 45 ms 8140 KB Output is correct
14 Correct 50 ms 8188 KB Output is correct
15 Correct 53 ms 8156 KB Output is correct
16 Runtime error 6 ms 7764 KB Execution killed with signal 6
17 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 7764 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -