oj.uz

답안 #391304

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
391304 2021-04-18T13:28:12 Z Mlxa Worst Reporter 4 (JOI21_worst_reporter4) C++14
79 / 100
 1825 ms 411948 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define int ll
#define x first
#define y second
#define mp make_pair
#define mt make_tuple
#define all(x) x.begin(), x.end()

const int NODES = 4e6 + 10;
mt19937 rnd;

struct node {
	int x, w, dy, sy, ls, rs;
} pool[NODES];
int ff = 1;

#define getter(f) int &f(int v) { assert(0 <= v && v < NODES); return pool[v].f; }
getter(x) getter(w) getter(dy) getter(sy) getter(ls) getter(rs)

int new_node(int nx, int ny) {
	assert(ff < NODES);
	int v = ff++;
	x(v) = nx;
	w(v) = (int)rnd();
	dy(v) = ny;
	sy(v) = ny;
	ls(v) = rs(v) = 0;
	return v;
}

int pull(int v) {
	sy(v) = sy(ls(v)) + dy(v) + sy(rs(v));
	return v;
}

void to_vector(int t, vector<pair<int, int>> &vec) {
	if (!t) {
		return;
	}
	to_vector(ls(t), vec);
	vec.emplace_back(x(t), dy(t));
	to_vector(rs(t), vec);
}

void print(int t) {
	vector<pair<int, int>> v;
	to_vector(t, v);
	for (auto e : v) {
		cout << "(" << e.x << "; " << e.y << ") ";
	}
	cout << endl;
}


pair<int, int> splitsum(int t, int s) {
	if (!t) {
		return {0, 0};
	}
	// print(t);
	assert(0 <= s && s <= sy(t));
	int lsum = sy(ls(t)), msum = dy(t);
	if (lsum < s && lsum + msum > s) {
		int lt = new_node(x(t), s - lsum), rt = new_node(x(t), msum - dy(lt));
		ls(lt) = ls(t), rs(rt) = rs(t);
		return {pull(lt), pull(rt)};
	}
	int l, r;
	if (s <= lsum) {
		tie(l, ls(t)) = splitsum(ls(t), s);
		r = pull(t);
	} else {
		tie(rs(t), r) = splitsum(rs(t), s - lsum - msum);
		l = pull(t);
	}
	assert(sy(l) == s);
	return {l, r};
}

// (-inf, k], (k, +inf)
pair<int, int> split(int t, int k) {
	if (!t) {
		return {0, 0};
	}
	int l, r;
	if (k < x(t)) {
		tie(l, ls(t)) = split(ls(t), k);
		r = pull(t);
	} else {
		tie(rs(t), r) = split(rs(t), k);
		l = pull(t);
	}
	return {l, r};
}

int merge(int l, int r) {
	if (!l) {
		return r;
	}
	if (!r) {
		return l;
	}
	if (w(l) < w(r)) {
		rs(l) = merge(rs(l), r);
		return pull(l);
	} else {
		ls(r) = merge(l, ls(r));
		return pull(r);
	}
}

int get_value(int t, int x) {
	int l, r;
	tie(l, r) = split(t, x);
	int res = sy(l);
	t = merge(l, r);
	return res;
}

__attribute__((warn_unused_result))
int insert(int t, int nx, int ny) {
	int l, m, r;
	tie(l, m) = split(t, nx - 1);
	tie(m, r) = split(m, nx);
	// cout << "insert " << nx << " " << ny << endl;
	// print(l);
	// print(m);
	// print(r);
	// cout << "---" << endl;
	m = new_node(nx, sy(m) + ny);
	l = merge(l, m);
	// print(l);
	return merge(l, r);
}

__attribute__((warn_unused_result))
int uminpref(int t, int px) {
	int checksum = sy(t);

	int l, m, r;
	tie(l, m) = split(t, px - 1);
	tie(m, r) = split(m, px);
	if (sy(m) <= 0) {
		int p, q;
		tie(p, q) = splitsum(l, sy(l) + sy(m));
		t = merge(p, r);
		assert(sy(t) == checksum);
		return t;
	} else {
		return merge(merge(l, m), r);
	}
}

__attribute__((warn_unused_result))
int add(int tv, int tu) {
	if (!tv) {
		return tu;
	}
	if (!tu) {
		return tv;
	}
	tv = insert(tv, x(tu), dy(tu));
	tv = add(tv, ls(tu));
	tv = add(tv, rs(tu));
	return tv;
}



const int N = 2e5 + 10;
int n, ia[N], ih[N], ic[N], dp[N];
vector<int> g[N];

bool used[N];

void dfs(int v) {
	used[v] = true;
	for (int u : g[v]) {
		if (used[u]) {
			continue;
		}
		dfs(u);
		dp[u] = uminpref(dp[u], ih[u]);
		// cout << "v = " << u + 1 << endl;
		// print(dp[u]);
		dp[v] = add(dp[v], dp[u]);
	}
	dp[v] = insert(dp[v], 0, ic[v]);
	dp[v] = insert(dp[v], ih[v], -ic[v]);
	dp[v] = insert(dp[v], ih[v] + 1, ic[v]);
}


signed main() {
#ifdef LC
	assert(freopen("input.txt", "r", stdin));
#endif
	ios::sync_with_stdio(0); cin.tie(0); 

	cin >> n;
	for (int i = 0; i < n; ++i) {
		cin >> ia[i] >> ih[i] >> ic[i];
		--ia[i];
		g[ia[i]].push_back(i);
	}
	int answer = 0;
	for (int i = 0; i < n; ++i) {
		if (used[i]) {
			continue;
		}
		int v = ia[i], u = ia[ia[i]];
		while (v != u) {
			v = ia[v];
			u = ia[ia[u]];
		}
		vector<int> from = {v};
		u = ia[u];
		while (u != v) {
			from.push_back(u);
			u = ia[u];
		}
		int t = 0;
		for (int x : from) {
			used[x] = true;
		}
		for (int x : from) {
			dfs(x);
			t = add(t, dp[x]);
		}

		// cout << "v = " << v + 1 << endl;
		// print(t);

		t = insert(t, 0, 0);
		vector<pair<int, int>> ve;
		to_vector(t, ve);
		int cur = (int)1e18, y = 0;
		for (auto e : ve) {
			y += e.y;
			cur = min(cur, y);
		}
		answer += cur;
	}
	cout << answer << "\n";
	return 0;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 16 ms 6924 KB Output is correct
6 Correct 13 ms 6652 KB Output is correct
7 Correct 9 ms 6488 KB Output is correct
8 Correct 14 ms 7100 KB Output is correct
9 Correct 11 ms 6608 KB Output is correct
10 Correct 9 ms 6476 KB Output is correct
11 Correct 7 ms 6092 KB Output is correct
12 Correct 13 ms 6820 KB Output is correct
13 Correct 9 ms 6784 KB Output is correct
14 Correct 13 ms 6604 KB Output is correct
15 Correct 11 ms 6688 KB Output is correct
16 Correct 14 ms 7176 KB Output is correct
17 Correct 11 ms 6788 KB Output is correct
18 Correct 7 ms 6100 KB Output is correct
19 Correct 14 ms 6532 KB Output is correct
20 Correct 10 ms 6484 KB Output is correct
21 Correct 8 ms 6500 KB Output is correct
22 Correct 10 ms 6400 KB Output is correct
23 Correct 8 ms 6220 KB Output is correct
24 Correct 14 ms 6532 KB Output is correct
25 Correct 10 ms 6476 KB Output is correct
26 Correct 7 ms 6348 KB Output is correct
27 Correct 11 ms 6476 KB Output is correct
28 Correct 11 ms 6644 KB Output is correct
29 Correct 12 ms 6840 KB Output is correct
30 Correct 17 ms 6988 KB Output is correct
31 Correct 17 ms 6944 KB Output is correct

Subtask #2
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 6988 KB Output is correct
2 Correct 713 ms 98692 KB Output is correct
3 Correct 484 ms 80056 KB Output is correct
4 Correct 692 ms 98612 KB Output is correct
5 Correct 443 ms 79860 KB Output is correct
6 Correct 280 ms 60904 KB Output is correct
7 Correct 224 ms 48456 KB Output is correct
8 Correct 474 ms 77204 KB Output is correct
9 Correct 425 ms 77252 KB Output is correct
10 Correct 232 ms 77192 KB Output is correct
11 Correct 500 ms 71020 KB Output is correct
12 Correct 410 ms 70980 KB Output is correct
13 Correct 691 ms 111040 KB Output is correct
14 Correct 405 ms 86936 KB Output is correct
15 Correct 151 ms 47428 KB Output is correct
16 Correct 657 ms 65316 KB Output is correct
17 Correct 369 ms 63032 KB Output is correct
18 Correct 187 ms 63052 KB Output is correct
19 Correct 524 ms 54884 KB Output is correct
20 Correct 252 ms 50740 KB Output is correct
21 Correct 767 ms 66144 KB Output is correct
22 Correct 372 ms 64052 KB Output is correct
23 Correct 162 ms 58424 KB Output is correct
24 Correct 449 ms 68316 KB Output is correct
25 Correct 457 ms 74868 KB Output is correct
26 Correct 448 ms 77168 KB Output is correct
27 Correct 1194 ms 79892 KB Output is correct
28 Correct 1317 ms 79796 KB Output is correct

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 16 ms 6924 KB Output is correct
6 Correct 13 ms 6652 KB Output is correct
7 Correct 9 ms 6488 KB Output is correct
8 Correct 14 ms 7100 KB Output is correct
9 Correct 11 ms 6608 KB Output is correct
10 Correct 9 ms 6476 KB Output is correct
11 Correct 7 ms 6092 KB Output is correct
12 Correct 13 ms 6820 KB Output is correct
13 Correct 9 ms 6784 KB Output is correct
14 Correct 13 ms 6604 KB Output is correct
15 Correct 11 ms 6688 KB Output is correct
16 Correct 14 ms 7176 KB Output is correct
17 Correct 11 ms 6788 KB Output is correct
18 Correct 7 ms 6100 KB Output is correct
19 Correct 14 ms 6532 KB Output is correct
20 Correct 10 ms 6484 KB Output is correct
21 Correct 8 ms 6500 KB Output is correct
22 Correct 10 ms 6400 KB Output is correct
23 Correct 8 ms 6220 KB Output is correct
24 Correct 14 ms 6532 KB Output is correct
25 Correct 10 ms 6476 KB Output is correct
26 Correct 7 ms 6348 KB Output is correct
27 Correct 11 ms 6476 KB Output is correct
28 Correct 11 ms 6644 KB Output is correct
29 Correct 12 ms 6840 KB Output is correct
30 Correct 17 ms 6988 KB Output is correct
31 Correct 17 ms 6944 KB Output is correct
32 Correct 16 ms 6988 KB Output is correct
33 Correct 713 ms 98692 KB Output is correct
34 Correct 484 ms 80056 KB Output is correct
35 Correct 692 ms 98612 KB Output is correct
36 Correct 443 ms 79860 KB Output is correct
37 Correct 280 ms 60904 KB Output is correct
38 Correct 224 ms 48456 KB Output is correct
39 Correct 474 ms 77204 KB Output is correct
40 Correct 425 ms 77252 KB Output is correct
41 Correct 232 ms 77192 KB Output is correct
42 Correct 500 ms 71020 KB Output is correct
43 Correct 410 ms 70980 KB Output is correct
44 Correct 691 ms 111040 KB Output is correct
45 Correct 405 ms 86936 KB Output is correct
46 Correct 151 ms 47428 KB Output is correct
47 Correct 657 ms 65316 KB Output is correct
48 Correct 369 ms 63032 KB Output is correct
49 Correct 187 ms 63052 KB Output is correct
50 Correct 524 ms 54884 KB Output is correct
51 Correct 252 ms 50740 KB Output is correct
52 Correct 767 ms 66144 KB Output is correct
53 Correct 372 ms 64052 KB Output is correct
54 Correct 162 ms 58424 KB Output is correct
55 Correct 449 ms 68316 KB Output is correct
56 Correct 457 ms 74868 KB Output is correct
57 Correct 448 ms 77168 KB Output is correct
58 Correct 1194 ms 79892 KB Output is correct
59 Correct 1317 ms 79796 KB Output is correct
60 Correct 3 ms 4940 KB Output is correct
61 Correct 3 ms 5032 KB Output is correct
62 Correct 3 ms 4940 KB Output is correct
63 Correct 4 ms 4940 KB Output is correct
64 Runtime error 1825 ms 411948 KB Execution killed with signal 6
65 Halted 0 ms 0 KB -