oj.uz

Submission #310803

# Submission time Handle Problem Language Result Execution time Memory
310803 2020-10-08T02:30:09 Z ttnhuy313 Pinball (JOI14_pinball) C++14
100 / 100
 745 ms 20980 KB 
#include <bits/stdc++.h>

using namespace std;
#define int long long

const int N = 1e5 + 5, oo = 1e18;
int n, a[N], b[N], c[N], d[N], dp1[N], dp2[N], tot, bound;
unordered_map <int, int> inv;
set <int> val;

struct SegmentTree {
	int n;
	vector <int> st;
	SegmentTree() {}
	SegmentTree(int _n) {
		this -> n = _n;
		st.assign(4 * n + 5, oo);
	}
	int Left(int x) {return (x << 1);}
	int Right(int x) {return (x << 1) + 1;}
	void update(int id, int L, int R, int i, int val) {
		if (L > i || R < i) return;
		if (L == R) {
			st[id] = min(st[id], val);
			return;
		}
		int mid = (L + R) >> 1;
		update(Left(id), L, mid, i, val);
		update(Right(id), mid + 1, R, i, val);
		st[id] = min(st[Left(id)], st[Right(id)]);
	}
	int get(int id, int L, int R, int i, int j) {
		if (L > j || R < i) return oo;
		if (L >= i && R <= j) {
			return st[id];
		}
		int mid = (L + R) >> 1;
		return min(get(Left(id), L, mid, i, j), get(Right(id), mid + 1, R, i, j));
	}
	void update(int i, int val) {
		update(1, 1, n, i, val);
	}
	int get(int i, int j) {
		return get(1, 1, n, i, j);
	}
};

void solve1() {
	SegmentTree solver = SegmentTree(tot);
	for (int i = 1; i <= n; ++i)
		dp1[i] = oo;
	for (int i = 1; i <= n; ++i) {
		if (a[i] == 1) {
			solver.update(inv[c[i]], d[i]);
			dp1[i] = d[i];
			continue;
		}
		int u = *(val.lower_bound(a[i]));
		auto it = val.upper_bound(b[i]);
		it--;
		int v = *it;
		dp1[i] = min(dp1[i], solver.get(inv[u], inv[v]) + d[i]);
		solver.update(inv[c[i]], solver.get(inv[u], inv[v]) + d[i]);
	}
}

void solve2() {
	SegmentTree solver = SegmentTree(tot);
	for (int i = 1; i <= n; ++i)
		dp2[i] = oo;
	for (int i = 1; i <= n; ++i) {
		if (b[i] == bound) {
			solver.update(inv[c[i]], d[i]);
			dp2[i] = d[i];
			continue;
		}
		int u = *(val.lower_bound(a[i]));
		auto it = val.upper_bound(b[i]);
		it--;
		int v = *it;
		dp2[i] = min(dp2[i], solver.get(inv[u], inv[v]) + d[i]);
		solver.update(inv[c[i]], solver.get(inv[u], inv[v]) + d[i]);
	}
}

signed main() {
	ios_base::sync_with_stdio(0); cin.tie(0);

	cin >> n >> bound;
	val.clear();
	for (int i = 1; i <= n; ++i) {
		cin >> a[i] >> b[i] >> c[i] >> d[i];
		val.insert(c[i]);
	}
	for (int v : val) {
		inv[v] = ++tot;
	}
	solve1();
	solve2();
	int res = oo;
	for (int i = 1; i <= n; ++i)
		res = min(res, dp1[i] + dp2[i] - d[i]);
	if (res == oo) res = -1;

	cout << res << endl;

	return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 512 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 3 ms 512 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 3 ms 512 KB Output is correct
20 Correct 3 ms 512 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 4 ms 512 KB Output is correct
23 Correct 3 ms 512 KB Output is correct
24 Correct 3 ms 512 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 3 ms 512 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 3 ms 512 KB Output is correct
20 Correct 3 ms 512 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 4 ms 512 KB Output is correct
23 Correct 3 ms 512 KB Output is correct
24 Correct 3 ms 512 KB Output is correct
25 Correct 32 ms 1696 KB Output is correct
26 Correct 99 ms 4072 KB Output is correct
27 Correct 376 ms 9120 KB Output is correct
28 Correct 216 ms 5112 KB Output is correct
29 Correct 249 ms 7296 KB Output is correct
30 Correct 324 ms 6620 KB Output is correct
31 Correct 654 ms 13836 KB Output is correct
32 Correct 569 ms 15432 KB Output is correct
33 Correct 55 ms 4364 KB Output is correct
34 Correct 258 ms 10632 KB Output is correct
35 Correct 348 ms 20960 KB Output is correct
36 Correct 745 ms 20980 KB Output is correct
37 Correct 641 ms 20960 KB Output is correct
38 Correct 603 ms 20836 KB Output is correct