oj.uz

Submission #290211

# Submission time Handle Problem Language Result Execution time Memory
290211 2020-09-03T13:44:42 Z shivensinha4 Pinball (JOI14_pinball) C++17
100 / 100
 685 ms 48768 KB 
#include <bits/stdc++.h> 
using namespace std; 
#define for_(i, s, e) for (int i = s; i < (int) e; i++)
#define for__(i, s, e) for (ll i = s; i < e; i++)
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
#define endl '\n'

ll INF = 1e15;

class SegmentTree {
	private:
		vector<ll> tree; int n;
		ll bound = INF;
		
		ll merge(ll a, ll b) {
			return min(a, b);
		}
		
		void update(int i, ll val, int l, int r, int p) {
			if (l > i or r < i) return;
			if (l == r) {
				tree[p] = min(tree[p], val);
				return;
			}
			
			int mid = (l + r) / 2;
			int c1 = 2*p+1, c2 = 2*p+2;
			update(i, val, l, mid, c1); update(i, val, mid+1, r, c2);
			tree[p] = merge(tree[c1], tree[c2]);
		}
		
		ll mn(int i, int j, int l, int r, int p) {
			if (l > j or r < i) return bound;
			if (l >= i and r <= j) return tree[p];
			
			int mid = (l + r) / 2;
			int c1 = 2*p+1, c2 = 2*p+2;
			return merge(mn(i, j, l, mid, c1), mn(i, j, mid+1, r, c2));
		}
	
	public: 
		SegmentTree(int N) {
			n = N;
			tree.resize(4*n, INF);
		}
		
		ll mn(int i, int j) {
			return mn(i, j, 0, n-1, 0);
		}
		
		void update(int i, ll val) {
			update(i, val, 0, n-1, 0);
		}
};



int main() {
	#ifndef ONLINE_JUDGE
	//freopen("test.in", "r", stdin);
	#endif
	
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	
	int m, n; cin >> m >> n;
	vector<ll> cost(m); vi l(m), r(m), c(m);
	set<int> allPts;
	allPts.insert(1); allPts.insert(n);
	for_(i, 0, m) {
		cin >> l[i] >> r[i] >> c[i] >> cost[i];
		allPts.insert(l[i]); allPts.insert(r[i]); allPts.insert(c[i]);
	}
	
	//sort(allPts.begin(), allPts.end());
	unordered_map<int, int> id;
	int pt = 0;
	for (int i: allPts) id[i] = pt++;
	
	for_(i, 0, m) {
		l[i] = id[l[i]]; r[i] = id[r[i]]; c[i] = id[c[i]];
	}
	
	int pointCount = id[*allPts.rbegin()]+1;
	SegmentTree rCost(pointCount), lCost(pointCount);
	
	ll ans = INF;
	for_(i, 0, m) {
		ll lc = lCost.mn(l[i], r[i]), rc = rCost.mn(l[i], r[i]);
		if (r[i] == pointCount-1) rc = 0;
		if (l[i] == 0) lc = 0;
		if (lc != INF) lCost.update(c[i], lc+cost[i]);
		if (rc != INF) rCost.update(c[i], rc+cost[i]);
		ans = min(ans, lc+rc+cost[i]);
	}
	
	cout << (ans == INF ? -1 : ans) << 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 1 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 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 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 1 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 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 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 416 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 1 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 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 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 416 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 2 ms 512 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 3 ms 768 KB Output is correct
20 Correct 2 ms 512 KB Output is correct
21 Correct 1 ms 512 KB Output is correct
22 Correct 3 ms 768 KB Output is correct
23 Correct 2 ms 768 KB Output is correct
24 Correct 3 ms 768 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 1 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 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 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 416 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 2 ms 512 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 3 ms 768 KB Output is correct
20 Correct 2 ms 512 KB Output is correct
21 Correct 1 ms 512 KB Output is correct
22 Correct 3 ms 768 KB Output is correct
23 Correct 2 ms 768 KB Output is correct
24 Correct 3 ms 768 KB Output is correct
25 Correct 28 ms 3200 KB Output is correct
26 Correct 91 ms 9220 KB Output is correct
27 Correct 274 ms 17052 KB Output is correct
28 Correct 166 ms 2552 KB Output is correct
29 Correct 181 ms 15132 KB Output is correct
30 Correct 233 ms 5240 KB Output is correct
31 Correct 495 ms 28116 KB Output is correct
32 Correct 385 ms 20380 KB Output is correct
33 Correct 52 ms 9476 KB Output is correct
34 Correct 215 ms 24640 KB Output is correct
35 Correct 363 ms 48488 KB Output is correct
36 Correct 685 ms 48768 KB Output is correct
37 Correct 503 ms 48620 KB Output is correct
38 Correct 487 ms 48616 KB Output is correct