oj.uz

Submission #709563

# Submission time Handle Problem Language Result Execution time Memory
709563 2023-03-13T23:16:03 Z GusterGoose27 Treatment Project (JOI20_treatment) C++11
35 / 100
 146 ms 25748 KB 
#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;
typedef long long ll;
typedef pair<ll, int> pli;

const int MAXN = 1e5;
const int inf = 1e6;
int t, n;
pii points[2*MAXN];
int cost[MAXN];
vector<int> snodes;
vector<int> enodes;
int xsort[2*MAXN];
int ysort[2*MAXN];
int xinv[2*MAXN];
int yinv[2*MAXN];
ll dist[2*MAXN];

struct compx {
	bool operator()(int a, int b) {
		pii compa = pii(-points[a].first, points[a].second);
		pii compb = pii(-points[b].first, points[b].second);
		return compa == compb ? (b & 1) : compa < compb;
	}
} compx;

struct compy {
	bool operator()(int a, int b) {
		pii compa = pii(points[a].second, -points[a].first);
		pii compb = pii(points[b].second, -points[b].first);
		return compa == compb ? (b & 1) : compa < compb;
	}
} compy;

class stree {
public:
	int lp, rp;
	stree *l = nullptr;
	stree *r = nullptr;
	int mn; // min by y
	stree(int lv, int rv) {
		lp = lv;
		rp = rv;
		if (lp < rp) {
			int mid = (lp+rp)/2;
			l = new stree(lp, mid);
			r = new stree(mid+1, rp);
			mn = min(l->mn, r->mn);
		}
		else mn = yinv[xsort[lp]];
	}
	int get_mn(int lv, int rv) { // returns position of element in ysort/2
		if (lp > rv || rp < lv) return inf;
		if (lp >= lv && rp <= rv) return mn;
		return min(l->get_mn(lv, rv), r->get_mn(lv, rv));
	}
	void del(int p) { // position of element in xsort
		if (lp > p || rp < p) return;
		if (lp == rp) {
			mn = inf;
			return;
		}
		l->del(p);
		r->del(p);
		mn = min(l->mn, r->mn);
	}
};

void crash(bool b) {
	int a;
	while (!b) {
		a++;
	}
}

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	cin >> t >> n;
	for (int i = 0; i < n; i++) {
		int x, y1, y2;
		cin >> x >> y1 >> y2 >> cost[i];
		if (y1 == 1) snodes.push_back(i);
		if (y2 == t) enodes.push_back(i);
		points[2*i] = pii(x-y1, x+y1);
		points[2*i+1] = pii(x-y2-1, x+y2+1);
	}
	iota(xsort, xsort+2*n, 0);
	iota(ysort, ysort+2*n, 0);
	sort(xsort, xsort+2*n, compx);
	sort(ysort, ysort+2*n, compy);
	for (int i = 0; i < 2*n; i++) {
		xinv[xsort[i]] = i;
		yinv[ysort[i]] = i;
	}
	priority_queue<pli, vector<pli>, greater<pli>> pq;
	stree *tree = new stree(0, 2*n-1);
	fill(dist, dist+2*n, -1);
	for (int v: snodes) {
		dist[v] = cost[v];
		pq.push(pli(cost[v], v));
		tree->del(xinv[2*v]);
		tree->del(xinv[2*v+1]);
	}
	while (!pq.empty()) {
		pli tp = pq.top();
		pq.pop();
		crash(tp.second < n);
		if (tp.first > dist[tp.second]) continue;
		int xpos = xinv[2*tp.second+1]-1;
		int ypos = yinv[2*tp.second+1]-1;
		crash(xpos >= 0);
		crash(ypos >= 0);
		int curv;
		while ((curv = tree->get_mn(0, xpos)) <= ypos) {
			curv = ysort[curv];
			crash(curv % 2 == 0);
			curv /= 2;
			tree->del(xinv[2*curv]);
			tree->del(xinv[2*curv+1]);
			dist[curv] = dist[tp.second]+cost[curv];
			pq.push(pli(dist[curv], curv));
		}
	}
	ll ans = -1;
	for (int v: enodes) {
		if ((dist[v] != -1) && (ans == -1 || dist[v] < ans)) ans = dist[v];
	}
	cout << ans << '\n';
	crash(ans != -1);
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 25720 KB Output is correct
2 Correct 128 ms 25748 KB Output is correct
3 Runtime error 37 ms 8176 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 6 ms 1620 KB Output is correct
21 Correct 7 ms 1748 KB Output is correct
22 Correct 7 ms 1620 KB Output is correct
23 Correct 10 ms 1620 KB Output is correct
24 Correct 10 ms 1748 KB Output is correct
25 Correct 10 ms 1588 KB Output is correct
26 Correct 7 ms 1620 KB Output is correct
27 Correct 6 ms 1620 KB Output is correct
28 Correct 9 ms 1696 KB Output is correct
29 Correct 7 ms 1560 KB Output is correct
30 Correct 6 ms 1620 KB Output is correct
31 Correct 4 ms 1620 KB Output is correct
32 Correct 10 ms 1748 KB Output is correct
33 Correct 8 ms 1816 KB Output is correct
34 Correct 7 ms 1620 KB Output is correct
35 Correct 8 ms 1748 KB Output is correct
36 Correct 8 ms 1748 KB Output is correct
37 Correct 8 ms 1644 KB Output is correct

Subtask #4
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 25720 KB Output is correct
2 Correct 128 ms 25748 KB Output is correct
3 Runtime error 37 ms 8176 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -