oj.uz

Submission #292901

# Submission time Handle Problem Language Result Execution time Memory
292901 2020-09-07T14:41:01 Z miss_robot Sky Walking (IOI19_walk) C++14
24 / 100
 2867 ms 1048576 KB 
#include <bits/stdc++.h>
#include "walk.h"

#pragma GCC optimize("O3")
#define ll long long

using namespace std;

const int N = 100000;
const ll INF = numeric_limits<ll>::max()/4;
int n, m, s, e;
int x[N], h[N], l[N], r[N], y[N];

ll st1(){
	int c = n;
	vector< pair<int, int> > last(n, {-1, -1});
	vector< vector< pair<int, ll> > > g(c);
	vector< tuple<int, int, int> > sky(m);
	for(int i = 0; i < m; i++) sky[i] = {y[i], l[i], r[i]};
	sort(sky.rbegin(), sky.rend());
	set<int> building;
	vector< pair<int, int> > build(n);
	for(int i = 0; i < n; i++) build[i] = {h[i], i};
	sort(build.begin(), build.end());
	for(int i = 0; i < m; i++){
		while(!build.empty() && build.back().first >= get<0>(sky[i]))
			building.insert(build.back().second), build.pop_back();
		auto it = building.lower_bound(get<1>(sky[i]));
		int prev = -1, ind;
		while(it != building.end() && *it <= get<2>(sky[i])){
			int pos = *it, hi = get<0>(sky[i]);
			it++;
			g.resize(c+1);
			if(last[pos].first != -1){
				g[last[pos].first].push_back({c, last[pos].second-hi});
				g[c].push_back({last[pos].first, last[pos].second-hi});
			}
			last[pos] = {c, hi};
			if(prev != -1){
				g[ind].push_back({c, x[pos]-x[prev]});
				g[c].push_back({ind, x[pos]-x[prev]});
			}
			prev = pos, ind = c;
			c++;
		}
	}
	for(int i = 0; i < n; i++){
		if(last[i].first != -1){
			g[i].push_back({last[i].first, last[i].second});
			g[last[i].first].push_back({i, last[i].second});
		}
	}
	vector<ll> dis(c, INF);
	vector<int> vis(c);
	priority_queue< pair<ll, int>, vector< pair<ll, int> >, greater< pair<ll, int> > > q;
	dis[s] = 0;
	q.push({0, s});
	while(!q.empty()){
		int u = q.top().second, v;
		ll w;
		q.pop();
		if(vis[u]) continue;
		vis[u] = 1;
		if(u == e) return dis[u];
		for(auto &t : g[u]){
			tie(v, w) = t;
			if(dis[v] > dis[u]+w){
				dis[v] = dis[u]+w;
				q.push({dis[v], v});
			}
		}
	}
	return -1;
}

void wrt(vector<int>& X, vector<int>& H, vector<int>& L, vector<int>& R, vector<int>& Y, int S, int G){
	for(int i = 0; i < n; i++) x[i] = X[i], h[i] = H[i];
	for(int i = 0; i < m; i++) l[i] = L[i], r[i] = R[i], y[i] = Y[i];
	s = S, e = G;
}

ll min_distance(vector<int> x, vector<int> h, vector<int> l, vector<int> r, vector<int> y, int s, int g){
	n = x.size(), m = y.size();
	wrt(x, h, l, r, y, s, g);
	return st1();
}

Subtask #1
10.0 / 10.0

# 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 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 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 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 0 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 384 KB Output is correct

Subtask #2
14.0 / 14.0

# 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 375 ms 85864 KB Output is correct
4 Correct 897 ms 108060 KB Output is correct
5 Correct 668 ms 90124 KB Output is correct
6 Correct 641 ms 81352 KB Output is correct
7 Correct 538 ms 90180 KB Output is correct
8 Correct 537 ms 110824 KB Output is correct
9 Correct 706 ms 88380 KB Output is correct
10 Correct 1119 ms 137320 KB Output is correct
11 Correct 408 ms 53300 KB Output is correct
12 Correct 452 ms 45052 KB Output is correct
13 Correct 1010 ms 121828 KB Output is correct
14 Correct 314 ms 42796 KB Output is correct
15 Correct 266 ms 44052 KB Output is correct
16 Correct 238 ms 43908 KB Output is correct
17 Correct 241 ms 42448 KB Output is correct
18 Correct 171 ms 41340 KB Output is correct
19 Correct 11 ms 2460 KB Output is correct
20 Correct 113 ms 22084 KB Output is correct
21 Correct 195 ms 40408 KB Output is correct
22 Correct 205 ms 43668 KB Output is correct
23 Correct 287 ms 52632 KB Output is correct
24 Correct 227 ms 43404 KB Output is correct
25 Correct 250 ms 42612 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 16456 KB Output is correct
2 Correct 2867 ms 587600 KB Output is correct
3 Runtime error 2695 ms 1048576 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 16456 KB Output is correct
2 Correct 2867 ms 587600 KB Output is correct
3 Runtime error 2695 ms 1048576 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# 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 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 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 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 0 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 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 375 ms 85864 KB Output is correct
21 Correct 897 ms 108060 KB Output is correct
22 Correct 668 ms 90124 KB Output is correct
23 Correct 641 ms 81352 KB Output is correct
24 Correct 538 ms 90180 KB Output is correct
25 Correct 537 ms 110824 KB Output is correct
26 Correct 706 ms 88380 KB Output is correct
27 Correct 1119 ms 137320 KB Output is correct
28 Correct 408 ms 53300 KB Output is correct
29 Correct 452 ms 45052 KB Output is correct
30 Correct 1010 ms 121828 KB Output is correct
31 Correct 314 ms 42796 KB Output is correct
32 Correct 266 ms 44052 KB Output is correct
33 Correct 238 ms 43908 KB Output is correct
34 Correct 241 ms 42448 KB Output is correct
35 Correct 171 ms 41340 KB Output is correct
36 Correct 11 ms 2460 KB Output is correct
37 Correct 113 ms 22084 KB Output is correct
38 Correct 195 ms 40408 KB Output is correct
39 Correct 205 ms 43668 KB Output is correct
40 Correct 287 ms 52632 KB Output is correct
41 Correct 227 ms 43404 KB Output is correct
42 Correct 250 ms 42612 KB Output is correct
43 Correct 78 ms 16456 KB Output is correct
44 Correct 2867 ms 587600 KB Output is correct
45 Runtime error 2695 ms 1048576 KB Execution killed with signal 9
46 Halted 0 ms 0 KB -