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Submission #886211

# Submission time Handle Problem Language Result Execution time Memory
886211 2023-12-11T15:13:34 Z vjudge1 Airplane (NOI23_airplane) C++11
100 / 100
 477 ms 22592 KB 
#include <bits/stdc++.h>
#define pb push_back
using namespace std;

int main(){
	int n, m;
	cin >> n >> m;
	vector<int> a(n);
	for(int i = 0; i < n; i++){
		cin >> a[i];
	}

	vector<vector<int>> G(n);

	for(int i = 0; i < m; i++){
		int a, b;
		cin >> a >> b;
		--a, --b;
		G[a].pb(b);
		G[b].pb(a);
	}

	// time, minalt, v
	priority_queue<array<int, 3>, vector<array<int, 3>>, greater<array<int, 3>>> q;
	vector<int> tstart(n), salt(n);
	q.push({0, 0, 0});

	vector<bool> vis(n);
	vis[0] = 1;

	int ans = INT_MAX;

	while(!q.empty()){
		auto [time, minalt, u] = q.top(); q.pop();
		tstart[u] = time;
		salt[u] = minalt;
		for(int v : G[u]){
			if(vis[v]) continue;
			vis[v] = 1;
			if(time < a[v] - 1){
				q.push({a[v], a[v], v}); // kesinlikle v icin minimum sure 
			} else{
				q.push({time+1, max(max(minalt-1, a[v]), 0), v});
			}
		}
	}

	q.push({0, 0, n-1});
	vis.assign(n, 0);
	vector<int> tend(n), ealt(n);


	function<int(int)> altdif = [&](int u){
		int ret = min(abs(tstart[u] - ealt[u]), abs(tend[u] - salt[u]));
		if(salt[u] <= ealt[u] && ealt[u] <= tstart[u]) ret = 0;
		if(salt[u] <= tend[u] && tend[u] <= tstart[u]) ret = 0;
		if(ealt[u] <= salt[u] && salt[u] <= tend[u]) ret = 0;
		if(ealt[u] <= tstart[u] && tstart[u] <= tend[u]) ret = 0;
		return ret;
	};

	
	while(!q.empty()){
		auto [time, minalt, u] = q.top(); q.pop();
		tend[u] = time;
		ealt[u] = minalt;
		ans = min(ans, tend[u] + tstart[u] + altdif(u));
		for(int v : G[u]){
			if(vis[v]) continue;
			vis[v] = 1;
			if(time < a[v] - 1){
				q.push({a[v], a[v], v}); // kesinlikle v icin minimum sure 
			} else{
				q.push({time+1, max(max(minalt-1, a[v]), 0), v});
			}
		}
	}

	cout << ans << endl;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:34:8: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   34 |   auto [time, minalt, u] = q.top(); q.pop();
      |        ^
Main.cpp:64:8: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   64 |   auto [time, minalt, u] = q.top(); q.pop();
      |        ^

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 133 ms 15284 KB Output is correct
3 Correct 142 ms 15248 KB Output is correct
4 Correct 147 ms 15292 KB Output is correct
5 Correct 156 ms 15296 KB Output is correct
6 Correct 161 ms 15284 KB Output is correct
7 Correct 175 ms 15148 KB Output is correct
8 Correct 1 ms 600 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 2 ms 604 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 2 ms 604 KB Output is correct
9 Correct 2 ms 856 KB Output is correct
10 Correct 2 ms 604 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 3 ms 600 KB Output is correct
13 Correct 2 ms 600 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 604 KB Output is correct
16 Correct 3 ms 604 KB Output is correct
17 Correct 3 ms 604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 2 ms 604 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 2 ms 604 KB Output is correct
9 Correct 2 ms 856 KB Output is correct
10 Correct 2 ms 604 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 3 ms 600 KB Output is correct
13 Correct 2 ms 600 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 604 KB Output is correct
16 Correct 3 ms 604 KB Output is correct
17 Correct 3 ms 604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 2 ms 600 KB Output is correct
20 Correct 2 ms 604 KB Output is correct
21 Correct 2 ms 604 KB Output is correct
22 Correct 2 ms 476 KB Output is correct
23 Correct 2 ms 604 KB Output is correct
24 Correct 2 ms 604 KB Output is correct
25 Correct 2 ms 604 KB Output is correct
26 Correct 3 ms 604 KB Output is correct
27 Correct 3 ms 604 KB Output is correct
28 Correct 3 ms 612 KB Output is correct
29 Correct 3 ms 604 KB Output is correct
30 Correct 3 ms 600 KB Output is correct

Subtask #4
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 133 ms 15284 KB Output is correct
3 Correct 142 ms 15248 KB Output is correct
4 Correct 147 ms 15292 KB Output is correct
5 Correct 156 ms 15296 KB Output is correct
6 Correct 161 ms 15284 KB Output is correct
7 Correct 175 ms 15148 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 2 ms 604 KB Output is correct
17 Correct 2 ms 856 KB Output is correct
18 Correct 2 ms 604 KB Output is correct
19 Correct 2 ms 604 KB Output is correct
20 Correct 3 ms 600 KB Output is correct
21 Correct 2 ms 600 KB Output is correct
22 Correct 2 ms 604 KB Output is correct
23 Correct 3 ms 604 KB Output is correct
24 Correct 3 ms 604 KB Output is correct
25 Correct 3 ms 604 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 2 ms 600 KB Output is correct
28 Correct 2 ms 604 KB Output is correct
29 Correct 2 ms 604 KB Output is correct
30 Correct 2 ms 476 KB Output is correct
31 Correct 2 ms 604 KB Output is correct
32 Correct 2 ms 604 KB Output is correct
33 Correct 2 ms 604 KB Output is correct
34 Correct 3 ms 604 KB Output is correct
35 Correct 3 ms 604 KB Output is correct
36 Correct 3 ms 612 KB Output is correct
37 Correct 3 ms 604 KB Output is correct
38 Correct 3 ms 600 KB Output is correct
39 Correct 275 ms 17748 KB Output is correct
40 Correct 198 ms 17656 KB Output is correct
41 Correct 191 ms 17492 KB Output is correct
42 Correct 214 ms 17536 KB Output is correct
43 Correct 188 ms 17492 KB Output is correct
44 Correct 200 ms 17604 KB Output is correct
45 Correct 216 ms 17700 KB Output is correct
46 Correct 234 ms 17708 KB Output is correct
47 Correct 211 ms 17504 KB Output is correct
48 Correct 188 ms 17488 KB Output is correct
49 Correct 292 ms 17844 KB Output is correct
50 Correct 296 ms 17488 KB Output is correct
51 Correct 316 ms 17808 KB Output is correct
52 Correct 406 ms 20052 KB Output is correct
53 Correct 346 ms 19356 KB Output is correct
54 Correct 370 ms 19480 KB Output is correct
55 Correct 367 ms 19828 KB Output is correct
56 Correct 471 ms 21704 KB Output is correct
57 Correct 472 ms 21724 KB Output is correct
58 Correct 477 ms 22388 KB Output is correct
59 Correct 455 ms 22292 KB Output is correct
60 Correct 442 ms 22592 KB Output is correct
61 Correct 398 ms 21964 KB Output is correct
62 Correct 444 ms 21636 KB Output is correct
63 Correct 399 ms 21636 KB Output is correct
64 Correct 374 ms 21704 KB Output is correct
65 Correct 372 ms 21840 KB Output is correct
66 Correct 414 ms 21700 KB Output is correct
67 Correct 430 ms 21960 KB Output is correct