oj.uz

답안 #795631

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
795631 2023-07-27T11:51:22 Z MODDI Evacuation plan (IZhO18_plan) C++14
100 / 100
 334 ms 33068 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
typedef long long ll;
typedef pair<long long, long long> pll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<long long> vl;
int n, m;
vector<pii> G[100100];
ll dist[100100];
pair<int, ll> p[100100];
struct DSU{
	vector<pair<int, ll>> p;
	vi sz;
	void init(int n){
		for(int i = 0; i < n; i++){
			p.pb({i,0});
			sz.pb(1);
		}
	}
	int get_size(int v){
		return sz[v];
	}
	ll get_path(int v){
		return p[v].second;
	}
	int find_parent(int v){
		while(v != p[v].first)
			v = p[v].first;
		return v;
	}
	int get_parent(int v){
		return p[v].first;
	}
	void merge(int a, int b, ll v)
	{
		a = find_parent(a);
		b = find_parent(b);
		if(a != b){
			if(sz[a] > sz[b])	swap(a,b);
			p[a].first = b;
			p[a].second = v;
			sz[b] += sz[a];
		}
	}
};
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cin>>n>>m;
	for(int i = 0; i < m; i++){
		int a, b, w;
		cin>>a>>b>>w;
		a--; b--;
		G[a].pb({b,w});
		G[b].pb({a,w});
	}
	for(int i = 0; i < n; i++)	dist[i] = 1e18;
	priority_queue<pair<ll,int>,vector<pair<ll,int>>,greater<pair<ll,int>>> pq;
	int k;
	cin>>k;
	for(int i = 0; i < k; i++){
		int g; cin>>g;
		g--;
		dist[g] = 0;
		pq.push(mp(dist[g], g));
	}
	while(pq.size()){
		pair<ll,int> cur= pq.top();
		pq.pop();
		if(cur.first!=dist[cur.second]) continue;
		for(auto e : G[cur.second]){
			if(dist[e.first]>dist[cur.second]+e.second){
				dist[e.first] = dist[cur.second]+e.second;
				pq.push({dist[e.first],e.first});
			}
		}
	}
	DSU dsu;
	dsu.init(n);
	vi order(n);
	for(int i = 0; i < n; i++) order[i] = i;
	sort(order.begin(),order.end(),[&](const int a,const int b){return dist[a]>dist[b];});
	for(auto i : order){
		for(auto e :	G[i]){
			if(dist[e.first]<dist[i] || (dist[e.first]==dist[i] && e.first<i)) continue;
			dsu.merge(i,e.first,dist[i]);
		}
	}
	int q;
	cin>>q;
	while(q--){
		int s, t; cin>>s>>t;
		s--; t--;
		ll ans = 1e18;
		while(s != t){
			if(dsu.get_size(s) > dsu.get_size(t))	swap(s,t);
			ans = min(ans, dsu.get_path(s));
			s = dsu.get_parent(s);
		}	
		cout<<ans<<"\n";
	}
	return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2736 KB Output is correct
3 Correct 2 ms 2772 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2656 KB Output is correct
9 Correct 2 ms 2772 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 2 ms 2772 KB Output is correct
13 Correct 2 ms 2772 KB Output is correct
14 Correct 2 ms 2696 KB Output is correct
15 Correct 2 ms 2772 KB Output is correct

Subtask #2
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2736 KB Output is correct
3 Correct 2 ms 2772 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2656 KB Output is correct
9 Correct 2 ms 2772 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 2 ms 2772 KB Output is correct
13 Correct 2 ms 2772 KB Output is correct
14 Correct 2 ms 2696 KB Output is correct
15 Correct 2 ms 2772 KB Output is correct
16 Correct 73 ms 12448 KB Output is correct
17 Correct 235 ms 32828 KB Output is correct
18 Correct 18 ms 5336 KB Output is correct
19 Correct 67 ms 15844 KB Output is correct
20 Correct 246 ms 32828 KB Output is correct
21 Correct 118 ms 19564 KB Output is correct
22 Correct 67 ms 12772 KB Output is correct
23 Correct 235 ms 32732 KB Output is correct
24 Correct 263 ms 33068 KB Output is correct
25 Correct 244 ms 32792 KB Output is correct
26 Correct 69 ms 15588 KB Output is correct
27 Correct 67 ms 15660 KB Output is correct
28 Correct 74 ms 15608 KB Output is correct
29 Correct 72 ms 15720 KB Output is correct
30 Correct 70 ms 15844 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2684 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2680 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct

Subtask #4
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 104 ms 17028 KB Output is correct
2 Correct 213 ms 31156 KB Output is correct
3 Correct 234 ms 31140 KB Output is correct
4 Correct 46 ms 10716 KB Output is correct
5 Correct 211 ms 31220 KB Output is correct
6 Correct 233 ms 31208 KB Output is correct
7 Correct 241 ms 31144 KB Output is correct
8 Correct 218 ms 31228 KB Output is correct
9 Correct 213 ms 31060 KB Output is correct
10 Correct 232 ms 31100 KB Output is correct
11 Correct 220 ms 31104 KB Output is correct
12 Correct 254 ms 31180 KB Output is correct
13 Correct 244 ms 31148 KB Output is correct
14 Correct 228 ms 31248 KB Output is correct
15 Correct 215 ms 31284 KB Output is correct
16 Correct 230 ms 31212 KB Output is correct
17 Correct 221 ms 31116 KB Output is correct
18 Correct 246 ms 31224 KB Output is correct
19 Correct 47 ms 10828 KB Output is correct
20 Correct 214 ms 31080 KB Output is correct
21 Correct 198 ms 31012 KB Output is correct
22 Correct 49 ms 14160 KB Output is correct
23 Correct 47 ms 11208 KB Output is correct
24 Correct 57 ms 14204 KB Output is correct
25 Correct 48 ms 14108 KB Output is correct
26 Correct 50 ms 11392 KB Output is correct
27 Correct 38 ms 10776 KB Output is correct
28 Correct 48 ms 14148 KB Output is correct
29 Correct 39 ms 10736 KB Output is correct
30 Correct 49 ms 14204 KB Output is correct
31 Correct 38 ms 10688 KB Output is correct

Subtask #5
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2736 KB Output is correct
3 Correct 2 ms 2772 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2656 KB Output is correct
9 Correct 2 ms 2772 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 2 ms 2772 KB Output is correct
13 Correct 2 ms 2772 KB Output is correct
14 Correct 2 ms 2696 KB Output is correct
15 Correct 2 ms 2772 KB Output is correct
16 Correct 73 ms 12448 KB Output is correct
17 Correct 235 ms 32828 KB Output is correct
18 Correct 18 ms 5336 KB Output is correct
19 Correct 67 ms 15844 KB Output is correct
20 Correct 246 ms 32828 KB Output is correct
21 Correct 118 ms 19564 KB Output is correct
22 Correct 67 ms 12772 KB Output is correct
23 Correct 235 ms 32732 KB Output is correct
24 Correct 263 ms 33068 KB Output is correct
25 Correct 244 ms 32792 KB Output is correct
26 Correct 69 ms 15588 KB Output is correct
27 Correct 67 ms 15660 KB Output is correct
28 Correct 74 ms 15608 KB Output is correct
29 Correct 72 ms 15720 KB Output is correct
30 Correct 70 ms 15844 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 1 ms 2644 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 ms 2684 KB Output is correct
35 Correct 1 ms 2644 KB Output is correct
36 Correct 1 ms 2644 KB Output is correct
37 Correct 1 ms 2644 KB Output is correct
38 Correct 1 ms 2680 KB Output is correct
39 Correct 1 ms 2644 KB Output is correct
40 Correct 1 ms 2644 KB Output is correct
41 Correct 104 ms 17028 KB Output is correct
42 Correct 213 ms 31156 KB Output is correct
43 Correct 234 ms 31140 KB Output is correct
44 Correct 46 ms 10716 KB Output is correct
45 Correct 211 ms 31220 KB Output is correct
46 Correct 233 ms 31208 KB Output is correct
47 Correct 241 ms 31144 KB Output is correct
48 Correct 218 ms 31228 KB Output is correct
49 Correct 213 ms 31060 KB Output is correct
50 Correct 232 ms 31100 KB Output is correct
51 Correct 220 ms 31104 KB Output is correct
52 Correct 254 ms 31180 KB Output is correct
53 Correct 244 ms 31148 KB Output is correct
54 Correct 228 ms 31248 KB Output is correct
55 Correct 215 ms 31284 KB Output is correct
56 Correct 230 ms 31212 KB Output is correct
57 Correct 221 ms 31116 KB Output is correct
58 Correct 246 ms 31224 KB Output is correct
59 Correct 47 ms 10828 KB Output is correct
60 Correct 214 ms 31080 KB Output is correct
61 Correct 198 ms 31012 KB Output is correct
62 Correct 49 ms 14160 KB Output is correct
63 Correct 47 ms 11208 KB Output is correct
64 Correct 57 ms 14204 KB Output is correct
65 Correct 48 ms 14108 KB Output is correct
66 Correct 50 ms 11392 KB Output is correct
67 Correct 38 ms 10776 KB Output is correct
68 Correct 48 ms 14148 KB Output is correct
69 Correct 39 ms 10736 KB Output is correct
70 Correct 49 ms 14204 KB Output is correct
71 Correct 38 ms 10688 KB Output is correct
72 Correct 119 ms 18292 KB Output is correct
73 Correct 234 ms 32808 KB Output is correct
74 Correct 231 ms 32832 KB Output is correct
75 Correct 279 ms 32816 KB Output is correct
76 Correct 254 ms 32792 KB Output is correct
77 Correct 268 ms 32768 KB Output is correct
78 Correct 334 ms 32728 KB Output is correct
79 Correct 282 ms 32776 KB Output is correct
80 Correct 258 ms 32852 KB Output is correct
81 Correct 238 ms 32820 KB Output is correct
82 Correct 252 ms 32900 KB Output is correct
83 Correct 243 ms 32780 KB Output is correct
84 Correct 307 ms 32764 KB Output is correct
85 Correct 302 ms 32920 KB Output is correct
86 Correct 303 ms 32792 KB Output is correct
87 Correct 318 ms 32768 KB Output is correct
88 Correct 295 ms 32812 KB Output is correct
89 Correct 70 ms 12804 KB Output is correct
90 Correct 267 ms 32776 KB Output is correct
91 Correct 241 ms 32444 KB Output is correct
92 Correct 71 ms 15652 KB Output is correct
93 Correct 73 ms 13136 KB Output is correct
94 Correct 79 ms 15584 KB Output is correct
95 Correct 81 ms 15728 KB Output is correct
96 Correct 76 ms 12764 KB Output is correct
97 Correct 59 ms 12472 KB Output is correct
98 Correct 67 ms 15608 KB Output is correct
99 Correct 61 ms 12436 KB Output is correct
100 Correct 84 ms 15712 KB Output is correct