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Submission #287831

# Submission time Handle Problem Language Result Execution time Memory
287831 2020-09-01T03:46:57 Z nandonathaniel Evacuation plan (IZhO18_plan) C++14
100 / 100
 1106 ms 55536 KB 
#include<bits/stdc++.h>
using namespace std;
const int MAXN=100005,INF=1e9;
typedef pair<int,int> pii;
vector<pii> adj[MAXN],query[MAXN];
int dist[MAXN],ans[MAXN],par[MAXN],a[MAXN],b[MAXN],lo[MAXN],hi[MAXN];
bool udah[MAXN];
pair<int,pii> arr[5*MAXN];
vector<int> mid[5*MAXN];

int find(int x){
	if(par[x]==x)return par[x];
	return par[x]=find(par[x]);
}

void join(int a,int b){
	int ortua=find(a),ortub=find(b);
	par[ortua]=ortub;
}

int main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
	int n,m,u,v,w,k,q;
	cin >> n >> m;
	for(int i=1;i<=m;i++){
		cin >> u >> v >> w;
		adj[u].push_back({v,w});
		adj[v].push_back({u,w});
	}
	cin >> k;
	for(int i=1;i<=n;i++){
		dist[i]=INF;
	}
	priority_queue<pii,vector<pii>,greater<pii> > PQ;
	for(int i=1;i<=k;i++){
		cin >> u;
		dist[u]=0;
		PQ.push({0,u});
	}
	while(!PQ.empty()){
		pii now=PQ.top();
		PQ.pop();
		if(dist[now.second]<now.first)continue;
		for(auto nxt : adj[now.second]){
			if(dist[now.second]+nxt.second<dist[nxt.first]){
				dist[nxt.first]=dist[now.second]+nxt.second;
				PQ.push({dist[nxt.first],nxt.first});
			}
		}
	}
	int no=0;
	for(int i=1;i<=n;i++){
		for(auto nxt : adj[i]){
			if(i>nxt.first)continue;
			no++;
			arr[no]={min(dist[i],dist[nxt.first]),{i,nxt.first}};
		}
	}
	sort(arr+1,arr+m+1);
	cin >> q;
	for(int i=1;i<=q;i++){
		cin >> a[i] >> b[i];
		lo[i]=1;hi[i]=m;
		mid[(lo[i]+hi[i])/2].push_back(i);
	}
	bool masih=1;
	while(masih){
		masih=0;
		for(int i=1;i<=n;i++)par[i]=i;
		for(int i=m;i>=1;i--){
			join(arr[i].second.first,arr[i].second.second);
			while(!mid[i].empty()){
				int last=mid[i].back();
				mid[i].pop_back();
				if(find(a[last])==find(b[last])){
					lo[last]=i+1;
					ans[last]=arr[i].first;
				}
				else hi[last]=i-1;
				if(lo[last]<=hi[last]){
					mid[(lo[last]+hi[last])/2].push_back(last);
					masih=1;
				}
			}
		}
	}
	for(int i=1;i<=q;i++)cout << ans[i] << '\n';
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 16768 KB Output is correct
2 Correct 13 ms 17024 KB Output is correct
3 Correct 13 ms 17024 KB Output is correct
4 Correct 12 ms 16768 KB Output is correct
5 Correct 13 ms 17024 KB Output is correct
6 Correct 14 ms 17024 KB Output is correct
7 Correct 12 ms 16768 KB Output is correct
8 Correct 12 ms 16768 KB Output is correct
9 Correct 14 ms 17024 KB Output is correct
10 Correct 13 ms 17024 KB Output is correct
11 Correct 15 ms 17024 KB Output is correct
12 Correct 13 ms 17024 KB Output is correct
13 Correct 13 ms 17024 KB Output is correct
14 Correct 13 ms 17024 KB Output is correct
15 Correct 14 ms 17024 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 16768 KB Output is correct
2 Correct 13 ms 17024 KB Output is correct
3 Correct 13 ms 17024 KB Output is correct
4 Correct 12 ms 16768 KB Output is correct
5 Correct 13 ms 17024 KB Output is correct
6 Correct 14 ms 17024 KB Output is correct
7 Correct 12 ms 16768 KB Output is correct
8 Correct 12 ms 16768 KB Output is correct
9 Correct 14 ms 17024 KB Output is correct
10 Correct 13 ms 17024 KB Output is correct
11 Correct 15 ms 17024 KB Output is correct
12 Correct 13 ms 17024 KB Output is correct
13 Correct 13 ms 17024 KB Output is correct
14 Correct 13 ms 17024 KB Output is correct
15 Correct 14 ms 17024 KB Output is correct
16 Correct 363 ms 36632 KB Output is correct
17 Correct 1077 ms 55148 KB Output is correct
18 Correct 75 ms 20856 KB Output is correct
19 Correct 246 ms 38512 KB Output is correct
20 Correct 1106 ms 55196 KB Output is correct
21 Correct 583 ms 42736 KB Output is correct
22 Correct 253 ms 37080 KB Output is correct
23 Correct 1089 ms 55152 KB Output is correct
24 Correct 1101 ms 55280 KB Output is correct
25 Correct 1065 ms 55536 KB Output is correct
26 Correct 240 ms 38376 KB Output is correct
27 Correct 240 ms 38636 KB Output is correct
28 Correct 251 ms 38376 KB Output is correct
29 Correct 242 ms 38376 KB Output is correct
30 Correct 240 ms 38508 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 16768 KB Output is correct
2 Correct 12 ms 16768 KB Output is correct
3 Correct 12 ms 16768 KB Output is correct
4 Correct 12 ms 16768 KB Output is correct
5 Correct 12 ms 16768 KB Output is correct
6 Correct 12 ms 16768 KB Output is correct
7 Correct 12 ms 16768 KB Output is correct
8 Correct 12 ms 16768 KB Output is correct
9 Correct 12 ms 16768 KB Output is correct
10 Correct 12 ms 16768 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 354 ms 29148 KB Output is correct
2 Correct 771 ms 40688 KB Output is correct
3 Correct 698 ms 40816 KB Output is correct
4 Correct 84 ms 23928 KB Output is correct
5 Correct 707 ms 40768 KB Output is correct
6 Correct 717 ms 40688 KB Output is correct
7 Correct 711 ms 40688 KB Output is correct
8 Correct 707 ms 40664 KB Output is correct
9 Correct 648 ms 40816 KB Output is correct
10 Correct 723 ms 40684 KB Output is correct
11 Correct 635 ms 40684 KB Output is correct
12 Correct 633 ms 40692 KB Output is correct
13 Correct 651 ms 40684 KB Output is correct
14 Correct 751 ms 40812 KB Output is correct
15 Correct 685 ms 40808 KB Output is correct
16 Correct 745 ms 40688 KB Output is correct
17 Correct 643 ms 40556 KB Output is correct
18 Correct 615 ms 40560 KB Output is correct
19 Correct 102 ms 23928 KB Output is correct
20 Correct 733 ms 40560 KB Output is correct
21 Correct 587 ms 40440 KB Output is correct
22 Correct 111 ms 26088 KB Output is correct
23 Correct 111 ms 24056 KB Output is correct
24 Correct 114 ms 25320 KB Output is correct
25 Correct 111 ms 25192 KB Output is correct
26 Correct 108 ms 24368 KB Output is correct
27 Correct 83 ms 23952 KB Output is correct
28 Correct 108 ms 25344 KB Output is correct
29 Correct 83 ms 24056 KB Output is correct
30 Correct 104 ms 25192 KB Output is correct
31 Correct 81 ms 23928 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 16768 KB Output is correct
2 Correct 13 ms 17024 KB Output is correct
3 Correct 13 ms 17024 KB Output is correct
4 Correct 12 ms 16768 KB Output is correct
5 Correct 13 ms 17024 KB Output is correct
6 Correct 14 ms 17024 KB Output is correct
7 Correct 12 ms 16768 KB Output is correct
8 Correct 12 ms 16768 KB Output is correct
9 Correct 14 ms 17024 KB Output is correct
10 Correct 13 ms 17024 KB Output is correct
11 Correct 15 ms 17024 KB Output is correct
12 Correct 13 ms 17024 KB Output is correct
13 Correct 13 ms 17024 KB Output is correct
14 Correct 13 ms 17024 KB Output is correct
15 Correct 14 ms 17024 KB Output is correct
16 Correct 363 ms 36632 KB Output is correct
17 Correct 1077 ms 55148 KB Output is correct
18 Correct 75 ms 20856 KB Output is correct
19 Correct 246 ms 38512 KB Output is correct
20 Correct 1106 ms 55196 KB Output is correct
21 Correct 583 ms 42736 KB Output is correct
22 Correct 253 ms 37080 KB Output is correct
23 Correct 1089 ms 55152 KB Output is correct
24 Correct 1101 ms 55280 KB Output is correct
25 Correct 1065 ms 55536 KB Output is correct
26 Correct 240 ms 38376 KB Output is correct
27 Correct 240 ms 38636 KB Output is correct
28 Correct 251 ms 38376 KB Output is correct
29 Correct 242 ms 38376 KB Output is correct
30 Correct 240 ms 38508 KB Output is correct
31 Correct 12 ms 16768 KB Output is correct
32 Correct 12 ms 16768 KB Output is correct
33 Correct 12 ms 16768 KB Output is correct
34 Correct 12 ms 16768 KB Output is correct
35 Correct 12 ms 16768 KB Output is correct
36 Correct 12 ms 16768 KB Output is correct
37 Correct 12 ms 16768 KB Output is correct
38 Correct 12 ms 16768 KB Output is correct
39 Correct 12 ms 16768 KB Output is correct
40 Correct 12 ms 16768 KB Output is correct
41 Correct 354 ms 29148 KB Output is correct
42 Correct 771 ms 40688 KB Output is correct
43 Correct 698 ms 40816 KB Output is correct
44 Correct 84 ms 23928 KB Output is correct
45 Correct 707 ms 40768 KB Output is correct
46 Correct 717 ms 40688 KB Output is correct
47 Correct 711 ms 40688 KB Output is correct
48 Correct 707 ms 40664 KB Output is correct
49 Correct 648 ms 40816 KB Output is correct
50 Correct 723 ms 40684 KB Output is correct
51 Correct 635 ms 40684 KB Output is correct
52 Correct 633 ms 40692 KB Output is correct
53 Correct 651 ms 40684 KB Output is correct
54 Correct 751 ms 40812 KB Output is correct
55 Correct 685 ms 40808 KB Output is correct
56 Correct 745 ms 40688 KB Output is correct
57 Correct 643 ms 40556 KB Output is correct
58 Correct 615 ms 40560 KB Output is correct
59 Correct 102 ms 23928 KB Output is correct
60 Correct 733 ms 40560 KB Output is correct
61 Correct 587 ms 40440 KB Output is correct
62 Correct 111 ms 26088 KB Output is correct
63 Correct 111 ms 24056 KB Output is correct
64 Correct 114 ms 25320 KB Output is correct
65 Correct 111 ms 25192 KB Output is correct
66 Correct 108 ms 24368 KB Output is correct
67 Correct 83 ms 23952 KB Output is correct
68 Correct 108 ms 25344 KB Output is correct
69 Correct 83 ms 24056 KB Output is correct
70 Correct 104 ms 25192 KB Output is correct
71 Correct 81 ms 23928 KB Output is correct
72 Correct 638 ms 41588 KB Output is correct
73 Correct 1089 ms 54896 KB Output is correct
74 Correct 1074 ms 54896 KB Output is correct
75 Correct 1084 ms 54972 KB Output is correct
76 Correct 1089 ms 54896 KB Output is correct
77 Correct 1080 ms 55152 KB Output is correct
78 Correct 1095 ms 54768 KB Output is correct
79 Correct 1085 ms 55152 KB Output is correct
80 Correct 1072 ms 54960 KB Output is correct
81 Correct 1075 ms 55020 KB Output is correct
82 Correct 1077 ms 54900 KB Output is correct
83 Correct 1082 ms 54900 KB Output is correct
84 Correct 1083 ms 54896 KB Output is correct
85 Correct 1071 ms 54892 KB Output is correct
86 Correct 1042 ms 55024 KB Output is correct
87 Correct 1049 ms 54892 KB Output is correct
88 Correct 1059 ms 54768 KB Output is correct
89 Correct 301 ms 37104 KB Output is correct
90 Correct 1066 ms 54768 KB Output is correct
91 Correct 884 ms 54644 KB Output is correct
92 Correct 300 ms 38236 KB Output is correct
93 Correct 264 ms 35312 KB Output is correct
94 Correct 244 ms 37868 KB Output is correct
95 Correct 275 ms 38252 KB Output is correct
96 Correct 254 ms 33852 KB Output is correct
97 Correct 271 ms 35824 KB Output is correct
98 Correct 243 ms 38120 KB Output is correct
99 Correct 271 ms 35692 KB Output is correct
100 Correct 255 ms 38248 KB Output is correct