oj.uz

답안 #887909

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
887909 2023-12-15T13:06:21 Z pcc Evacuation plan (IZhO18_plan) C++14
100 / 100
 312 ms 37824 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>

const int inf = 1e9+10;
const int mxn = 1e5+10;
vector<pii> paths[mxn];
int dist[mxn];
vector<pii> req[mxn],v;
int dsu[mxn],sz[mxn];
bitset<mxn> active;
int ans[mxn*5];
priority_queue<pii,vector<pii>,greater<pii>> pq;
int n,m;

void DIJKSTRA(){
	while(!pq.empty()){
		auto now = pq.top();
		pq.pop();
		if(now.fs != dist[now.sc])continue;
		for(auto nxt:paths[now.sc]){
			if(dist[nxt.fs]>dist[now.sc]+nxt.sc){
				dist[nxt.fs] = now.fs+nxt.sc;
				pq.push({dist[nxt.fs],nxt.fs});
			}
		}
	}
	return;
}

int root(int k){
	return k == dsu[k]?k:dsu[k] = root(dsu[k]);
}
void onion(int a,int b,int c){
	a = root(a),b = root(b);
	if(a == b)return;
	if(req[a].size()<req[b].size()){
		swap(a,b);
	}
	while(!req[b].empty()){
		auto tmp = req[b].back();
		req[b].pop_back();
		if(root(tmp.fs) == a){
			if(ans[tmp.sc] == -1)ans[tmp.sc] = c;
		}
		else req[a].push_back(tmp);
	}
	if(sz[a]<sz[b]){
		req[a].swap(req[b]);
		swap(a,b);
	}
	dsu[b] = a;
	sz[a] += sz[b];
	return;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n>>m;
	for(int i = 0;i<m;i++){
		int a,b,c;
		cin>>a>>b>>c;
		paths[a].push_back({b,c});
		paths[b].push_back({a,c});
	}
	fill(dist,dist+n+1,inf);
	int k;
	cin>>k;
	while(k--){
		int tmp;
		cin>>tmp;
		pq.push({0,tmp});
		dist[tmp] = 0;
	}
	DIJKSTRA();
	for(int i =1;i<=n;i++)v.push_back({dist[i],i});
	sort(v.rbegin(),v.rend());

	for(int i = 1;i<=n;i++)dsu[i] = i,sz[i] = 1;
	int q;
	cin>>q;
	fill(ans,ans+q+1,-1);
	for(int i = 1;i<=q;i++){
		int a,b;
		cin>>a>>b;
		req[a].push_back({b,i});
		req[b].push_back({a,i});
	}
	for(auto &i:v){
		active[i.sc] = true;
		for(auto nxt:paths[i.sc]){
			if(active[nxt.fs])onion(nxt.fs,i.sc,i.fs);
		}
	}
	for(int i = 1;i<=q;i++)cout<<ans[i]<<'\n';
	return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8028 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 ms 8132 KB Output is correct
4 Correct 2 ms 8028 KB Output is correct
5 Correct 3 ms 8028 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8280 KB Output is correct
10 Correct 3 ms 8028 KB Output is correct
11 Correct 3 ms 8024 KB Output is correct
12 Correct 3 ms 8024 KB Output is correct
13 Correct 3 ms 8028 KB Output is correct
14 Correct 3 ms 8096 KB Output is correct
15 Correct 2 ms 8280 KB Output is correct

Subtask #2
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8028 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 ms 8132 KB Output is correct
4 Correct 2 ms 8028 KB Output is correct
5 Correct 3 ms 8028 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8280 KB Output is correct
10 Correct 3 ms 8028 KB Output is correct
11 Correct 3 ms 8024 KB Output is correct
12 Correct 3 ms 8024 KB Output is correct
13 Correct 3 ms 8028 KB Output is correct
14 Correct 3 ms 8096 KB Output is correct
15 Correct 2 ms 8280 KB Output is correct
16 Correct 99 ms 21064 KB Output is correct
17 Correct 298 ms 37520 KB Output is correct
18 Correct 20 ms 10676 KB Output is correct
19 Correct 79 ms 20944 KB Output is correct
20 Correct 262 ms 37552 KB Output is correct
21 Correct 150 ms 25956 KB Output is correct
22 Correct 90 ms 19824 KB Output is correct
23 Correct 271 ms 37604 KB Output is correct
24 Correct 312 ms 37676 KB Output is correct
25 Correct 274 ms 37708 KB Output is correct
26 Correct 106 ms 20728 KB Output is correct
27 Correct 79 ms 20676 KB Output is correct
28 Correct 81 ms 20684 KB Output is correct
29 Correct 87 ms 20680 KB Output is correct
30 Correct 80 ms 21000 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8028 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 ms 8028 KB Output is correct
4 Correct 2 ms 8028 KB Output is correct
5 Correct 2 ms 8028 KB Output is correct
6 Correct 2 ms 8024 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 2 ms 8024 KB Output is correct

Subtask #4
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 104 ms 19076 KB Output is correct
2 Correct 233 ms 32068 KB Output is correct
3 Correct 260 ms 32156 KB Output is correct
4 Correct 39 ms 13768 KB Output is correct
5 Correct 233 ms 32180 KB Output is correct
6 Correct 236 ms 32012 KB Output is correct
7 Correct 219 ms 32076 KB Output is correct
8 Correct 257 ms 32168 KB Output is correct
9 Correct 272 ms 31984 KB Output is correct
10 Correct 258 ms 32348 KB Output is correct
11 Correct 220 ms 32084 KB Output is correct
12 Correct 253 ms 32084 KB Output is correct
13 Correct 229 ms 32076 KB Output is correct
14 Correct 260 ms 32152 KB Output is correct
15 Correct 231 ms 32980 KB Output is correct
16 Correct 232 ms 32176 KB Output is correct
17 Correct 250 ms 32072 KB Output is correct
18 Correct 249 ms 32056 KB Output is correct
19 Correct 44 ms 13748 KB Output is correct
20 Correct 252 ms 32168 KB Output is correct
21 Correct 253 ms 32332 KB Output is correct
22 Correct 62 ms 15500 KB Output is correct
23 Correct 47 ms 14276 KB Output is correct
24 Correct 54 ms 15376 KB Output is correct
25 Correct 54 ms 15564 KB Output is correct
26 Correct 57 ms 14116 KB Output is correct
27 Correct 57 ms 13752 KB Output is correct
28 Correct 54 ms 15312 KB Output is correct
29 Correct 42 ms 13764 KB Output is correct
30 Correct 51 ms 15372 KB Output is correct
31 Correct 38 ms 13664 KB Output is correct

Subtask #5
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8028 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 ms 8132 KB Output is correct
4 Correct 2 ms 8028 KB Output is correct
5 Correct 3 ms 8028 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8280 KB Output is correct
10 Correct 3 ms 8028 KB Output is correct
11 Correct 3 ms 8024 KB Output is correct
12 Correct 3 ms 8024 KB Output is correct
13 Correct 3 ms 8028 KB Output is correct
14 Correct 3 ms 8096 KB Output is correct
15 Correct 2 ms 8280 KB Output is correct
16 Correct 99 ms 21064 KB Output is correct
17 Correct 298 ms 37520 KB Output is correct
18 Correct 20 ms 10676 KB Output is correct
19 Correct 79 ms 20944 KB Output is correct
20 Correct 262 ms 37552 KB Output is correct
21 Correct 150 ms 25956 KB Output is correct
22 Correct 90 ms 19824 KB Output is correct
23 Correct 271 ms 37604 KB Output is correct
24 Correct 312 ms 37676 KB Output is correct
25 Correct 274 ms 37708 KB Output is correct
26 Correct 106 ms 20728 KB Output is correct
27 Correct 79 ms 20676 KB Output is correct
28 Correct 81 ms 20684 KB Output is correct
29 Correct 87 ms 20680 KB Output is correct
30 Correct 80 ms 21000 KB Output is correct
31 Correct 2 ms 8028 KB Output is correct
32 Correct 2 ms 8028 KB Output is correct
33 Correct 2 ms 8028 KB Output is correct
34 Correct 2 ms 8028 KB Output is correct
35 Correct 2 ms 8028 KB Output is correct
36 Correct 2 ms 8024 KB Output is correct
37 Correct 2 ms 8028 KB Output is correct
38 Correct 2 ms 8028 KB Output is correct
39 Correct 2 ms 8028 KB Output is correct
40 Correct 2 ms 8024 KB Output is correct
41 Correct 104 ms 19076 KB Output is correct
42 Correct 233 ms 32068 KB Output is correct
43 Correct 260 ms 32156 KB Output is correct
44 Correct 39 ms 13768 KB Output is correct
45 Correct 233 ms 32180 KB Output is correct
46 Correct 236 ms 32012 KB Output is correct
47 Correct 219 ms 32076 KB Output is correct
48 Correct 257 ms 32168 KB Output is correct
49 Correct 272 ms 31984 KB Output is correct
50 Correct 258 ms 32348 KB Output is correct
51 Correct 220 ms 32084 KB Output is correct
52 Correct 253 ms 32084 KB Output is correct
53 Correct 229 ms 32076 KB Output is correct
54 Correct 260 ms 32152 KB Output is correct
55 Correct 231 ms 32980 KB Output is correct
56 Correct 232 ms 32176 KB Output is correct
57 Correct 250 ms 32072 KB Output is correct
58 Correct 249 ms 32056 KB Output is correct
59 Correct 44 ms 13748 KB Output is correct
60 Correct 252 ms 32168 KB Output is correct
61 Correct 253 ms 32332 KB Output is correct
62 Correct 62 ms 15500 KB Output is correct
63 Correct 47 ms 14276 KB Output is correct
64 Correct 54 ms 15376 KB Output is correct
65 Correct 54 ms 15564 KB Output is correct
66 Correct 57 ms 14116 KB Output is correct
67 Correct 57 ms 13752 KB Output is correct
68 Correct 54 ms 15312 KB Output is correct
69 Correct 42 ms 13764 KB Output is correct
70 Correct 51 ms 15372 KB Output is correct
71 Correct 38 ms 13664 KB Output is correct
72 Correct 167 ms 25920 KB Output is correct
73 Correct 292 ms 37712 KB Output is correct
74 Correct 278 ms 37632 KB Output is correct
75 Correct 259 ms 37704 KB Output is correct
76 Correct 305 ms 37628 KB Output is correct
77 Correct 257 ms 37672 KB Output is correct
78 Correct 261 ms 37700 KB Output is correct
79 Correct 281 ms 37496 KB Output is correct
80 Correct 287 ms 37644 KB Output is correct
81 Correct 310 ms 37672 KB Output is correct
82 Correct 262 ms 37688 KB Output is correct
83 Correct 256 ms 37696 KB Output is correct
84 Correct 302 ms 37476 KB Output is correct
85 Correct 272 ms 37696 KB Output is correct
86 Correct 274 ms 37824 KB Output is correct
87 Correct 275 ms 37676 KB Output is correct
88 Correct 299 ms 37608 KB Output is correct
89 Correct 83 ms 20228 KB Output is correct
90 Correct 270 ms 37568 KB Output is correct
91 Correct 251 ms 37524 KB Output is correct
92 Correct 102 ms 21708 KB Output is correct
93 Correct 100 ms 26532 KB Output is correct
94 Correct 85 ms 21584 KB Output is correct
95 Correct 86 ms 21704 KB Output is correct
96 Correct 104 ms 27824 KB Output is correct
97 Correct 76 ms 20944 KB Output is correct
98 Correct 110 ms 21644 KB Output is correct
99 Correct 76 ms 21704 KB Output is correct
100 Correct 90 ms 21704 KB Output is correct