oj.uz

Submission #334792

# Submission time Handle Problem Language Result Execution time Memory
334792 2020-12-10T02:04:11 Z amunduzbaev Evacuation plan (IZhO18_plan) C++14
100 / 100
 833 ms 39520 KB 
#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ub upper_bound
#define lb lower_bound
#define ll long long 
#define ld long double 
#define pii pair<int, int>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(),x.rend()
#define prc(n) fixed << setprecision(n)
#define fastios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pi acos(-1);
const int inf = 1e9+7;
const int N = 1e5+5;

vector<pii>edges[N];
int dis[N], par[N], id[N], ans[N], used[N];
set<int>s[N];

bool cmp(int a, int b){
	return dis[a] > dis[b];
}

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

void merge(int x, int y, int v){
	if((x = find(x)) == (y = find(y))) return;
	if(sz(s[x]) < sz(s[y])) swap(x, y);
	for(set<int>::iterator it = s[y].begin(); it != s[y].end(); it++){
		if(s[x].count(*it)){
			ans[*it] = v;
			s[x].erase(*it);
		}
		else s[x].insert(*it);
	}
	s[y].clear();
	par[y] = x;
}

void solve(){
	int n, m;
	cin>>n>>m;
	for(int i=0;i<m;i++){
		int a, b, c;
		cin>>a>>b>>c;
		edges[a].pb({b, c});
		edges[b].pb({a, c});
	}
	
	for(int i=1;i<=n;i++) dis[i] = inf;
	
	int k;
	cin>>k;
	queue<int>qq;
	
	for(int i=0;i<k;i++){
		int a;
		cin>>a;
		dis[a] = 0;
		qq.push(a);
	}
	while(!qq.empty()){
		int cur = qq.front(); qq.pop();
		for(auto x:edges[cur]){
			if(x.ss + dis[cur] < dis[x.ff]){
				dis[x.ff] = x.ss + dis[cur];
				qq.push(x.ff);
			}
		}
	}	int q;
	cin>>q;
	for(int i=1;i<=q;i++){
		int a, b;
		cin>>a>>b;
		s[a].insert(i);
		s[b].insert(i);
	}
	for(int i=1;i<=n;i++){
		par[i] = id[i] = i;
	}
	sort(id+1, id+n+1, cmp);
	for(int i=1;i<=n;i++){
		used[id[i]] = 1;
		for(auto x : edges[id[i]]){
			if(used[x.ff]){
				merge(x.ff, id[i], dis[id[i]]);
			}
		}
	}
	for(int i=1;i<=q;i++) cout<<ans[i]<<"\n";
	return;
}
/*

9 12
1 9 4 
1 2 5
2 3 7
2 4 3
4 3 6
3 6 4
8 7 10
6 7 5
5 8 1
9 5 7
5 4 12
6 8 2
2
4 7
5
1 6
5 3
4 8
5 8
1 5

*/
int main(){
	fastios
	int t = 1;
	//cin>>t;
	while(t--) solve();
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7404 KB Output is correct
2 Correct 7 ms 7532 KB Output is correct
3 Correct 7 ms 7532 KB Output is correct
4 Correct 5 ms 7404 KB Output is correct
5 Correct 6 ms 7532 KB Output is correct
6 Correct 7 ms 7532 KB Output is correct
7 Correct 6 ms 7404 KB Output is correct
8 Correct 5 ms 7404 KB Output is correct
9 Correct 7 ms 7532 KB Output is correct
10 Correct 7 ms 7532 KB Output is correct
11 Correct 6 ms 7532 KB Output is correct
12 Correct 6 ms 7532 KB Output is correct
13 Correct 6 ms 7532 KB Output is correct
14 Correct 6 ms 7532 KB Output is correct
15 Correct 6 ms 7532 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7404 KB Output is correct
2 Correct 7 ms 7532 KB Output is correct
3 Correct 7 ms 7532 KB Output is correct
4 Correct 5 ms 7404 KB Output is correct
5 Correct 6 ms 7532 KB Output is correct
6 Correct 7 ms 7532 KB Output is correct
7 Correct 6 ms 7404 KB Output is correct
8 Correct 5 ms 7404 KB Output is correct
9 Correct 7 ms 7532 KB Output is correct
10 Correct 7 ms 7532 KB Output is correct
11 Correct 6 ms 7532 KB Output is correct
12 Correct 6 ms 7532 KB Output is correct
13 Correct 6 ms 7532 KB Output is correct
14 Correct 6 ms 7532 KB Output is correct
15 Correct 6 ms 7532 KB Output is correct
16 Correct 271 ms 25324 KB Output is correct
17 Correct 791 ms 38476 KB Output is correct
18 Correct 39 ms 10476 KB Output is correct
19 Correct 211 ms 25952 KB Output is correct
20 Correct 774 ms 39240 KB Output is correct
21 Correct 421 ms 28780 KB Output is correct
22 Correct 171 ms 25708 KB Output is correct
23 Correct 744 ms 39148 KB Output is correct
24 Correct 728 ms 39520 KB Output is correct
25 Correct 734 ms 39152 KB Output is correct
26 Correct 213 ms 25824 KB Output is correct
27 Correct 208 ms 25824 KB Output is correct
28 Correct 209 ms 25824 KB Output is correct
29 Correct 213 ms 25824 KB Output is correct
30 Correct 206 ms 25952 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7404 KB Output is correct
2 Correct 5 ms 7404 KB Output is correct
3 Correct 5 ms 7404 KB Output is correct
4 Correct 6 ms 7404 KB Output is correct
5 Correct 5 ms 7404 KB Output is correct
6 Correct 6 ms 7404 KB Output is correct
7 Correct 6 ms 7404 KB Output is correct
8 Correct 5 ms 7404 KB Output is correct
9 Correct 5 ms 7404 KB Output is correct
10 Correct 5 ms 7404 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 197 ms 18924 KB Output is correct
2 Correct 476 ms 29712 KB Output is correct
3 Correct 476 ms 29548 KB Output is correct
4 Correct 81 ms 13804 KB Output is correct
5 Correct 467 ms 29292 KB Output is correct
6 Correct 448 ms 29144 KB Output is correct
7 Correct 446 ms 29676 KB Output is correct
8 Correct 455 ms 29408 KB Output is correct
9 Correct 452 ms 29260 KB Output is correct
10 Correct 455 ms 29392 KB Output is correct
11 Correct 465 ms 29292 KB Output is correct
12 Correct 438 ms 29504 KB Output is correct
13 Correct 444 ms 29472 KB Output is correct
14 Correct 424 ms 29164 KB Output is correct
15 Correct 415 ms 29196 KB Output is correct
16 Correct 427 ms 29244 KB Output is correct
17 Correct 464 ms 29364 KB Output is correct
18 Correct 496 ms 29420 KB Output is correct
19 Correct 77 ms 13676 KB Output is correct
20 Correct 477 ms 29452 KB Output is correct
21 Correct 391 ms 29612 KB Output is correct
22 Correct 78 ms 14884 KB Output is correct
23 Correct 83 ms 14188 KB Output is correct
24 Correct 75 ms 14944 KB Output is correct
25 Correct 73 ms 14944 KB Output is correct
26 Correct 87 ms 14444 KB Output is correct
27 Correct 84 ms 13676 KB Output is correct
28 Correct 76 ms 15072 KB Output is correct
29 Correct 86 ms 13676 KB Output is correct
30 Correct 82 ms 15072 KB Output is correct
31 Correct 81 ms 13804 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7404 KB Output is correct
2 Correct 7 ms 7532 KB Output is correct
3 Correct 7 ms 7532 KB Output is correct
4 Correct 5 ms 7404 KB Output is correct
5 Correct 6 ms 7532 KB Output is correct
6 Correct 7 ms 7532 KB Output is correct
7 Correct 6 ms 7404 KB Output is correct
8 Correct 5 ms 7404 KB Output is correct
9 Correct 7 ms 7532 KB Output is correct
10 Correct 7 ms 7532 KB Output is correct
11 Correct 6 ms 7532 KB Output is correct
12 Correct 6 ms 7532 KB Output is correct
13 Correct 6 ms 7532 KB Output is correct
14 Correct 6 ms 7532 KB Output is correct
15 Correct 6 ms 7532 KB Output is correct
16 Correct 271 ms 25324 KB Output is correct
17 Correct 791 ms 38476 KB Output is correct
18 Correct 39 ms 10476 KB Output is correct
19 Correct 211 ms 25952 KB Output is correct
20 Correct 774 ms 39240 KB Output is correct
21 Correct 421 ms 28780 KB Output is correct
22 Correct 171 ms 25708 KB Output is correct
23 Correct 744 ms 39148 KB Output is correct
24 Correct 728 ms 39520 KB Output is correct
25 Correct 734 ms 39152 KB Output is correct
26 Correct 213 ms 25824 KB Output is correct
27 Correct 208 ms 25824 KB Output is correct
28 Correct 209 ms 25824 KB Output is correct
29 Correct 213 ms 25824 KB Output is correct
30 Correct 206 ms 25952 KB Output is correct
31 Correct 6 ms 7404 KB Output is correct
32 Correct 5 ms 7404 KB Output is correct
33 Correct 5 ms 7404 KB Output is correct
34 Correct 6 ms 7404 KB Output is correct
35 Correct 5 ms 7404 KB Output is correct
36 Correct 6 ms 7404 KB Output is correct
37 Correct 6 ms 7404 KB Output is correct
38 Correct 5 ms 7404 KB Output is correct
39 Correct 5 ms 7404 KB Output is correct
40 Correct 5 ms 7404 KB Output is correct
41 Correct 197 ms 18924 KB Output is correct
42 Correct 476 ms 29712 KB Output is correct
43 Correct 476 ms 29548 KB Output is correct
44 Correct 81 ms 13804 KB Output is correct
45 Correct 467 ms 29292 KB Output is correct
46 Correct 448 ms 29144 KB Output is correct
47 Correct 446 ms 29676 KB Output is correct
48 Correct 455 ms 29408 KB Output is correct
49 Correct 452 ms 29260 KB Output is correct
50 Correct 455 ms 29392 KB Output is correct
51 Correct 465 ms 29292 KB Output is correct
52 Correct 438 ms 29504 KB Output is correct
53 Correct 444 ms 29472 KB Output is correct
54 Correct 424 ms 29164 KB Output is correct
55 Correct 415 ms 29196 KB Output is correct
56 Correct 427 ms 29244 KB Output is correct
57 Correct 464 ms 29364 KB Output is correct
58 Correct 496 ms 29420 KB Output is correct
59 Correct 77 ms 13676 KB Output is correct
60 Correct 477 ms 29452 KB Output is correct
61 Correct 391 ms 29612 KB Output is correct
62 Correct 78 ms 14884 KB Output is correct
63 Correct 83 ms 14188 KB Output is correct
64 Correct 75 ms 14944 KB Output is correct
65 Correct 73 ms 14944 KB Output is correct
66 Correct 87 ms 14444 KB Output is correct
67 Correct 84 ms 13676 KB Output is correct
68 Correct 76 ms 15072 KB Output is correct
69 Correct 86 ms 13676 KB Output is correct
70 Correct 82 ms 15072 KB Output is correct
71 Correct 81 ms 13804 KB Output is correct
72 Correct 482 ms 29232 KB Output is correct
73 Correct 797 ms 39044 KB Output is correct
74 Correct 833 ms 38928 KB Output is correct
75 Correct 766 ms 38952 KB Output is correct
76 Correct 757 ms 38928 KB Output is correct
77 Correct 817 ms 38976 KB Output is correct
78 Correct 789 ms 39124 KB Output is correct
79 Correct 800 ms 39128 KB Output is correct
80 Correct 805 ms 39180 KB Output is correct
81 Correct 772 ms 39156 KB Output is correct
82 Correct 801 ms 39196 KB Output is correct
83 Correct 744 ms 39068 KB Output is correct
84 Correct 751 ms 39120 KB Output is correct
85 Correct 732 ms 38708 KB Output is correct
86 Correct 787 ms 38680 KB Output is correct
87 Correct 783 ms 36916 KB Output is correct
88 Correct 813 ms 36988 KB Output is correct
89 Correct 356 ms 25708 KB Output is correct
90 Correct 782 ms 36756 KB Output is correct
91 Correct 713 ms 37076 KB Output is correct
92 Correct 330 ms 25824 KB Output is correct
93 Correct 468 ms 26348 KB Output is correct
94 Correct 341 ms 25836 KB Output is correct
95 Correct 319 ms 25824 KB Output is correct
96 Correct 529 ms 25708 KB Output is correct
97 Correct 380 ms 25324 KB Output is correct
98 Correct 334 ms 25696 KB Output is correct
99 Correct 375 ms 25324 KB Output is correct
100 Correct 327 ms 25824 KB Output is correct