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답안 #334795

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
334795 2020-12-10T02:19:52 Z tengiz05 Evacuation plan (IZhO18_plan) C++17
100 / 100
 838 ms 60256 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define FASTIO ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define pii pair<int, int>
#define ff first
#define ss second
#define PI acos(-1)
#define ld long double
const int mod = 1e9+7, N = 1e5+5;
int msb(int val){return sizeof(int)*8-__builtin_clzll(val);}
int a[N], n, m, k;
vector<pii> edges[N];
vector<int> dist(N, mod*mod);
set<int> s[N];
int ans[N];
bool used[N];
struct des{
	vector<int> p;
	des(){
		p.resize(n, 0);
		for(int i=0;i<n;i++)p[i] = i;
	}
	int par(int i){
		if(i==p[i])return i;
		return p[i] = par(p[i]);
	}
	void merge(int u, int v, int di){
		u=par(u), v=par(v);
		if(u == v)return;
		if(s[u].size()<s[v].size())swap(s[u], s[v]);
		for(auto x : s[v]){
			if(s[u].count(x)){
				ans[x] = di;
			}else {
				s[u].insert(x);
			}
		}p[v] = u;
	}
};

void solve(int test_case){
	int i, j;
	cin >> n >> m;
	for(i=0;i<m;i++){
		int u, v, c;
		cin >> u >> v >> c;
		u--,v--;
		edges[u].pb({v,c});
		edges[v].pb({u,c});
	}
	priority_queue<pii, vector<pii>, greater<pii>> q;
	cin >> k;
	for(i=0;i<k;i++){
		int u;
		cin >> u;u--;
		dist[u] = 0;
		q.push({0, u});
	}
	while(!q.empty()){
		auto [d, u] = q.top(); q.pop();
		if(d > dist[u])continue;
		assert(d == dist[u]);
		for(auto [v, c] : edges[u]){
			if(dist[v] > d+c){
				dist[v] = d+c;
				q.push({dist[v], v});
			}
		}
	}
	des ds;
	
	int Q;
	cin >> Q;
	for(j=0;j<Q;j++){
		int u, v;
		cin >> u >> v;u--,v--;
		s[u].insert(j);
		s[v].insert(j);
	}
	vector<pii> v;
	for(i=0;i<n;i++)v.pb({dist[i], i});
	sort(all(v));reverse(all(v));
	for(auto [dis, u] : v){
		used[u] = true;
		for(auto [V, noneed] : edges[u]){
			if(used[V])ds.merge(u, V, dis);
		}
	}
	for(i=0;i<Q;i++)cout << ans[i] << '\n';
	return;
}
 
signed main(){
	FASTIO;
#define MULTITEST 0
#if MULTITEST
	int ___T;
	cin >> ___T;
	for(int T_CASE = 1; T_CASE <= ___T; T_CASE++)
		solve(T_CASE);
#else
	solve(1);
#endif
	return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 8172 KB Output is correct
2 Correct 7 ms 8448 KB Output is correct
3 Correct 7 ms 8428 KB Output is correct
4 Correct 7 ms 8172 KB Output is correct
5 Correct 7 ms 8428 KB Output is correct
6 Correct 7 ms 8428 KB Output is correct
7 Correct 6 ms 8172 KB Output is correct
8 Correct 6 ms 8172 KB Output is correct
9 Correct 8 ms 8428 KB Output is correct
10 Correct 8 ms 8556 KB Output is correct
11 Correct 7 ms 8428 KB Output is correct
12 Correct 7 ms 8428 KB Output is correct
13 Correct 7 ms 8428 KB Output is correct
14 Correct 8 ms 8428 KB Output is correct
15 Correct 7 ms 8428 KB Output is correct

Subtask #2
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 8172 KB Output is correct
2 Correct 7 ms 8448 KB Output is correct
3 Correct 7 ms 8428 KB Output is correct
4 Correct 7 ms 8172 KB Output is correct
5 Correct 7 ms 8428 KB Output is correct
6 Correct 7 ms 8428 KB Output is correct
7 Correct 6 ms 8172 KB Output is correct
8 Correct 6 ms 8172 KB Output is correct
9 Correct 8 ms 8428 KB Output is correct
10 Correct 8 ms 8556 KB Output is correct
11 Correct 7 ms 8428 KB Output is correct
12 Correct 7 ms 8428 KB Output is correct
13 Correct 7 ms 8428 KB Output is correct
14 Correct 8 ms 8428 KB Output is correct
15 Correct 7 ms 8428 KB Output is correct
16 Correct 382 ms 36192 KB Output is correct
17 Correct 816 ms 55004 KB Output is correct
18 Correct 47 ms 13032 KB Output is correct
19 Correct 269 ms 29916 KB Output is correct
20 Correct 809 ms 54644 KB Output is correct
21 Correct 523 ms 41560 KB Output is correct
22 Correct 280 ms 33372 KB Output is correct
23 Correct 825 ms 54360 KB Output is correct
24 Correct 813 ms 54496 KB Output is correct
25 Correct 833 ms 54488 KB Output is correct
26 Correct 264 ms 29916 KB Output is correct
27 Correct 257 ms 29788 KB Output is correct
28 Correct 261 ms 30044 KB Output is correct
29 Correct 254 ms 29788 KB Output is correct
30 Correct 262 ms 29788 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 8172 KB Output is correct
2 Correct 6 ms 8172 KB Output is correct
3 Correct 6 ms 8172 KB Output is correct
4 Correct 6 ms 8172 KB Output is correct
5 Correct 6 ms 8172 KB Output is correct
6 Correct 7 ms 8172 KB Output is correct
7 Correct 7 ms 8172 KB Output is correct
8 Correct 6 ms 8172 KB Output is correct
9 Correct 6 ms 8172 KB Output is correct
10 Correct 6 ms 8172 KB Output is correct

Subtask #4
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 245 ms 25848 KB Output is correct
2 Correct 501 ms 42328 KB Output is correct
3 Correct 497 ms 42332 KB Output is correct
4 Correct 85 ms 17504 KB Output is correct
5 Correct 493 ms 42208 KB Output is correct
6 Correct 493 ms 42336 KB Output is correct
7 Correct 491 ms 42208 KB Output is correct
8 Correct 487 ms 42208 KB Output is correct
9 Correct 502 ms 42196 KB Output is correct
10 Correct 504 ms 42208 KB Output is correct
11 Correct 499 ms 42340 KB Output is correct
12 Correct 499 ms 42208 KB Output is correct
13 Correct 493 ms 42208 KB Output is correct
14 Correct 489 ms 42336 KB Output is correct
15 Correct 499 ms 42972 KB Output is correct
16 Correct 491 ms 42208 KB Output is correct
17 Correct 497 ms 42080 KB Output is correct
18 Correct 490 ms 42080 KB Output is correct
19 Correct 78 ms 17504 KB Output is correct
20 Correct 490 ms 42084 KB Output is correct
21 Correct 447 ms 41564 KB Output is correct
22 Correct 111 ms 19932 KB Output is correct
23 Correct 94 ms 17888 KB Output is correct
24 Correct 110 ms 19932 KB Output is correct
25 Correct 110 ms 19932 KB Output is correct
26 Correct 115 ms 18020 KB Output is correct
27 Correct 86 ms 17504 KB Output is correct
28 Correct 111 ms 19932 KB Output is correct
29 Correct 84 ms 17504 KB Output is correct
30 Correct 110 ms 19932 KB Output is correct
31 Correct 81 ms 17504 KB Output is correct

Subtask #5
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 8172 KB Output is correct
2 Correct 7 ms 8448 KB Output is correct
3 Correct 7 ms 8428 KB Output is correct
4 Correct 7 ms 8172 KB Output is correct
5 Correct 7 ms 8428 KB Output is correct
6 Correct 7 ms 8428 KB Output is correct
7 Correct 6 ms 8172 KB Output is correct
8 Correct 6 ms 8172 KB Output is correct
9 Correct 8 ms 8428 KB Output is correct
10 Correct 8 ms 8556 KB Output is correct
11 Correct 7 ms 8428 KB Output is correct
12 Correct 7 ms 8428 KB Output is correct
13 Correct 7 ms 8428 KB Output is correct
14 Correct 8 ms 8428 KB Output is correct
15 Correct 7 ms 8428 KB Output is correct
16 Correct 382 ms 36192 KB Output is correct
17 Correct 816 ms 55004 KB Output is correct
18 Correct 47 ms 13032 KB Output is correct
19 Correct 269 ms 29916 KB Output is correct
20 Correct 809 ms 54644 KB Output is correct
21 Correct 523 ms 41560 KB Output is correct
22 Correct 280 ms 33372 KB Output is correct
23 Correct 825 ms 54360 KB Output is correct
24 Correct 813 ms 54496 KB Output is correct
25 Correct 833 ms 54488 KB Output is correct
26 Correct 264 ms 29916 KB Output is correct
27 Correct 257 ms 29788 KB Output is correct
28 Correct 261 ms 30044 KB Output is correct
29 Correct 254 ms 29788 KB Output is correct
30 Correct 262 ms 29788 KB Output is correct
31 Correct 7 ms 8172 KB Output is correct
32 Correct 6 ms 8172 KB Output is correct
33 Correct 6 ms 8172 KB Output is correct
34 Correct 6 ms 8172 KB Output is correct
35 Correct 6 ms 8172 KB Output is correct
36 Correct 7 ms 8172 KB Output is correct
37 Correct 7 ms 8172 KB Output is correct
38 Correct 6 ms 8172 KB Output is correct
39 Correct 6 ms 8172 KB Output is correct
40 Correct 6 ms 8172 KB Output is correct
41 Correct 245 ms 25848 KB Output is correct
42 Correct 501 ms 42328 KB Output is correct
43 Correct 497 ms 42332 KB Output is correct
44 Correct 85 ms 17504 KB Output is correct
45 Correct 493 ms 42208 KB Output is correct
46 Correct 493 ms 42336 KB Output is correct
47 Correct 491 ms 42208 KB Output is correct
48 Correct 487 ms 42208 KB Output is correct
49 Correct 502 ms 42196 KB Output is correct
50 Correct 504 ms 42208 KB Output is correct
51 Correct 499 ms 42340 KB Output is correct
52 Correct 499 ms 42208 KB Output is correct
53 Correct 493 ms 42208 KB Output is correct
54 Correct 489 ms 42336 KB Output is correct
55 Correct 499 ms 42972 KB Output is correct
56 Correct 491 ms 42208 KB Output is correct
57 Correct 497 ms 42080 KB Output is correct
58 Correct 490 ms 42080 KB Output is correct
59 Correct 78 ms 17504 KB Output is correct
60 Correct 490 ms 42084 KB Output is correct
61 Correct 447 ms 41564 KB Output is correct
62 Correct 111 ms 19932 KB Output is correct
63 Correct 94 ms 17888 KB Output is correct
64 Correct 110 ms 19932 KB Output is correct
65 Correct 110 ms 19932 KB Output is correct
66 Correct 115 ms 18020 KB Output is correct
67 Correct 86 ms 17504 KB Output is correct
68 Correct 111 ms 19932 KB Output is correct
69 Correct 84 ms 17504 KB Output is correct
70 Correct 110 ms 19932 KB Output is correct
71 Correct 81 ms 17504 KB Output is correct
72 Correct 560 ms 42336 KB Output is correct
73 Correct 801 ms 54364 KB Output is correct
74 Correct 838 ms 54364 KB Output is correct
75 Correct 813 ms 54112 KB Output is correct
76 Correct 813 ms 54240 KB Output is correct
77 Correct 792 ms 54116 KB Output is correct
78 Correct 796 ms 53852 KB Output is correct
79 Correct 814 ms 53720 KB Output is correct
80 Correct 790 ms 53600 KB Output is correct
81 Correct 814 ms 53840 KB Output is correct
82 Correct 805 ms 53940 KB Output is correct
83 Correct 795 ms 53744 KB Output is correct
84 Correct 795 ms 53596 KB Output is correct
85 Correct 824 ms 53724 KB Output is correct
86 Correct 827 ms 53500 KB Output is correct
87 Correct 794 ms 53468 KB Output is correct
88 Correct 800 ms 53600 KB Output is correct
89 Correct 321 ms 32092 KB Output is correct
90 Correct 822 ms 53372 KB Output is correct
91 Correct 771 ms 52448 KB Output is correct
92 Correct 357 ms 32732 KB Output is correct
93 Correct 429 ms 57820 KB Output is correct
94 Correct 359 ms 32604 KB Output is correct
95 Correct 349 ms 32732 KB Output is correct
96 Correct 479 ms 60256 KB Output is correct
97 Correct 364 ms 34728 KB Output is correct
98 Correct 352 ms 32476 KB Output is correct
99 Correct 363 ms 34780 KB Output is correct
100 Correct 350 ms 32476 KB Output is correct