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답안 #812648

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
812648 2023-08-07T09:48:57 Z I_Love_EliskaM_ 꿈 (IOI13_dreaming) C++17
47 / 100
 626 ms 26268 KB 
#include "dreaming.h"
#include <bits/stdc++.h>
using namespace std;
#define forn(i,n) for(int i=0; i<n; ++i)
#define pb push_back
#define all(x) x.begin(), x.end()
#define pi pair<int,int>
#define f first
#define s second
using ll = long long;

struct DSU {
	vector<int> p,sz;
	DSU(int n) {
		forn(i,n) p.pb(i), sz.pb(1);
	}
	int get(int u) {
		return p[u]==u?u:get(p[u]);
	}
	void uni(int u, int v) {
		u=get(u),v=get(v);
		if (u==v) return;
		if (sz[u]<sz[v]) swap(u,v);
		sz[u]+=sz[v];
		p[v]=u;
	}
};

const int N=1e5+5;
vector<pi> adj[N];
bitset<N> vis;

int d[N], in[N];
void dfs(int u, int p) {
	in[u]=0;
	for(auto&e:adj[u]) {
		int v=e.f, w=e.s;
		if (v==p) continue;
		d[v]=d[u]+w;
		dfs(v,u);
		in[u]=max(in[u],in[v]+w);
	}
}

int ans=0;
pi find(int u, int p, int o) {
	ans=max(ans,o+in[u]);
	pi ret = {u, max(o,in[u])};
	vector<int> sf={0};
	reverse(all(adj[u]));
	for(auto&e:adj[u]) {
		int v=e.f, w=e.s;
		if (v==p) continue;
		sf.pb(max(sf.back(),in[v]+w));
	}
	reverse(all(adj[u]));
	int mx=0;
	for(auto&e:adj[u]) {
		int v=e.f, w=e.s;
		if (v==p) continue;
		sf.pop_back();
		auto x = find(v,u,max({o,mx,sf.back()})+w);
		if (x.s<ret.s) ret=x;
		mx=max(mx,in[v]+w);
	}
	return ret;
}

int travelTime(int n, int m, int l, int a[], int b[], int t[]) {

	forn(i,m) {
		int u=a[i],v=b[i],w=t[i];
		adj[u].pb({v,w});
		adj[v].pb({u,w});
	}

	forn(it,20) {

		DSU dsu(n);
		forn(i,n) for(auto&x:adj[i]) dsu.uni(i,x.f);
		vis.reset();
		vector<int> c;
		forn(i,n) {
			int u=dsu.get(i);
			if (vis[u]) continue;
			vis[u]=1;
			c.pb(u);
		}
		int k=c.size();
		vector<pi> z;
		forn(i,k) {
			d[c[i]]=0;
			dfs(c[i],-1);
			auto q=find(c[i],-1,0);
			swap(q.f,q.s);
			z.pb(q);
		}
		sort(all(z));
		forn(i,k/2) {
			int u=z[i].s, v=z[(k+1)/2+i].s;
			adj[u].pb({v,l});
			adj[v].pb({u,l});
		}

	}

	ans=0;
	d[0]=0;
	dfs(0,-1);
	find(0,-1,0);
	return ans;

}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 533 ms 22172 KB Output is correct
2 Correct 459 ms 17592 KB Output is correct
3 Correct 219 ms 15336 KB Output is correct
4 Correct 43 ms 5376 KB Output is correct
5 Correct 51 ms 3924 KB Output is correct
6 Correct 78 ms 5988 KB Output is correct
7 Correct 2 ms 2724 KB Output is correct
8 Correct 162 ms 9280 KB Output is correct
9 Correct 210 ms 12500 KB Output is correct
10 Correct 3 ms 2772 KB Output is correct
11 Correct 302 ms 12580 KB Output is correct
12 Correct 399 ms 16664 KB Output is correct
13 Correct 4 ms 2772 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 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 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 1 ms 2644 KB Output is correct
17 Correct 1 ms 2644 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 2 ms 2692 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 2 ms 2688 KB Output is correct
24 Correct 1 ms 2644 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct

Subtask #3
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 533 ms 22172 KB Output is correct
2 Correct 459 ms 17592 KB Output is correct
3 Correct 219 ms 15336 KB Output is correct
4 Correct 43 ms 5376 KB Output is correct
5 Correct 51 ms 3924 KB Output is correct
6 Correct 78 ms 5988 KB Output is correct
7 Correct 2 ms 2724 KB Output is correct
8 Correct 162 ms 9280 KB Output is correct
9 Correct 210 ms 12500 KB Output is correct
10 Correct 3 ms 2772 KB Output is correct
11 Correct 302 ms 12580 KB Output is correct
12 Correct 399 ms 16664 KB Output is correct
13 Correct 4 ms 2772 KB Output is correct
14 Correct 1 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 1 ms 2644 KB Output is correct
17 Correct 1 ms 2644 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 1 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 1 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 1 ms 2644 KB Output is correct
29 Correct 1 ms 2644 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 2 ms 2692 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2688 KB Output is correct
37 Correct 1 ms 2644 KB Output is correct
38 Correct 1 ms 2644 KB Output is correct
39 Correct 404 ms 22176 KB Output is correct
40 Correct 378 ms 17736 KB Output is correct
41 Correct 210 ms 15320 KB Output is correct
42 Correct 41 ms 5372 KB Output is correct
43 Correct 2 ms 2644 KB Output is correct
44 Correct 2 ms 2644 KB Output is correct
45 Correct 1 ms 2644 KB Output is correct
46 Correct 1 ms 2644 KB Output is correct
47 Correct 1 ms 2644 KB Output is correct
48 Correct 1 ms 2644 KB Output is correct
49 Correct 1 ms 2644 KB Output is correct
50 Correct 1 ms 2644 KB Output is correct
51 Correct 1 ms 2644 KB Output is correct
52 Correct 1 ms 2644 KB Output is correct
53 Correct 1 ms 2644 KB Output is correct
54 Correct 2 ms 2644 KB Output is correct
55 Correct 1 ms 2644 KB Output is correct
56 Correct 2 ms 2644 KB Output is correct
57 Correct 459 ms 9860 KB Output is correct
58 Correct 433 ms 9964 KB Output is correct
59 Correct 473 ms 10292 KB Output is correct
60 Correct 434 ms 9832 KB Output is correct
61 Correct 424 ms 10100 KB Output is correct
62 Correct 414 ms 10016 KB Output is correct
63 Correct 408 ms 9888 KB Output is correct
64 Correct 400 ms 9860 KB Output is correct
65 Correct 416 ms 9920 KB Output is correct
66 Correct 385 ms 9924 KB Output is correct
67 Correct 455 ms 10104 KB Output is correct
68 Correct 441 ms 9864 KB Output is correct
69 Correct 446 ms 9860 KB Output is correct
70 Correct 460 ms 9876 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 10 ms 2900 KB Output is correct
73 Correct 12 ms 2900 KB Output is correct
74 Correct 10 ms 2920 KB Output is correct
75 Correct 9 ms 2900 KB Output is correct
76 Correct 9 ms 2900 KB Output is correct
77 Correct 9 ms 2916 KB Output is correct
78 Correct 10 ms 2900 KB Output is correct
79 Correct 12 ms 2924 KB Output is correct
80 Correct 444 ms 10208 KB Output is correct
81 Correct 441 ms 10224 KB Output is correct
82 Correct 428 ms 10092 KB Output is correct
83 Correct 438 ms 9748 KB Output is correct
84 Correct 5 ms 2772 KB Output is correct
85 Correct 5 ms 2772 KB Output is correct
86 Correct 7 ms 2772 KB Output is correct
87 Correct 9 ms 2884 KB Output is correct
88 Correct 8 ms 2892 KB Output is correct
89 Correct 8 ms 2900 KB Output is correct
90 Correct 9 ms 2772 KB Output is correct
91 Correct 12 ms 2900 KB Output is correct
92 Correct 9 ms 2772 KB Output is correct
93 Correct 8 ms 2900 KB Output is correct
94 Correct 1 ms 2644 KB Output is correct
95 Correct 1 ms 2644 KB Output is correct
96 Correct 1 ms 2644 KB Output is correct
97 Correct 1 ms 2644 KB Output is correct
98 Correct 1 ms 2644 KB Output is correct
99 Correct 2 ms 2644 KB Output is correct
100 Correct 1 ms 2644 KB Output is correct
101 Correct 2 ms 2644 KB Output is correct
102 Correct 1 ms 2644 KB Output is correct
103 Correct 1 ms 2644 KB Output is correct
104 Correct 35 ms 3924 KB Output is correct
105 Correct 83 ms 5992 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 177 ms 9424 KB Output is correct
108 Correct 220 ms 12500 KB Output is correct
109 Correct 4 ms 2800 KB Output is correct
110 Correct 336 ms 12624 KB Output is correct
111 Correct 429 ms 16572 KB Output is correct
112 Correct 4 ms 2772 KB Output is correct
113 Correct 626 ms 26268 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 207 ms 9352 KB Output is correct
2 Correct 203 ms 9392 KB Output is correct
3 Correct 223 ms 9472 KB Output is correct
4 Correct 200 ms 9360 KB Output is correct
5 Correct 195 ms 9368 KB Output is correct
6 Correct 232 ms 9728 KB Output is correct
7 Correct 216 ms 9468 KB Output is correct
8 Correct 193 ms 9036 KB Output is correct
9 Correct 210 ms 9004 KB Output is correct
10 Correct 217 ms 9536 KB Output is correct
11 Incorrect 1 ms 2644 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 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 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 1 ms 2644 KB Output is correct
17 Correct 1 ms 2644 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 2 ms 2692 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 2 ms 2688 KB Output is correct
24 Correct 1 ms 2644 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 3 ms 2644 KB Output is correct
27 Correct 6 ms 2772 KB Output is correct
28 Correct 9 ms 2920 KB Output is correct
29 Incorrect 3 ms 2644 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 533 ms 22172 KB Output is correct
2 Correct 459 ms 17592 KB Output is correct
3 Correct 219 ms 15336 KB Output is correct
4 Correct 43 ms 5376 KB Output is correct
5 Correct 51 ms 3924 KB Output is correct
6 Correct 78 ms 5988 KB Output is correct
7 Correct 2 ms 2724 KB Output is correct
8 Correct 162 ms 9280 KB Output is correct
9 Correct 210 ms 12500 KB Output is correct
10 Correct 3 ms 2772 KB Output is correct
11 Correct 302 ms 12580 KB Output is correct
12 Correct 399 ms 16664 KB Output is correct
13 Correct 4 ms 2772 KB Output is correct
14 Correct 1 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 1 ms 2644 KB Output is correct
17 Correct 1 ms 2644 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 1 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 1 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 1 ms 2644 KB Output is correct
29 Correct 1 ms 2644 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 2 ms 2692 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2688 KB Output is correct
37 Correct 1 ms 2644 KB Output is correct
38 Correct 1 ms 2644 KB Output is correct
39 Correct 404 ms 22176 KB Output is correct
40 Correct 378 ms 17736 KB Output is correct
41 Correct 210 ms 15320 KB Output is correct
42 Correct 41 ms 5372 KB Output is correct
43 Correct 2 ms 2644 KB Output is correct
44 Correct 2 ms 2644 KB Output is correct
45 Correct 1 ms 2644 KB Output is correct
46 Correct 1 ms 2644 KB Output is correct
47 Correct 1 ms 2644 KB Output is correct
48 Correct 1 ms 2644 KB Output is correct
49 Correct 1 ms 2644 KB Output is correct
50 Correct 1 ms 2644 KB Output is correct
51 Correct 1 ms 2644 KB Output is correct
52 Correct 1 ms 2644 KB Output is correct
53 Correct 1 ms 2644 KB Output is correct
54 Correct 2 ms 2644 KB Output is correct
55 Correct 1 ms 2644 KB Output is correct
56 Correct 2 ms 2644 KB Output is correct
57 Correct 459 ms 9860 KB Output is correct
58 Correct 433 ms 9964 KB Output is correct
59 Correct 473 ms 10292 KB Output is correct
60 Correct 434 ms 9832 KB Output is correct
61 Correct 424 ms 10100 KB Output is correct
62 Correct 414 ms 10016 KB Output is correct
63 Correct 408 ms 9888 KB Output is correct
64 Correct 400 ms 9860 KB Output is correct
65 Correct 416 ms 9920 KB Output is correct
66 Correct 385 ms 9924 KB Output is correct
67 Correct 455 ms 10104 KB Output is correct
68 Correct 441 ms 9864 KB Output is correct
69 Correct 446 ms 9860 KB Output is correct
70 Correct 460 ms 9876 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 10 ms 2900 KB Output is correct
73 Correct 12 ms 2900 KB Output is correct
74 Correct 10 ms 2920 KB Output is correct
75 Correct 9 ms 2900 KB Output is correct
76 Correct 9 ms 2900 KB Output is correct
77 Correct 9 ms 2916 KB Output is correct
78 Correct 10 ms 2900 KB Output is correct
79 Correct 12 ms 2924 KB Output is correct
80 Correct 444 ms 10208 KB Output is correct
81 Correct 441 ms 10224 KB Output is correct
82 Correct 428 ms 10092 KB Output is correct
83 Correct 438 ms 9748 KB Output is correct
84 Correct 5 ms 2772 KB Output is correct
85 Correct 5 ms 2772 KB Output is correct
86 Correct 7 ms 2772 KB Output is correct
87 Correct 9 ms 2884 KB Output is correct
88 Correct 8 ms 2892 KB Output is correct
89 Correct 8 ms 2900 KB Output is correct
90 Correct 9 ms 2772 KB Output is correct
91 Correct 12 ms 2900 KB Output is correct
92 Correct 9 ms 2772 KB Output is correct
93 Correct 8 ms 2900 KB Output is correct
94 Correct 1 ms 2644 KB Output is correct
95 Correct 1 ms 2644 KB Output is correct
96 Correct 1 ms 2644 KB Output is correct
97 Correct 1 ms 2644 KB Output is correct
98 Correct 1 ms 2644 KB Output is correct
99 Correct 2 ms 2644 KB Output is correct
100 Correct 1 ms 2644 KB Output is correct
101 Correct 2 ms 2644 KB Output is correct
102 Correct 1 ms 2644 KB Output is correct
103 Correct 1 ms 2644 KB Output is correct
104 Correct 35 ms 3924 KB Output is correct
105 Correct 83 ms 5992 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 177 ms 9424 KB Output is correct
108 Correct 220 ms 12500 KB Output is correct
109 Correct 4 ms 2800 KB Output is correct
110 Correct 336 ms 12624 KB Output is correct
111 Correct 429 ms 16572 KB Output is correct
112 Correct 4 ms 2772 KB Output is correct
113 Correct 626 ms 26268 KB Output is correct
114 Correct 207 ms 9352 KB Output is correct
115 Correct 203 ms 9392 KB Output is correct
116 Correct 223 ms 9472 KB Output is correct
117 Correct 200 ms 9360 KB Output is correct
118 Correct 195 ms 9368 KB Output is correct
119 Correct 232 ms 9728 KB Output is correct
120 Correct 216 ms 9468 KB Output is correct
121 Correct 193 ms 9036 KB Output is correct
122 Correct 210 ms 9004 KB Output is correct
123 Correct 217 ms 9536 KB Output is correct
124 Incorrect 1 ms 2644 KB Output isn't correct
125 Halted 0 ms 0 KB -