oj.uz

Submission #812643

# Submission time Handle Problem Language Result Execution time Memory
812643 2023-08-07T09:46:58 Z I_Love_EliskaM_ Dreaming (IOI13_dreaming) C++17
47 / 100
 910 ms 26200 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));
		reverse(all(z));
		vector<pi> z2;
		int r=0;
		for (int i=0; i<k; ++i) {
			r=max(r,i+1);
			while (r<k && z[k].f+l>z[i].f) ++r;
			if (r>=k) {
				z2.pb(z[i]); continue;
			}
			int u=z[i].s, v=z[r].s;
			adj[u].pb({v,l});
			adj[v].pb({u,l});
			++r;
		}
		k=z2.size();
		forn(i,k/2) {
			int u=z2[i].s, v=z2[k/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

# Verdict Execution time Memory Grader output
1 Correct 417 ms 22784 KB Output is correct
2 Correct 350 ms 18376 KB Output is correct
3 Correct 208 ms 15980 KB Output is correct
4 Correct 42 ms 5588 KB Output is correct
5 Correct 35 ms 4052 KB Output is correct
6 Correct 81 ms 6296 KB Output is correct
7 Correct 4 ms 2644 KB Output is correct
8 Correct 158 ms 9804 KB Output is correct
9 Correct 910 ms 13172 KB Output is correct
10 Correct 3 ms 2772 KB Output is correct
11 Correct 538 ms 13312 KB Output is correct
12 Correct 403 ms 17296 KB Output is correct
13 Correct 4 ms 2772 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2660 KB Output is correct
3 Correct 2 ms 2664 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2652 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2592 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2664 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 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 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 417 ms 22784 KB Output is correct
2 Correct 350 ms 18376 KB Output is correct
3 Correct 208 ms 15980 KB Output is correct
4 Correct 42 ms 5588 KB Output is correct
5 Correct 35 ms 4052 KB Output is correct
6 Correct 81 ms 6296 KB Output is correct
7 Correct 4 ms 2644 KB Output is correct
8 Correct 158 ms 9804 KB Output is correct
9 Correct 910 ms 13172 KB Output is correct
10 Correct 3 ms 2772 KB Output is correct
11 Correct 538 ms 13312 KB Output is correct
12 Correct 403 ms 17296 KB Output is correct
13 Correct 4 ms 2772 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2660 KB Output is correct
16 Correct 2 ms 2664 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2652 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 2592 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2664 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2644 KB Output is correct
31 Correct 2 ms 2644 KB Output is correct
32 Correct 2 ms 2644 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 2644 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 2 ms 2644 KB Output is correct
39 Correct 430 ms 22776 KB Output is correct
40 Correct 378 ms 18440 KB Output is correct
41 Correct 219 ms 15856 KB Output is correct
42 Correct 42 ms 5588 KB Output is correct
43 Correct 1 ms 2644 KB Output is correct
44 Correct 2 ms 2644 KB Output is correct
45 Correct 2 ms 2644 KB Output is correct
46 Correct 2 ms 2664 KB Output is correct
47 Correct 2 ms 2644 KB Output is correct
48 Correct 2 ms 2644 KB Output is correct
49 Correct 2 ms 2664 KB Output is correct
50 Correct 2 ms 2644 KB Output is correct
51 Correct 2 ms 2644 KB Output is correct
52 Correct 2 ms 2660 KB Output is correct
53 Correct 2 ms 2644 KB Output is correct
54 Correct 2 ms 2644 KB Output is correct
55 Correct 2 ms 2660 KB Output is correct
56 Correct 2 ms 2644 KB Output is correct
57 Correct 415 ms 10508 KB Output is correct
58 Correct 435 ms 10672 KB Output is correct
59 Correct 451 ms 10940 KB Output is correct
60 Correct 447 ms 10520 KB Output is correct
61 Correct 427 ms 10668 KB Output is correct
62 Correct 410 ms 10672 KB Output is correct
63 Correct 447 ms 10560 KB Output is correct
64 Correct 383 ms 10560 KB Output is correct
65 Correct 425 ms 10604 KB Output is correct
66 Correct 392 ms 10532 KB Output is correct
67 Correct 459 ms 10608 KB Output is correct
68 Correct 447 ms 10512 KB Output is correct
69 Correct 444 ms 10500 KB Output is correct
70 Correct 466 ms 10548 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 10 ms 2976 KB Output is correct
73 Correct 10 ms 2968 KB Output is correct
74 Correct 10 ms 2960 KB Output is correct
75 Correct 9 ms 2900 KB Output is correct
76 Correct 9 ms 2960 KB Output is correct
77 Correct 9 ms 2900 KB Output is correct
78 Correct 10 ms 2900 KB Output is correct
79 Correct 10 ms 2900 KB Output is correct
80 Correct 459 ms 10904 KB Output is correct
81 Correct 449 ms 10884 KB Output is correct
82 Correct 432 ms 10772 KB Output is correct
83 Correct 412 ms 10356 KB Output is correct
84 Correct 5 ms 2900 KB Output is correct
85 Correct 5 ms 2772 KB Output is correct
86 Correct 8 ms 2804 KB Output is correct
87 Correct 9 ms 2900 KB Output is correct
88 Correct 8 ms 2924 KB Output is correct
89 Correct 8 ms 2900 KB Output is correct
90 Correct 9 ms 2900 KB Output is correct
91 Correct 10 ms 2956 KB Output is correct
92 Correct 9 ms 2928 KB Output is correct
93 Correct 8 ms 2932 KB Output is correct
94 Correct 2 ms 2644 KB Output is correct
95 Correct 2 ms 2644 KB Output is correct
96 Correct 1 ms 2644 KB Output is correct
97 Correct 2 ms 2644 KB Output is correct
98 Correct 2 ms 2664 KB Output is correct
99 Correct 2 ms 2644 KB Output is correct
100 Correct 2 ms 2664 KB Output is correct
101 Correct 2 ms 2644 KB Output is correct
102 Correct 2 ms 2644 KB Output is correct
103 Correct 1 ms 2644 KB Output is correct
104 Correct 40 ms 4100 KB Output is correct
105 Correct 79 ms 6276 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 161 ms 9564 KB Output is correct
108 Correct 205 ms 12496 KB Output is correct
109 Correct 3 ms 2772 KB Output is correct
110 Correct 337 ms 12648 KB Output is correct
111 Correct 385 ms 16664 KB Output is correct
112 Correct 4 ms 2772 KB Output is correct
113 Correct 601 ms 26200 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 199 ms 12424 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2660 KB Output is correct
3 Correct 2 ms 2664 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2652 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2592 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2664 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 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 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 3 ms 2644 KB Output is correct
27 Incorrect 6 ms 2852 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 417 ms 22784 KB Output is correct
2 Correct 350 ms 18376 KB Output is correct
3 Correct 208 ms 15980 KB Output is correct
4 Correct 42 ms 5588 KB Output is correct
5 Correct 35 ms 4052 KB Output is correct
6 Correct 81 ms 6296 KB Output is correct
7 Correct 4 ms 2644 KB Output is correct
8 Correct 158 ms 9804 KB Output is correct
9 Correct 910 ms 13172 KB Output is correct
10 Correct 3 ms 2772 KB Output is correct
11 Correct 538 ms 13312 KB Output is correct
12 Correct 403 ms 17296 KB Output is correct
13 Correct 4 ms 2772 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2660 KB Output is correct
16 Correct 2 ms 2664 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2652 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 2592 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2664 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2644 KB Output is correct
31 Correct 2 ms 2644 KB Output is correct
32 Correct 2 ms 2644 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 2644 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 2 ms 2644 KB Output is correct
39 Correct 430 ms 22776 KB Output is correct
40 Correct 378 ms 18440 KB Output is correct
41 Correct 219 ms 15856 KB Output is correct
42 Correct 42 ms 5588 KB Output is correct
43 Correct 1 ms 2644 KB Output is correct
44 Correct 2 ms 2644 KB Output is correct
45 Correct 2 ms 2644 KB Output is correct
46 Correct 2 ms 2664 KB Output is correct
47 Correct 2 ms 2644 KB Output is correct
48 Correct 2 ms 2644 KB Output is correct
49 Correct 2 ms 2664 KB Output is correct
50 Correct 2 ms 2644 KB Output is correct
51 Correct 2 ms 2644 KB Output is correct
52 Correct 2 ms 2660 KB Output is correct
53 Correct 2 ms 2644 KB Output is correct
54 Correct 2 ms 2644 KB Output is correct
55 Correct 2 ms 2660 KB Output is correct
56 Correct 2 ms 2644 KB Output is correct
57 Correct 415 ms 10508 KB Output is correct
58 Correct 435 ms 10672 KB Output is correct
59 Correct 451 ms 10940 KB Output is correct
60 Correct 447 ms 10520 KB Output is correct
61 Correct 427 ms 10668 KB Output is correct
62 Correct 410 ms 10672 KB Output is correct
63 Correct 447 ms 10560 KB Output is correct
64 Correct 383 ms 10560 KB Output is correct
65 Correct 425 ms 10604 KB Output is correct
66 Correct 392 ms 10532 KB Output is correct
67 Correct 459 ms 10608 KB Output is correct
68 Correct 447 ms 10512 KB Output is correct
69 Correct 444 ms 10500 KB Output is correct
70 Correct 466 ms 10548 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 10 ms 2976 KB Output is correct
73 Correct 10 ms 2968 KB Output is correct
74 Correct 10 ms 2960 KB Output is correct
75 Correct 9 ms 2900 KB Output is correct
76 Correct 9 ms 2960 KB Output is correct
77 Correct 9 ms 2900 KB Output is correct
78 Correct 10 ms 2900 KB Output is correct
79 Correct 10 ms 2900 KB Output is correct
80 Correct 459 ms 10904 KB Output is correct
81 Correct 449 ms 10884 KB Output is correct
82 Correct 432 ms 10772 KB Output is correct
83 Correct 412 ms 10356 KB Output is correct
84 Correct 5 ms 2900 KB Output is correct
85 Correct 5 ms 2772 KB Output is correct
86 Correct 8 ms 2804 KB Output is correct
87 Correct 9 ms 2900 KB Output is correct
88 Correct 8 ms 2924 KB Output is correct
89 Correct 8 ms 2900 KB Output is correct
90 Correct 9 ms 2900 KB Output is correct
91 Correct 10 ms 2956 KB Output is correct
92 Correct 9 ms 2928 KB Output is correct
93 Correct 8 ms 2932 KB Output is correct
94 Correct 2 ms 2644 KB Output is correct
95 Correct 2 ms 2644 KB Output is correct
96 Correct 1 ms 2644 KB Output is correct
97 Correct 2 ms 2644 KB Output is correct
98 Correct 2 ms 2664 KB Output is correct
99 Correct 2 ms 2644 KB Output is correct
100 Correct 2 ms 2664 KB Output is correct
101 Correct 2 ms 2644 KB Output is correct
102 Correct 2 ms 2644 KB Output is correct
103 Correct 1 ms 2644 KB Output is correct
104 Correct 40 ms 4100 KB Output is correct
105 Correct 79 ms 6276 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 161 ms 9564 KB Output is correct
108 Correct 205 ms 12496 KB Output is correct
109 Correct 3 ms 2772 KB Output is correct
110 Correct 337 ms 12648 KB Output is correct
111 Correct 385 ms 16664 KB Output is correct
112 Correct 4 ms 2772 KB Output is correct
113 Correct 601 ms 26200 KB Output is correct
114 Incorrect 199 ms 12424 KB Output isn't correct
115 Halted 0 ms 0 KB -