oj.uz

Submission #812598

# Submission time Handle Problem Language Result Execution time Memory
812598 2023-08-07T09:29:13 Z TimDee Dreaming (IOI13_dreaming) C++17
47 / 100
 225 ms 26176 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();
		for (int i=k&1; i<k; i+=2) {
			d[c[i]]=0;
			d[c[i+1]]=0;
			dfs(c[i],-1);
			dfs(c[i+1],-1);
			auto q1 = find(c[i],-1,0);
			auto q2 = find(c[i+1],-1,0);
			int u=q1.f, v=q2.f;
			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 155 ms 21888 KB Output is correct
2 Correct 164 ms 17436 KB Output is correct
3 Correct 101 ms 15212 KB Output is correct
4 Correct 20 ms 5388 KB Output is correct
5 Correct 16 ms 3952 KB Output is correct
6 Correct 33 ms 5932 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 76 ms 9184 KB Output is correct
9 Correct 82 ms 12436 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 125 ms 12428 KB Output is correct
12 Correct 149 ms 16240 KB Output is correct
13 Correct 3 ms 2772 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 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 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 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 1 ms 2644 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 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 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 1 ms 2644 KB Output is correct
23 Correct 1 ms 2644 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

# Verdict Execution time Memory Grader output
1 Correct 155 ms 21888 KB Output is correct
2 Correct 164 ms 17436 KB Output is correct
3 Correct 101 ms 15212 KB Output is correct
4 Correct 20 ms 5388 KB Output is correct
5 Correct 16 ms 3952 KB Output is correct
6 Correct 33 ms 5932 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 76 ms 9184 KB Output is correct
9 Correct 82 ms 12436 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 125 ms 12428 KB Output is correct
12 Correct 149 ms 16240 KB Output is correct
13 Correct 3 ms 2772 KB Output is correct
14 Correct 1 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 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 1 ms 2644 KB Output is correct
21 Correct 2 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 1 ms 2644 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 1 ms 2644 KB Output is correct
27 Correct 1 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 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 1 ms 2644 KB Output is correct
36 Correct 1 ms 2644 KB Output is correct
37 Correct 1 ms 2644 KB Output is correct
38 Correct 1 ms 2644 KB Output is correct
39 Correct 153 ms 21788 KB Output is correct
40 Correct 145 ms 17352 KB Output is correct
41 Correct 102 ms 15336 KB Output is correct
42 Correct 20 ms 5332 KB Output is correct
43 Correct 1 ms 2644 KB Output is correct
44 Correct 1 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 2 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 1 ms 2644 KB Output is correct
55 Correct 1 ms 2644 KB Output is correct
56 Correct 1 ms 2644 KB Output is correct
57 Correct 174 ms 9892 KB Output is correct
58 Correct 197 ms 9888 KB Output is correct
59 Correct 225 ms 9920 KB Output is correct
60 Correct 212 ms 9828 KB Output is correct
61 Correct 212 ms 9948 KB Output is correct
62 Correct 175 ms 9708 KB Output is correct
63 Correct 197 ms 9580 KB Output is correct
64 Correct 203 ms 9652 KB Output is correct
65 Correct 180 ms 9584 KB Output is correct
66 Correct 181 ms 9568 KB Output is correct
67 Correct 178 ms 9896 KB Output is correct
68 Correct 179 ms 9828 KB Output is correct
69 Correct 194 ms 9872 KB Output is correct
70 Correct 209 ms 9904 KB Output is correct
71 Correct 2 ms 2644 KB Output is correct
72 Correct 7 ms 2860 KB Output is correct
73 Correct 7 ms 2900 KB Output is correct
74 Correct 5 ms 2916 KB Output is correct
75 Correct 5 ms 2912 KB Output is correct
76 Correct 5 ms 2920 KB Output is correct
77 Correct 5 ms 2916 KB Output is correct
78 Correct 5 ms 2900 KB Output is correct
79 Correct 5 ms 2924 KB Output is correct
80 Correct 177 ms 9804 KB Output is correct
81 Correct 192 ms 9868 KB Output is correct
82 Correct 195 ms 9832 KB Output is correct
83 Correct 179 ms 9728 KB Output is correct
84 Correct 3 ms 2880 KB Output is correct
85 Correct 3 ms 2772 KB Output is correct
86 Correct 5 ms 2888 KB Output is correct
87 Correct 4 ms 2772 KB Output is correct
88 Correct 6 ms 2772 KB Output is correct
89 Correct 4 ms 2900 KB Output is correct
90 Correct 5 ms 2772 KB Output is correct
91 Correct 7 ms 2900 KB Output is correct
92 Correct 5 ms 2900 KB Output is correct
93 Correct 5 ms 2772 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 1 ms 2644 KB Output is correct
98 Correct 1 ms 2644 KB Output is correct
99 Correct 1 ms 2644 KB Output is correct
100 Correct 2 ms 2644 KB Output is correct
101 Correct 1 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 15 ms 3964 KB Output is correct
105 Correct 41 ms 5852 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 64 ms 9296 KB Output is correct
108 Correct 93 ms 12440 KB Output is correct
109 Correct 2 ms 2772 KB Output is correct
110 Correct 119 ms 12344 KB Output is correct
111 Correct 135 ms 16256 KB Output is correct
112 Correct 2 ms 2772 KB Output is correct
113 Correct 206 ms 26176 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 173 ms 9812 KB Output is correct
2 Incorrect 151 ms 9848 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 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 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 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 1 ms 2644 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 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 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 1 ms 2644 KB Output is correct
23 Correct 1 ms 2644 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 4 ms 2828 KB Output is correct
28 Correct 6 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

# Verdict Execution time Memory Grader output
1 Correct 155 ms 21888 KB Output is correct
2 Correct 164 ms 17436 KB Output is correct
3 Correct 101 ms 15212 KB Output is correct
4 Correct 20 ms 5388 KB Output is correct
5 Correct 16 ms 3952 KB Output is correct
6 Correct 33 ms 5932 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 76 ms 9184 KB Output is correct
9 Correct 82 ms 12436 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 125 ms 12428 KB Output is correct
12 Correct 149 ms 16240 KB Output is correct
13 Correct 3 ms 2772 KB Output is correct
14 Correct 1 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 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 1 ms 2644 KB Output is correct
21 Correct 2 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 1 ms 2644 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 1 ms 2644 KB Output is correct
27 Correct 1 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 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 1 ms 2644 KB Output is correct
36 Correct 1 ms 2644 KB Output is correct
37 Correct 1 ms 2644 KB Output is correct
38 Correct 1 ms 2644 KB Output is correct
39 Correct 153 ms 21788 KB Output is correct
40 Correct 145 ms 17352 KB Output is correct
41 Correct 102 ms 15336 KB Output is correct
42 Correct 20 ms 5332 KB Output is correct
43 Correct 1 ms 2644 KB Output is correct
44 Correct 1 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 2 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 1 ms 2644 KB Output is correct
55 Correct 1 ms 2644 KB Output is correct
56 Correct 1 ms 2644 KB Output is correct
57 Correct 174 ms 9892 KB Output is correct
58 Correct 197 ms 9888 KB Output is correct
59 Correct 225 ms 9920 KB Output is correct
60 Correct 212 ms 9828 KB Output is correct
61 Correct 212 ms 9948 KB Output is correct
62 Correct 175 ms 9708 KB Output is correct
63 Correct 197 ms 9580 KB Output is correct
64 Correct 203 ms 9652 KB Output is correct
65 Correct 180 ms 9584 KB Output is correct
66 Correct 181 ms 9568 KB Output is correct
67 Correct 178 ms 9896 KB Output is correct
68 Correct 179 ms 9828 KB Output is correct
69 Correct 194 ms 9872 KB Output is correct
70 Correct 209 ms 9904 KB Output is correct
71 Correct 2 ms 2644 KB Output is correct
72 Correct 7 ms 2860 KB Output is correct
73 Correct 7 ms 2900 KB Output is correct
74 Correct 5 ms 2916 KB Output is correct
75 Correct 5 ms 2912 KB Output is correct
76 Correct 5 ms 2920 KB Output is correct
77 Correct 5 ms 2916 KB Output is correct
78 Correct 5 ms 2900 KB Output is correct
79 Correct 5 ms 2924 KB Output is correct
80 Correct 177 ms 9804 KB Output is correct
81 Correct 192 ms 9868 KB Output is correct
82 Correct 195 ms 9832 KB Output is correct
83 Correct 179 ms 9728 KB Output is correct
84 Correct 3 ms 2880 KB Output is correct
85 Correct 3 ms 2772 KB Output is correct
86 Correct 5 ms 2888 KB Output is correct
87 Correct 4 ms 2772 KB Output is correct
88 Correct 6 ms 2772 KB Output is correct
89 Correct 4 ms 2900 KB Output is correct
90 Correct 5 ms 2772 KB Output is correct
91 Correct 7 ms 2900 KB Output is correct
92 Correct 5 ms 2900 KB Output is correct
93 Correct 5 ms 2772 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 1 ms 2644 KB Output is correct
98 Correct 1 ms 2644 KB Output is correct
99 Correct 1 ms 2644 KB Output is correct
100 Correct 2 ms 2644 KB Output is correct
101 Correct 1 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 15 ms 3964 KB Output is correct
105 Correct 41 ms 5852 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 64 ms 9296 KB Output is correct
108 Correct 93 ms 12440 KB Output is correct
109 Correct 2 ms 2772 KB Output is correct
110 Correct 119 ms 12344 KB Output is correct
111 Correct 135 ms 16256 KB Output is correct
112 Correct 2 ms 2772 KB Output is correct
113 Correct 206 ms 26176 KB Output is correct
114 Correct 173 ms 9812 KB Output is correct
115 Incorrect 151 ms 9848 KB Output isn't correct
116 Halted 0 ms 0 KB -