oj.uz

Submission #812615

# Submission time Handle Problem Language Result Execution time Memory
812615 2023-08-07T09:33:07 Z I_Love_EliskaM_ Dreaming (IOI13_dreaming) C++17
47 / 100
 269 ms 26276 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,30) {

		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 241 ms 21860 KB Output is correct
2 Correct 232 ms 17332 KB Output is correct
3 Correct 141 ms 15208 KB Output is correct
4 Correct 34 ms 5252 KB Output is correct
5 Correct 21 ms 3960 KB Output is correct
6 Correct 48 ms 5844 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 100 ms 9208 KB Output is correct
9 Correct 119 ms 12436 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 186 ms 12376 KB Output is correct
12 Correct 219 ms 16280 KB Output is correct
13 Correct 2 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 2644 KB Output is correct
3 Correct 2 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 2 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 2 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 2 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 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 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 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 241 ms 21860 KB Output is correct
2 Correct 232 ms 17332 KB Output is correct
3 Correct 141 ms 15208 KB Output is correct
4 Correct 34 ms 5252 KB Output is correct
5 Correct 21 ms 3960 KB Output is correct
6 Correct 48 ms 5844 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 100 ms 9208 KB Output is correct
9 Correct 119 ms 12436 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 186 ms 12376 KB Output is correct
12 Correct 219 ms 16280 KB Output is correct
13 Correct 2 ms 2772 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 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 2 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 2 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 2 ms 2644 KB Output is correct
26 Correct 1 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 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 2644 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 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 214 ms 21852 KB Output is correct
40 Correct 194 ms 17372 KB Output is correct
41 Correct 127 ms 15252 KB Output is correct
42 Correct 28 ms 5360 KB Output is correct
43 Correct 2 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 2 ms 2644 KB Output is correct
49 Correct 2 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 2 ms 2644 KB Output is correct
56 Correct 1 ms 2644 KB Output is correct
57 Correct 226 ms 9832 KB Output is correct
58 Correct 250 ms 9848 KB Output is correct
59 Correct 259 ms 9904 KB Output is correct
60 Correct 254 ms 10028 KB Output is correct
61 Correct 249 ms 9708 KB Output is correct
62 Correct 243 ms 9720 KB Output is correct
63 Correct 243 ms 9660 KB Output is correct
64 Correct 234 ms 9532 KB Output is correct
65 Correct 239 ms 9552 KB Output is correct
66 Correct 269 ms 9608 KB Output is correct
67 Correct 248 ms 9884 KB Output is correct
68 Correct 251 ms 9824 KB Output is correct
69 Correct 251 ms 9916 KB Output is correct
70 Correct 249 ms 9840 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 7 ms 2900 KB Output is correct
73 Correct 6 ms 2900 KB Output is correct
74 Correct 6 ms 2900 KB Output is correct
75 Correct 7 ms 2900 KB Output is correct
76 Correct 7 ms 2900 KB Output is correct
77 Correct 6 ms 2900 KB Output is correct
78 Correct 8 ms 2924 KB Output is correct
79 Correct 7 ms 2924 KB Output is correct
80 Correct 240 ms 9800 KB Output is correct
81 Correct 262 ms 9848 KB Output is correct
82 Correct 232 ms 9696 KB Output is correct
83 Correct 258 ms 9720 KB Output is correct
84 Correct 4 ms 2772 KB Output is correct
85 Correct 4 ms 2772 KB Output is correct
86 Correct 5 ms 2772 KB Output is correct
87 Correct 6 ms 2772 KB Output is correct
88 Correct 6 ms 2896 KB Output is correct
89 Correct 6 ms 2900 KB Output is correct
90 Correct 6 ms 2896 KB Output is correct
91 Correct 8 ms 2900 KB Output is correct
92 Correct 7 ms 2896 KB Output is correct
93 Correct 6 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 2 ms 2644 KB Output is correct
97 Correct 2 ms 2644 KB Output is correct
98 Correct 2 ms 2644 KB Output is correct
99 Correct 2 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 1 ms 2644 KB Output is correct
103 Correct 1 ms 2644 KB Output is correct
104 Correct 25 ms 3952 KB Output is correct
105 Correct 42 ms 5844 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 84 ms 9296 KB Output is correct
108 Correct 111 ms 12448 KB Output is correct
109 Correct 2 ms 2772 KB Output is correct
110 Correct 157 ms 12384 KB Output is correct
111 Correct 184 ms 16200 KB Output is correct
112 Correct 2 ms 2772 KB Output is correct
113 Correct 253 ms 26276 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 206 ms 9952 KB Output is correct
2 Incorrect 178 ms 9832 KB Output isn't correct
3 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 2644 KB Output is correct
3 Correct 2 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 2 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 2 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 2 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 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 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 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 5 ms 2772 KB Output is correct
28 Correct 10 ms 2900 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 241 ms 21860 KB Output is correct
2 Correct 232 ms 17332 KB Output is correct
3 Correct 141 ms 15208 KB Output is correct
4 Correct 34 ms 5252 KB Output is correct
5 Correct 21 ms 3960 KB Output is correct
6 Correct 48 ms 5844 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 100 ms 9208 KB Output is correct
9 Correct 119 ms 12436 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 186 ms 12376 KB Output is correct
12 Correct 219 ms 16280 KB Output is correct
13 Correct 2 ms 2772 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 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 2 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 2 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 2 ms 2644 KB Output is correct
26 Correct 1 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 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 2644 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 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 214 ms 21852 KB Output is correct
40 Correct 194 ms 17372 KB Output is correct
41 Correct 127 ms 15252 KB Output is correct
42 Correct 28 ms 5360 KB Output is correct
43 Correct 2 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 2 ms 2644 KB Output is correct
49 Correct 2 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 2 ms 2644 KB Output is correct
56 Correct 1 ms 2644 KB Output is correct
57 Correct 226 ms 9832 KB Output is correct
58 Correct 250 ms 9848 KB Output is correct
59 Correct 259 ms 9904 KB Output is correct
60 Correct 254 ms 10028 KB Output is correct
61 Correct 249 ms 9708 KB Output is correct
62 Correct 243 ms 9720 KB Output is correct
63 Correct 243 ms 9660 KB Output is correct
64 Correct 234 ms 9532 KB Output is correct
65 Correct 239 ms 9552 KB Output is correct
66 Correct 269 ms 9608 KB Output is correct
67 Correct 248 ms 9884 KB Output is correct
68 Correct 251 ms 9824 KB Output is correct
69 Correct 251 ms 9916 KB Output is correct
70 Correct 249 ms 9840 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 7 ms 2900 KB Output is correct
73 Correct 6 ms 2900 KB Output is correct
74 Correct 6 ms 2900 KB Output is correct
75 Correct 7 ms 2900 KB Output is correct
76 Correct 7 ms 2900 KB Output is correct
77 Correct 6 ms 2900 KB Output is correct
78 Correct 8 ms 2924 KB Output is correct
79 Correct 7 ms 2924 KB Output is correct
80 Correct 240 ms 9800 KB Output is correct
81 Correct 262 ms 9848 KB Output is correct
82 Correct 232 ms 9696 KB Output is correct
83 Correct 258 ms 9720 KB Output is correct
84 Correct 4 ms 2772 KB Output is correct
85 Correct 4 ms 2772 KB Output is correct
86 Correct 5 ms 2772 KB Output is correct
87 Correct 6 ms 2772 KB Output is correct
88 Correct 6 ms 2896 KB Output is correct
89 Correct 6 ms 2900 KB Output is correct
90 Correct 6 ms 2896 KB Output is correct
91 Correct 8 ms 2900 KB Output is correct
92 Correct 7 ms 2896 KB Output is correct
93 Correct 6 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 2 ms 2644 KB Output is correct
97 Correct 2 ms 2644 KB Output is correct
98 Correct 2 ms 2644 KB Output is correct
99 Correct 2 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 1 ms 2644 KB Output is correct
103 Correct 1 ms 2644 KB Output is correct
104 Correct 25 ms 3952 KB Output is correct
105 Correct 42 ms 5844 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 84 ms 9296 KB Output is correct
108 Correct 111 ms 12448 KB Output is correct
109 Correct 2 ms 2772 KB Output is correct
110 Correct 157 ms 12384 KB Output is correct
111 Correct 184 ms 16200 KB Output is correct
112 Correct 2 ms 2772 KB Output is correct
113 Correct 253 ms 26276 KB Output is correct
114 Correct 206 ms 9952 KB Output is correct
115 Incorrect 178 ms 9832 KB Output isn't correct
116 Halted 0 ms 0 KB -