oj.uz

Submission #812625

# Submission time Handle Problem Language Result Execution time Memory
812625 2023-08-07T09:39:09 Z I_Love_EliskaM_ Dreaming (IOI13_dreaming) C++17
47 / 100
 625 ms 26272 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

# Verdict Execution time Memory Grader output
1 Correct 405 ms 23480 KB Output is correct
2 Correct 379 ms 18960 KB Output is correct
3 Correct 214 ms 16268 KB Output is correct
4 Correct 42 ms 5576 KB Output is correct
5 Correct 35 ms 4056 KB Output is correct
6 Correct 81 ms 6308 KB Output is correct
7 Correct 2 ms 2668 KB Output is correct
8 Correct 165 ms 9804 KB Output is correct
9 Correct 210 ms 13128 KB Output is correct
10 Correct 3 ms 2796 KB Output is correct
11 Correct 428 ms 13816 KB Output is correct
12 Correct 383 ms 17768 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 2644 KB Output is correct
3 Correct 2 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 2772 KB Output is correct
7 Correct 2 ms 2660 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2668 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 1 ms 2644 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2664 KB Output is correct
18 Correct 2 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 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 2668 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 405 ms 23480 KB Output is correct
2 Correct 379 ms 18960 KB Output is correct
3 Correct 214 ms 16268 KB Output is correct
4 Correct 42 ms 5576 KB Output is correct
5 Correct 35 ms 4056 KB Output is correct
6 Correct 81 ms 6308 KB Output is correct
7 Correct 2 ms 2668 KB Output is correct
8 Correct 165 ms 9804 KB Output is correct
9 Correct 210 ms 13128 KB Output is correct
10 Correct 3 ms 2796 KB Output is correct
11 Correct 428 ms 13816 KB Output is correct
12 Correct 383 ms 17768 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 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 2772 KB Output is correct
20 Correct 2 ms 2660 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 2668 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 1 ms 2644 KB Output is correct
28 Correct 1 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2664 KB Output is correct
31 Correct 2 ms 2644 KB Output is correct
32 Correct 1 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 2668 KB Output is correct
39 Correct 419 ms 23652 KB Output is correct
40 Correct 390 ms 18816 KB Output is correct
41 Correct 247 ms 16176 KB Output is correct
42 Correct 41 ms 5576 KB Output is correct
43 Correct 2 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 2644 KB Output is correct
47 Correct 2 ms 2644 KB Output is correct
48 Correct 2 ms 2708 KB Output is correct
49 Correct 2 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 2 ms 2644 KB Output is correct
53 Correct 2 ms 2644 KB Output is correct
54 Correct 2 ms 2664 KB Output is correct
55 Correct 2 ms 2644 KB Output is correct
56 Correct 2 ms 2660 KB Output is correct
57 Correct 452 ms 11220 KB Output is correct
58 Correct 493 ms 11188 KB Output is correct
59 Correct 518 ms 11608 KB Output is correct
60 Correct 453 ms 11276 KB Output is correct
61 Correct 448 ms 11548 KB Output is correct
62 Correct 443 ms 11684 KB Output is correct
63 Correct 457 ms 11264 KB Output is correct
64 Correct 403 ms 11276 KB Output is correct
65 Correct 412 ms 11476 KB Output is correct
66 Correct 390 ms 11524 KB Output is correct
67 Correct 486 ms 11352 KB Output is correct
68 Correct 440 ms 11216 KB Output is correct
69 Correct 468 ms 11664 KB Output is correct
70 Correct 447 ms 11428 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 10 ms 2916 KB Output is correct
73 Correct 10 ms 2900 KB Output is correct
74 Correct 10 ms 2844 KB Output is correct
75 Correct 10 ms 2956 KB Output is correct
76 Correct 9 ms 2956 KB Output is correct
77 Correct 9 ms 2928 KB Output is correct
78 Correct 10 ms 2972 KB Output is correct
79 Correct 10 ms 2960 KB Output is correct
80 Correct 481 ms 11648 KB Output is correct
81 Correct 429 ms 11544 KB Output is correct
82 Correct 438 ms 11788 KB Output is correct
83 Correct 410 ms 11240 KB Output is correct
84 Correct 9 ms 2916 KB Output is correct
85 Correct 6 ms 2892 KB Output is correct
86 Correct 7 ms 2920 KB Output is correct
87 Correct 11 ms 2900 KB Output is correct
88 Correct 8 ms 2804 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 2952 KB Output is correct
92 Correct 9 ms 2932 KB Output is correct
93 Correct 9 ms 2932 KB Output is correct
94 Correct 1 ms 2644 KB Output is correct
95 Correct 1 ms 2668 KB Output is correct
96 Correct 1 ms 2644 KB Output is correct
97 Correct 1 ms 2660 KB Output is correct
98 Correct 2 ms 2644 KB Output is correct
99 Correct 1 ms 2660 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 4052 KB Output is correct
105 Correct 91 ms 6304 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 159 ms 9548 KB Output is correct
108 Correct 205 ms 12448 KB Output is correct
109 Correct 3 ms 2772 KB Output is correct
110 Correct 313 ms 12732 KB Output is correct
111 Correct 384 ms 16596 KB Output is correct
112 Correct 4 ms 2772 KB Output is correct
113 Correct 625 ms 26272 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 200 ms 9356 KB Output is correct
2 Correct 258 ms 9324 KB Output is correct
3 Correct 210 ms 9360 KB Output is correct
4 Correct 195 ms 9392 KB Output is correct
5 Correct 199 ms 9368 KB Output is correct
6 Correct 217 ms 9732 KB Output is correct
7 Correct 217 ms 9588 KB Output is correct
8 Correct 191 ms 8984 KB Output is correct
9 Correct 207 ms 9064 KB Output is correct
10 Correct 218 ms 9544 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

# 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 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2660 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2668 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 1 ms 2644 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2664 KB Output is correct
18 Correct 2 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 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 2668 KB Output is correct
26 Correct 3 ms 2644 KB Output is correct
27 Correct 6 ms 2772 KB Output is correct
28 Correct 8 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 405 ms 23480 KB Output is correct
2 Correct 379 ms 18960 KB Output is correct
3 Correct 214 ms 16268 KB Output is correct
4 Correct 42 ms 5576 KB Output is correct
5 Correct 35 ms 4056 KB Output is correct
6 Correct 81 ms 6308 KB Output is correct
7 Correct 2 ms 2668 KB Output is correct
8 Correct 165 ms 9804 KB Output is correct
9 Correct 210 ms 13128 KB Output is correct
10 Correct 3 ms 2796 KB Output is correct
11 Correct 428 ms 13816 KB Output is correct
12 Correct 383 ms 17768 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 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 2772 KB Output is correct
20 Correct 2 ms 2660 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 2668 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 1 ms 2644 KB Output is correct
28 Correct 1 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2664 KB Output is correct
31 Correct 2 ms 2644 KB Output is correct
32 Correct 1 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 2668 KB Output is correct
39 Correct 419 ms 23652 KB Output is correct
40 Correct 390 ms 18816 KB Output is correct
41 Correct 247 ms 16176 KB Output is correct
42 Correct 41 ms 5576 KB Output is correct
43 Correct 2 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 2644 KB Output is correct
47 Correct 2 ms 2644 KB Output is correct
48 Correct 2 ms 2708 KB Output is correct
49 Correct 2 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 2 ms 2644 KB Output is correct
53 Correct 2 ms 2644 KB Output is correct
54 Correct 2 ms 2664 KB Output is correct
55 Correct 2 ms 2644 KB Output is correct
56 Correct 2 ms 2660 KB Output is correct
57 Correct 452 ms 11220 KB Output is correct
58 Correct 493 ms 11188 KB Output is correct
59 Correct 518 ms 11608 KB Output is correct
60 Correct 453 ms 11276 KB Output is correct
61 Correct 448 ms 11548 KB Output is correct
62 Correct 443 ms 11684 KB Output is correct
63 Correct 457 ms 11264 KB Output is correct
64 Correct 403 ms 11276 KB Output is correct
65 Correct 412 ms 11476 KB Output is correct
66 Correct 390 ms 11524 KB Output is correct
67 Correct 486 ms 11352 KB Output is correct
68 Correct 440 ms 11216 KB Output is correct
69 Correct 468 ms 11664 KB Output is correct
70 Correct 447 ms 11428 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 10 ms 2916 KB Output is correct
73 Correct 10 ms 2900 KB Output is correct
74 Correct 10 ms 2844 KB Output is correct
75 Correct 10 ms 2956 KB Output is correct
76 Correct 9 ms 2956 KB Output is correct
77 Correct 9 ms 2928 KB Output is correct
78 Correct 10 ms 2972 KB Output is correct
79 Correct 10 ms 2960 KB Output is correct
80 Correct 481 ms 11648 KB Output is correct
81 Correct 429 ms 11544 KB Output is correct
82 Correct 438 ms 11788 KB Output is correct
83 Correct 410 ms 11240 KB Output is correct
84 Correct 9 ms 2916 KB Output is correct
85 Correct 6 ms 2892 KB Output is correct
86 Correct 7 ms 2920 KB Output is correct
87 Correct 11 ms 2900 KB Output is correct
88 Correct 8 ms 2804 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 2952 KB Output is correct
92 Correct 9 ms 2932 KB Output is correct
93 Correct 9 ms 2932 KB Output is correct
94 Correct 1 ms 2644 KB Output is correct
95 Correct 1 ms 2668 KB Output is correct
96 Correct 1 ms 2644 KB Output is correct
97 Correct 1 ms 2660 KB Output is correct
98 Correct 2 ms 2644 KB Output is correct
99 Correct 1 ms 2660 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 4052 KB Output is correct
105 Correct 91 ms 6304 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 159 ms 9548 KB Output is correct
108 Correct 205 ms 12448 KB Output is correct
109 Correct 3 ms 2772 KB Output is correct
110 Correct 313 ms 12732 KB Output is correct
111 Correct 384 ms 16596 KB Output is correct
112 Correct 4 ms 2772 KB Output is correct
113 Correct 625 ms 26272 KB Output is correct
114 Correct 200 ms 9356 KB Output is correct
115 Correct 258 ms 9324 KB Output is correct
116 Correct 210 ms 9360 KB Output is correct
117 Correct 195 ms 9392 KB Output is correct
118 Correct 199 ms 9368 KB Output is correct
119 Correct 217 ms 9732 KB Output is correct
120 Correct 217 ms 9588 KB Output is correct
121 Correct 191 ms 8984 KB Output is correct
122 Correct 207 ms 9064 KB Output is correct
123 Correct 218 ms 9544 KB Output is correct
124 Incorrect 1 ms 2644 KB Output isn't correct
125 Halted 0 ms 0 KB -