oj.uz

Submission #162535

# Submission time Handle Problem Language Result Execution time Memory
162535 2019-11-08T17:18:05 Z MvC Railway (BOI17_railway) C++11
100 / 100
 140 ms 26176 KB 
#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=1e5+50;
const int mod=1e9+7;
using namespace std;
int n,m,k,i,x,y,in[nmax],out[nmax],tin,up[nmax][20],mn,mx,ed[nmax],rs,id[nmax],vl[nmax],lc;
vector<pair<int,int> >a[nmax];
vector<int>vc;
bitset<nmax>on;
pair<int,int>c[nmax];
void dfs(int x,int p)
{
	in[x]=++tin;
	id[tin]=x;
	up[x][0]=p;
	for(int i=1;i<19;i++)up[x][i]=up[up[x][i-1]][i-1];
	for(int i=0;i<(int)a[x].size();i++)
	{
		int y=a[x][i].fr;
		if(y==p)continue;
		dfs(y,x);
	}
	out[x]=++tin;
}
int anc(int x,int y)
{
	return in[x]<=in[y] && out[y]<=out[x];
}
int lca(int x,int y)
{
	if(anc(x,y))return x;
	if(anc(y,x))return y;
	for(int i=18;i>=0;i--)if(!anc(up[x][i],y))x=up[x][i];
	return up[x][0];
}
void sol(int x,int p,int e)
{
	for(int i=0;i<(int)a[x].size();i++)
	{
		int y=a[x][i].fr;
		if(y==p)continue;
		sol(y,x,a[x][i].sc);
		vl[x]+=vl[y];
	}
	if(vl[x]>=2*k)vc.pb(e);
	//cout<<vl[x]<<" "<<x<<" "<<p<<endl;
}
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n>>m>>k;
	for(i=1;i<n;i++)
	{
		cin>>x>>y;
		a[x].pb(mkp(y,i));
		a[y].pb(mkp(x,i));
	}
	dfs(1,1);
	while(m--)
	{
		cin>>x;
		lc=-1;
		for(i=0;i<x;i++)
		{
			cin>>c[i].sc;
			c[i].fr=in[c[i].sc];
		}
		sort(c,c+x);
		for(i=0;i<x;i++)
		{
			//cout<<c[i].sc<<" "<<c[i-1].sc<<endl;
			vl[c[i].sc]++;
			vl[c[(i+1)%x].sc]++;
			//vl[c[(i+1)%x].sc]++;
			vl[lca(c[i].sc,c[(i+1)%x].sc)]-=2;
		}
	}
	sol(1,1,0);
	sort(vc.begin(),vc.end());
	cout<<(int)vc.size()<<endl;
	for(i=0;i<(int)vc.size();i++)cout<<vc[i]<<" ";
	cout<<endl;
	return 0;
}

Compilation message

railway.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("O3")
 
railway.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("unroll-loops")

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 11 ms 4088 KB Output is correct
3 Correct 11 ms 4216 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 11 ms 4600 KB Output is correct
7 Correct 11 ms 4216 KB Output is correct
8 Correct 10 ms 4216 KB Output is correct
9 Correct 10 ms 4216 KB Output is correct
10 Correct 4 ms 2680 KB Output is correct
11 Correct 4 ms 2680 KB Output is correct
12 Correct 5 ms 2680 KB Output is correct
13 Correct 5 ms 2680 KB Output is correct
14 Correct 5 ms 2680 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 11 ms 4088 KB Output is correct
3 Correct 11 ms 4216 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 11 ms 4600 KB Output is correct
7 Correct 11 ms 4216 KB Output is correct
8 Correct 10 ms 4216 KB Output is correct
9 Correct 10 ms 4216 KB Output is correct
10 Correct 4 ms 2680 KB Output is correct
11 Correct 4 ms 2680 KB Output is correct
12 Correct 5 ms 2680 KB Output is correct
13 Correct 5 ms 2680 KB Output is correct
14 Correct 5 ms 2680 KB Output is correct
15 Correct 30 ms 4600 KB Output is correct
16 Correct 30 ms 4600 KB Output is correct
17 Correct 30 ms 4600 KB Output is correct
18 Correct 11 ms 4600 KB Output is correct
19 Correct 10 ms 4344 KB Output is correct
20 Correct 35 ms 4728 KB Output is correct
21 Correct 41 ms 4644 KB Output is correct
22 Correct 5 ms 2680 KB Output is correct
23 Correct 10 ms 4216 KB Output is correct
24 Correct 11 ms 4216 KB Output is correct
25 Correct 5 ms 2680 KB Output is correct
26 Correct 4 ms 2680 KB Output is correct
27 Correct 11 ms 4600 KB Output is correct
28 Correct 11 ms 4216 KB Output is correct
29 Correct 9 ms 4216 KB Output is correct
30 Correct 10 ms 4216 KB Output is correct
31 Correct 4 ms 2680 KB Output is correct
32 Correct 4 ms 2680 KB Output is correct
33 Correct 4 ms 2680 KB Output is correct
34 Correct 5 ms 2680 KB Output is correct
35 Correct 5 ms 2680 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 23948 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 91 ms 23668 KB Output is correct
4 Correct 83 ms 23004 KB Output is correct
5 Correct 89 ms 24048 KB Output is correct
6 Correct 97 ms 24560 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 97 ms 20060 KB Output is correct
2 Correct 112 ms 16956 KB Output is correct
3 Correct 114 ms 16632 KB Output is correct
4 Correct 115 ms 16636 KB Output is correct
5 Correct 115 ms 16248 KB Output is correct
6 Correct 103 ms 20232 KB Output is correct
7 Correct 101 ms 20104 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 97 ms 20060 KB Output is correct
2 Correct 112 ms 16956 KB Output is correct
3 Correct 114 ms 16632 KB Output is correct
4 Correct 115 ms 16636 KB Output is correct
5 Correct 115 ms 16248 KB Output is correct
6 Correct 103 ms 20232 KB Output is correct
7 Correct 101 ms 20104 KB Output is correct
8 Correct 118 ms 20680 KB Output is correct
9 Correct 119 ms 20572 KB Output is correct
10 Correct 92 ms 24620 KB Output is correct
11 Correct 88 ms 24432 KB Output is correct
12 Correct 91 ms 16632 KB Output is correct
13 Correct 92 ms 17784 KB Output is correct
14 Correct 116 ms 17912 KB Output is correct
15 Correct 137 ms 17912 KB Output is correct
16 Correct 120 ms 18012 KB Output is correct
17 Correct 120 ms 18040 KB Output is correct
18 Correct 119 ms 18040 KB Output is correct
19 Correct 112 ms 18424 KB Output is correct
20 Correct 103 ms 22268 KB Output is correct
21 Correct 106 ms 22448 KB Output is correct
22 Correct 105 ms 22264 KB Output is correct

Subtask #6
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 11 ms 4088 KB Output is correct
3 Correct 11 ms 4216 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 11 ms 4600 KB Output is correct
7 Correct 11 ms 4216 KB Output is correct
8 Correct 10 ms 4216 KB Output is correct
9 Correct 10 ms 4216 KB Output is correct
10 Correct 4 ms 2680 KB Output is correct
11 Correct 4 ms 2680 KB Output is correct
12 Correct 5 ms 2680 KB Output is correct
13 Correct 5 ms 2680 KB Output is correct
14 Correct 5 ms 2680 KB Output is correct
15 Correct 30 ms 4600 KB Output is correct
16 Correct 30 ms 4600 KB Output is correct
17 Correct 30 ms 4600 KB Output is correct
18 Correct 11 ms 4600 KB Output is correct
19 Correct 10 ms 4344 KB Output is correct
20 Correct 35 ms 4728 KB Output is correct
21 Correct 41 ms 4644 KB Output is correct
22 Correct 5 ms 2680 KB Output is correct
23 Correct 10 ms 4216 KB Output is correct
24 Correct 11 ms 4216 KB Output is correct
25 Correct 5 ms 2680 KB Output is correct
26 Correct 4 ms 2680 KB Output is correct
27 Correct 11 ms 4600 KB Output is correct
28 Correct 11 ms 4216 KB Output is correct
29 Correct 9 ms 4216 KB Output is correct
30 Correct 10 ms 4216 KB Output is correct
31 Correct 4 ms 2680 KB Output is correct
32 Correct 4 ms 2680 KB Output is correct
33 Correct 4 ms 2680 KB Output is correct
34 Correct 5 ms 2680 KB Output is correct
35 Correct 5 ms 2680 KB Output is correct
36 Correct 94 ms 23948 KB Output is correct
37 Correct 4 ms 2680 KB Output is correct
38 Correct 91 ms 23668 KB Output is correct
39 Correct 83 ms 23004 KB Output is correct
40 Correct 89 ms 24048 KB Output is correct
41 Correct 97 ms 24560 KB Output is correct
42 Correct 97 ms 20060 KB Output is correct
43 Correct 112 ms 16956 KB Output is correct
44 Correct 114 ms 16632 KB Output is correct
45 Correct 115 ms 16636 KB Output is correct
46 Correct 115 ms 16248 KB Output is correct
47 Correct 103 ms 20232 KB Output is correct
48 Correct 101 ms 20104 KB Output is correct
49 Correct 118 ms 20680 KB Output is correct
50 Correct 119 ms 20572 KB Output is correct
51 Correct 92 ms 24620 KB Output is correct
52 Correct 88 ms 24432 KB Output is correct
53 Correct 91 ms 16632 KB Output is correct
54 Correct 92 ms 17784 KB Output is correct
55 Correct 116 ms 17912 KB Output is correct
56 Correct 137 ms 17912 KB Output is correct
57 Correct 120 ms 18012 KB Output is correct
58 Correct 120 ms 18040 KB Output is correct
59 Correct 119 ms 18040 KB Output is correct
60 Correct 112 ms 18424 KB Output is correct
61 Correct 103 ms 22268 KB Output is correct
62 Correct 106 ms 22448 KB Output is correct
63 Correct 105 ms 22264 KB Output is correct
64 Correct 114 ms 22136 KB Output is correct
65 Correct 140 ms 18072 KB Output is correct
66 Correct 134 ms 17912 KB Output is correct
67 Correct 138 ms 18040 KB Output is correct
68 Correct 93 ms 17732 KB Output is correct
69 Correct 95 ms 17656 KB Output is correct
70 Correct 118 ms 22388 KB Output is correct
71 Correct 116 ms 21856 KB Output is correct
72 Correct 4 ms 2680 KB Output is correct
73 Correct 10 ms 4216 KB Output is correct
74 Correct 11 ms 4216 KB Output is correct
75 Correct 5 ms 2808 KB Output is correct
76 Correct 5 ms 2680 KB Output is correct
77 Correct 12 ms 4600 KB Output is correct
78 Correct 11 ms 4344 KB Output is correct
79 Correct 9 ms 4216 KB Output is correct
80 Correct 10 ms 4216 KB Output is correct
81 Correct 5 ms 2680 KB Output is correct
82 Correct 4 ms 2680 KB Output is correct
83 Correct 5 ms 2680 KB Output is correct
84 Correct 5 ms 2680 KB Output is correct
85 Correct 4 ms 2680 KB Output is correct
86 Correct 54 ms 4728 KB Output is correct
87 Correct 31 ms 4600 KB Output is correct
88 Correct 32 ms 4728 KB Output is correct
89 Correct 12 ms 4600 KB Output is correct
90 Correct 11 ms 4344 KB Output is correct
91 Correct 43 ms 4728 KB Output is correct
92 Correct 39 ms 4728 KB Output is correct
93 Correct 5 ms 2816 KB Output is correct
94 Correct 96 ms 25840 KB Output is correct
95 Correct 90 ms 25588 KB Output is correct
96 Correct 84 ms 24824 KB Output is correct
97 Correct 90 ms 25840 KB Output is correct
98 Correct 96 ms 26176 KB Output is correct
99 Correct 125 ms 18040 KB Output is correct
100 Correct 115 ms 18084 KB Output is correct
101 Correct 114 ms 18072 KB Output is correct
102 Correct 109 ms 18424 KB Output is correct
103 Correct 108 ms 22008 KB Output is correct
104 Correct 107 ms 22300 KB Output is correct
105 Correct 109 ms 21880 KB Output is correct
106 Correct 120 ms 22308 KB Output is correct
107 Correct 113 ms 21880 KB Output is correct
108 Correct 98 ms 25856 KB Output is correct
109 Correct 97 ms 25844 KB Output is correct
110 Correct 93 ms 17912 KB Output is correct
111 Correct 95 ms 17784 KB Output is correct
112 Correct 116 ms 18084 KB Output is correct
113 Correct 120 ms 17912 KB Output is correct