oj.uz

Submission #162408

# Submission time Handle Problem Language Result Execution time Memory
162408 2019-11-08T07:14:01 Z MvC Railway (BOI17_railway) C++11
23 / 100
 1000 ms 24108 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;
vector<pair<int,int> >a[nmax];
bitset<nmax>on;
void dfs(int x,int p)
{
	in[x]=++tin;
	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;
}
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);
		if(on[y])on[x]=1;
	}
	if(on[x] && (mn<in[x] || mx>out[x]))ed[e]++;
}
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;
		mn=inf,mx=0;
		for(i=1;i<=x;i++)
		{
			cin>>y;
			on[y]=1;
			mn=min(mn,in[y]);
			mx=max(mx,out[y]);
		}
		if(x)
		{
			sol(1,1,0);
			on.reset();
		}
	}
	for(i=1;i<n;i++)if(ed[i]>=k)rs++;
	cout<<rs<<endl;
	for(i=1;i<n;i++)if(ed[i]>=k)cout<<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 5 ms 2680 KB Output is correct
2 Correct 80 ms 4088 KB Output is correct
3 Correct 79 ms 4216 KB Output is correct
4 Correct 5 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 111 ms 4472 KB Output is correct
7 Correct 44 ms 4256 KB Output is correct
8 Correct 131 ms 4088 KB Output is correct
9 Correct 167 ms 4216 KB Output is correct
10 Correct 5 ms 2808 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 4 ms 2680 KB Output is correct
13 Correct 7 ms 2808 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 5 ms 2680 KB Output is correct
2 Correct 80 ms 4088 KB Output is correct
3 Correct 79 ms 4216 KB Output is correct
4 Correct 5 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 111 ms 4472 KB Output is correct
7 Correct 44 ms 4256 KB Output is correct
8 Correct 131 ms 4088 KB Output is correct
9 Correct 167 ms 4216 KB Output is correct
10 Correct 5 ms 2808 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 4 ms 2680 KB Output is correct
13 Correct 7 ms 2808 KB Output is correct
14 Correct 5 ms 2680 KB Output is correct
15 Correct 547 ms 4444 KB Output is correct
16 Correct 547 ms 4624 KB Output is correct
17 Correct 595 ms 4600 KB Output is correct
18 Correct 790 ms 4600 KB Output is correct
19 Correct 340 ms 4224 KB Output is correct
20 Correct 118 ms 4600 KB Output is correct
21 Correct 132 ms 4600 KB Output is correct
22 Correct 4 ms 2808 KB Output is correct
23 Correct 79 ms 4140 KB Output is correct
24 Correct 78 ms 4088 KB Output is correct
25 Correct 4 ms 2808 KB Output is correct
26 Correct 4 ms 2680 KB Output is correct
27 Correct 128 ms 4580 KB Output is correct
28 Correct 43 ms 4216 KB Output is correct
29 Correct 133 ms 4216 KB Output is correct
30 Correct 173 ms 4088 KB Output is correct
31 Correct 4 ms 2680 KB Output is correct
32 Correct 5 ms 2808 KB Output is correct
33 Correct 4 ms 2808 KB Output is correct
34 Correct 5 ms 2684 KB Output is correct
35 Correct 16 ms 2684 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1040 ms 24108 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1083 ms 20728 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1083 ms 20728 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2680 KB Output is correct
2 Correct 80 ms 4088 KB Output is correct
3 Correct 79 ms 4216 KB Output is correct
4 Correct 5 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 111 ms 4472 KB Output is correct
7 Correct 44 ms 4256 KB Output is correct
8 Correct 131 ms 4088 KB Output is correct
9 Correct 167 ms 4216 KB Output is correct
10 Correct 5 ms 2808 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 4 ms 2680 KB Output is correct
13 Correct 7 ms 2808 KB Output is correct
14 Correct 5 ms 2680 KB Output is correct
15 Correct 547 ms 4444 KB Output is correct
16 Correct 547 ms 4624 KB Output is correct
17 Correct 595 ms 4600 KB Output is correct
18 Correct 790 ms 4600 KB Output is correct
19 Correct 340 ms 4224 KB Output is correct
20 Correct 118 ms 4600 KB Output is correct
21 Correct 132 ms 4600 KB Output is correct
22 Correct 4 ms 2808 KB Output is correct
23 Correct 79 ms 4140 KB Output is correct
24 Correct 78 ms 4088 KB Output is correct
25 Correct 4 ms 2808 KB Output is correct
26 Correct 4 ms 2680 KB Output is correct
27 Correct 128 ms 4580 KB Output is correct
28 Correct 43 ms 4216 KB Output is correct
29 Correct 133 ms 4216 KB Output is correct
30 Correct 173 ms 4088 KB Output is correct
31 Correct 4 ms 2680 KB Output is correct
32 Correct 5 ms 2808 KB Output is correct
33 Correct 4 ms 2808 KB Output is correct
34 Correct 5 ms 2684 KB Output is correct
35 Correct 16 ms 2684 KB Output is correct
36 Execution timed out 1040 ms 24108 KB Time limit exceeded
37 Halted 0 ms 0 KB -