oj.uz

Submission #419679

# Submission time Handle Problem Language Result Execution time Memory
419679 2021-06-07T11:27:17 Z victoriad Railway (BOI17_railway) C++14
23 / 100
 322 ms 524292 KB 
#include <cmath>
#include <cstdio>
#include <iostream>
#include <utility>
#include <algorithm>
#include <vector>

using namespace std;

void dfs(int i,vector<int>&depth,vector<int>&parent,vector<vector<int> >&a,vector<bool>&v,int p){
	v[i]=true;
	depth[i]=1+depth[p];
	parent[i]=p;
	for(int c:a[i]){
		if(!v[c])
		dfs(c,depth,parent,a,v,i);
	}
}

void conectar(int a,int b,vector<int>&d,vector<int>&p,vector<int>&con,int k,vector<int>&r,vector<vector<int> >&id,vector<bool>&v){
	if(d[a]<d[b])swap(a,b);
	while(d[a]!=d[b]){
		int pa=p[a];
		if(!v[id[a][pa]]){
		con[id[a][pa]]++;
		v[id[a][pa]]=true;
		if(con[id[a][pa]]==k && pa!=a){
			r.push_back(id[a][pa]);
		}
		}
		a=pa;
	}
	while(a!=b){
		int pa=p[a];
		int pb=p[b];
		if(!v[id[a][pa]]){
		con[id[a][pa]]++;
		v[id[a][pa]]=true;
		if(con[id[a][pa]]==k && pa!=a){
			r.push_back(id[a][pa]);
		}
		}
		if(!v[id[b][pb]]){
		con[id[b][pb]]++;
		v[id[b][pb]]=true;
		if(con[id[b][pb]]==k && pb!=b){
			r.push_back(id[b][pb]);
		}
		}
		a=pa;
		b=pb;
	}
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	int n,k,m,x,y,j;
	cin>>n>>m>>k;
	vector<vector<int> >ref(n+1);
	vector<int>re(n+1,0);
	for(int i=0;i<n+1;i++)ref[i]=re;
	vector<vector<int> >a(n);
	for(int i=0;i<n-1;i++){
		cin>>x>>y;
		x--;
		y--;
		ref[x][y]=i+1;
		ref[y][x]=i+1;
		a[x].push_back(y);
		a[y].push_back(x);
	}
	vector<int>depth(n,0);
	vector<int>parent(n,0);
	vector<bool>v(n,false);
	dfs(0,depth,parent,a,v,0);
	vector<int>con(n+1,0);
	vector<int>r;
	for(int i=0;i<m;i++){
		cin>>j;
		cin>>x;
		x--;
		v.assign(n+1,false);
		for(int o=1;o<j;o++){
			cin>>y;
			y--;
			conectar(x,y,depth,parent,con,k,r,ref,v);
			y=x;
		}
	}
	sort(r.begin(),r.end());
	cout<<r.size()<<"\n";
	for(int i=0;i<r.size();i++){
		cout<<r[i]<<" ";
	}

	return 0;
}

Compilation message

railway.cpp: In function 'int main()':
railway.cpp:93:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |  for(int i=0;i<r.size();i++){
      |              ~^~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 174 ms 392836 KB Output is correct
3 Correct 174 ms 392936 KB Output is correct
4 Correct 1 ms 312 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 233 ms 393460 KB Output is correct
7 Correct 177 ms 393024 KB Output is correct
8 Correct 190 ms 392932 KB Output is correct
9 Correct 178 ms 392924 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 174 ms 392836 KB Output is correct
3 Correct 174 ms 392936 KB Output is correct
4 Correct 1 ms 312 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 233 ms 393460 KB Output is correct
7 Correct 177 ms 393024 KB Output is correct
8 Correct 190 ms 392932 KB Output is correct
9 Correct 178 ms 392924 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 197 ms 393332 KB Output is correct
16 Correct 193 ms 393288 KB Output is correct
17 Correct 195 ms 393452 KB Output is correct
18 Correct 322 ms 393344 KB Output is correct
19 Correct 191 ms 393032 KB Output is correct
20 Correct 193 ms 393540 KB Output is correct
21 Correct 195 ms 393388 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 179 ms 392952 KB Output is correct
24 Correct 176 ms 392924 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 241 ms 393360 KB Output is correct
28 Correct 183 ms 392996 KB Output is correct
29 Correct 174 ms 392980 KB Output is correct
30 Correct 173 ms 392904 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 308 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Runtime error 210 ms 524292 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Runtime error 213 ms 524292 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Runtime error 213 ms 524292 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 174 ms 392836 KB Output is correct
3 Correct 174 ms 392936 KB Output is correct
4 Correct 1 ms 312 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 233 ms 393460 KB Output is correct
7 Correct 177 ms 393024 KB Output is correct
8 Correct 190 ms 392932 KB Output is correct
9 Correct 178 ms 392924 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 197 ms 393332 KB Output is correct
16 Correct 193 ms 393288 KB Output is correct
17 Correct 195 ms 393452 KB Output is correct
18 Correct 322 ms 393344 KB Output is correct
19 Correct 191 ms 393032 KB Output is correct
20 Correct 193 ms 393540 KB Output is correct
21 Correct 195 ms 393388 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 179 ms 392952 KB Output is correct
24 Correct 176 ms 392924 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 241 ms 393360 KB Output is correct
28 Correct 183 ms 392996 KB Output is correct
29 Correct 174 ms 392980 KB Output is correct
30 Correct 173 ms 392904 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 308 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Runtime error 210 ms 524292 KB Execution killed with signal 9
37 Halted 0 ms 0 KB -