oj.uz

Submission #559288

# Submission time Handle Problem Language Result Execution time Memory
559288 2022-05-09T15:02:55 Z leaked Pastiri (COI20_pastiri) C++17
0 / 100
 662 ms 81904 KB 
#include <bits/stdc++.h>

#define f first
#define s second
#define m_p make_pair
#define vec vector
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define sz(x) (int)(x).size()
#define pw(x) (1LL<<(x))

using namespace std;
typedef pair<int,int> pii;
typedef long long ll;
template<class T> bool umax(T &a,const T &b){return (a<b?a=b,1:0);}
template<class T> bool umin(T &a,const T &b){return (a>b?a=b,1:0);}
const int N=5e5+1;
vec<int> gr[N];
bool used[N];
vec<int> g[N];
int d[N];
vec<int> have[N];
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    fill(d,d+N,1e9);
    int n,k;
    cin>>n>>k;
    for(int i=1;i<n;i++){
        int v,u;
        cin>>v>>u;
        g[v].pb(u);g[u].pb(v);
    }
    queue<int>q;
    for(int i=0;i<k;i++){
        int v;
        cin>>v;
        d[v]=0;
        q.push(v);
    }
//    vec<int> vc;
    while(!q.empty()){
        int v=q.front();q.pop();
        for(auto &z : g[v]){
            if(d[z]==1e9){
                d[z]=d[v]+1;
                q.push(z);
            }
        }
    }
    for(int i=1;i<=n;i++){
        for(auto &z : g[i]){
            if(d[i]==d[z]+1)
                gr[i].pb(z);
        }
        have[d[i]].pb(i);
    }
    vec<int> ans;
//    vecE<
    for(int i=n-1;i>=0;i--){
        for(auto &z : have[i]){
            if(!used[z]){
                used[z]=1;
                ans.pb(z);
            }
            for(auto &u : gr[z])
                used[u]=1;
        }
    }
    cout<<sz(ans)<<endl;
    for(auto &z : ans)
        cout<<z<<' ';
    return 0;
}
/*
16 5
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
*/

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 192 ms 81904 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 37844 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 ms 37652 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# Verdict Execution time Memory Grader output
1 Incorrect 662 ms 73236 KB Output isn't correct
2 Halted 0 ms 0 KB -