oj.uz

Submission #404818

# Submission time Handle Problem Language Result Execution time Memory
404818 2021-05-15T05:19:40 Z dvdg6566 Meetings 2 (JOI21_meetings2) C++14
20 / 100
 284 ms 1092 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pi;
typedef vector<ll> vi;
typedef vector<pi> vpi;
#define pb emplace_back
#define f first 
#define s second
#define mp make_pair
#define SZ(x) (ll)x.size()
#define ALL(x) x.begin(),x.end()
#define lb lower_bound
#define ub upper_bound

const ll MAXN=5010;

ll N,a,b,c,d,Q;
vi V[MAXN];
ll ans;
ll p[MAXN];
ll sub[MAXN];
ll small[MAXN];
ll A[MAXN];
ll out[MAXN];

ll dfs(ll x,ll pa){
    sub[x]=1;
    p[x]=pa;
    for(auto v:V[x])if(v!=pa)sub[x]+=dfs(v,x);
    return sub[x];
}

void dfs2(ll x,ll d,ll pa){
    if(A[x])ans=max(ans,d);
    for(auto v:V[x])if(v!=pa)dfs2(v,d+1,x);
}

int main(){
    cin>>N;
    for(ll i=1;i<N;++i){
        cin>>a>>b;
        V[a].pb(b);
        V[b].pb(a);
    }    
    dfs(1,-1);
    for(ll i=1;i<=N;++i){
        b=N-sub[i];
        for(auto j:V[i])if(j!=p[i]){
            b=max(b,sub[j]);
        }
        small[i]=N-b; // everything except biggest subtree
    }
    // for(ll i=1;i<=N;++i)cerr<<small[i]<<' ';cerr<<'\n';
    vpi nodes;
    for(ll i=1;i<=N;++i)nodes.pb(small[i],i);
    sort(ALL(nodes));

    for(ll i=(N/2)*2; i>=2;i-=2){
        while(SZ(nodes)&&nodes.back().f>=i/2){
            pi t=nodes.back();nodes.pop_back();
            A[t.s]=1;
            // cerr<<"Adding "<<t.s<<'\n';
            dfs2(t.s,1,-1);
        }
        out[i]=ans;
    }
    for(int i=1;i<=N;++i){
        if(i%2)cout<<1<<'\n';
        else cout<<out[i]<<'\n';
    }
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 432 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 420 KB Output is correct
15 Correct 1 ms 420 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 420 KB Output is correct
21 Correct 1 ms 332 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 432 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 420 KB Output is correct
15 Correct 1 ms 420 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 420 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 253 ms 880 KB Output is correct
23 Correct 245 ms 896 KB Output is correct
24 Correct 235 ms 892 KB Output is correct
25 Correct 236 ms 844 KB Output is correct
26 Correct 260 ms 892 KB Output is correct
27 Correct 236 ms 844 KB Output is correct
28 Correct 244 ms 868 KB Output is correct
29 Correct 248 ms 888 KB Output is correct
30 Correct 284 ms 884 KB Output is correct
31 Correct 245 ms 880 KB Output is correct
32 Correct 235 ms 1092 KB Output is correct
33 Correct 191 ms 972 KB Output is correct
34 Correct 200 ms 884 KB Output is correct
35 Correct 146 ms 892 KB Output is correct
36 Correct 184 ms 844 KB Output is correct
37 Correct 144 ms 888 KB Output is correct
38 Correct 150 ms 952 KB Output is correct

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 432 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 420 KB Output is correct
15 Correct 1 ms 420 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 420 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 253 ms 880 KB Output is correct
23 Correct 245 ms 896 KB Output is correct
24 Correct 235 ms 892 KB Output is correct
25 Correct 236 ms 844 KB Output is correct
26 Correct 260 ms 892 KB Output is correct
27 Correct 236 ms 844 KB Output is correct
28 Correct 244 ms 868 KB Output is correct
29 Correct 248 ms 888 KB Output is correct
30 Correct 284 ms 884 KB Output is correct
31 Correct 245 ms 880 KB Output is correct
32 Correct 235 ms 1092 KB Output is correct
33 Correct 191 ms 972 KB Output is correct
34 Correct 200 ms 884 KB Output is correct
35 Correct 146 ms 892 KB Output is correct
36 Correct 184 ms 844 KB Output is correct
37 Correct 144 ms 888 KB Output is correct
38 Correct 150 ms 952 KB Output is correct
39 Runtime error 1 ms 588 KB Execution killed with signal 11
40 Halted 0 ms 0 KB -