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답안 #527511

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
527511 2022-02-17T14:21:22 Z Kipras Tax Evasion (LMIO19_mokesciai) C++17
100 / 100
 443 ms 55652 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxN = 2e5+10;
const int maxLog = 32;

int n, m;
vector<int> adj[maxN];
int dep[maxN]={0};
int par[maxN][maxLog]={0};
int best[maxN];

void dfs(int v, int u){
    dep[v]=dep[u]+1;
    par[v][0]=u;
    for(auto i : adj[v]){
        if(i==u)continue;
        dfs(i, v);
    }
}

int lift(int p, int x){
    for(int i = 0; i < maxLog; i++){
        if(x&(1<<i)){
            p=par[p][i];
        }
    }
    return p;
}
bool isPossible;

int possible(int v, int u, int val){
    int counter=0;
    for(auto i : adj[v]){
        if(i==u)continue;
        counter+=possible(i, v, val);
    }
    if(dep[v]>=val-1)counter++;
    if(counter<best[v]){isPossible=false;/*cout<<v<<" "<<val<<" "<<best[v]<<" "<<counter<<"bbb"<<endl;*/};
    counter-=best[v];
    return counter;
}

int solve(){
    int l=0, h=n;
    while(l<h-1){
        int mid = l+(h-l)/2;
        //cout<<mid<<" "<<l<<" "<<h<<endl;
        isPossible=true;
        possible(1, 0, mid);
        if(isPossible)l=mid;
        else h=mid-1;
    }
    isPossible=true;
    possible(1, 0, h+1);
    if(isPossible)return h+1;
    isPossible=true;
    possible(1, 0, h);
    if(isPossible)return h;
    isPossible=true;
    possible(1, 0, h-1);
    if(isPossible)return h-1;
}

int main()
{

    ios_base::sync_with_stdio(0);cin.tie(nullptr);

    cin>>n>>m;
    for(int i = 2; i <= n; i++){
        int aa;
        cin>>aa;
        adj[aa].push_back(i);
        adj[i].push_back(aa);
    }

    dep[0]=-1;
    par[0][0]=0;
    dfs(1, 0);

    for(int i = 1; i < maxLog; i++)for(int x = 1; x <= n; x++)par[x][i]=par[par[x][i-1]][i-1];

    for(int i = 1; i <= m; i++){
        int aa;
        cin>>aa;
        //cout<<lift(aa, (dep[i]-1)/2)<<" "<<(dep[i]-1)/2<<endl;
        best[lift(aa, (dep[aa]-1)/2)]++;
    }//cout<<endl;

    cout<<solve();

    return 0;
}

Compilation message

mokesciai.cpp: In function 'int solve()':
mokesciai.cpp:64:1: warning: control reaches end of non-void function [-Wreturn-type]
   64 | }
      | ^

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 6 ms 6188 KB Output is correct
4 Correct 5 ms 6220 KB Output is correct
5 Correct 5 ms 6188 KB Output is correct
6 Correct 188 ms 53984 KB Output is correct
7 Correct 196 ms 54084 KB Output is correct
8 Correct 5 ms 6128 KB Output is correct
9 Correct 319 ms 55208 KB Output is correct
10 Correct 361 ms 55652 KB Output is correct
11 Correct 266 ms 54664 KB Output is correct

Subtask #2
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 188 ms 53984 KB Output is correct
2 Correct 196 ms 54084 KB Output is correct
3 Correct 5 ms 6128 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 5 ms 5988 KB Output is correct
6 Correct 5 ms 5964 KB Output is correct
7 Correct 5 ms 5804 KB Output is correct
8 Correct 5 ms 5936 KB Output is correct
9 Correct 5 ms 5828 KB Output is correct
10 Correct 145 ms 44840 KB Output is correct
11 Correct 159 ms 45008 KB Output is correct
12 Correct 301 ms 38328 KB Output is correct
13 Correct 190 ms 46088 KB Output is correct
14 Correct 133 ms 38228 KB Output is correct
15 Correct 315 ms 38560 KB Output is correct
16 Correct 186 ms 46096 KB Output is correct
17 Correct 427 ms 38380 KB Output is correct
18 Correct 190 ms 47728 KB Output is correct
19 Correct 181 ms 39264 KB Output is correct
20 Correct 208 ms 38688 KB Output is correct
21 Correct 197 ms 38384 KB Output is correct
22 Correct 202 ms 38584 KB Output is correct
23 Correct 224 ms 38340 KB Output is correct
24 Correct 203 ms 38276 KB Output is correct

Subtask #3
39.0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 6 ms 6188 KB Output is correct
4 Correct 5 ms 6220 KB Output is correct
5 Correct 5 ms 6188 KB Output is correct
6 Correct 3 ms 5012 KB Output is correct
7 Correct 5 ms 5988 KB Output is correct
8 Correct 5 ms 5964 KB Output is correct
9 Correct 5 ms 5804 KB Output is correct
10 Correct 5 ms 5936 KB Output is correct
11 Correct 5 ms 5828 KB Output is correct
12 Correct 5 ms 6128 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 5020 KB Output is correct
16 Correct 3 ms 5016 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 4 ms 5932 KB Output is correct
19 Correct 5 ms 5928 KB Output is correct
20 Correct 5 ms 6040 KB Output is correct
21 Correct 5 ms 5836 KB Output is correct
22 Correct 5 ms 5804 KB Output is correct
23 Correct 5 ms 5932 KB Output is correct
24 Correct 5 ms 5832 KB Output is correct
25 Correct 6 ms 5964 KB Output is correct
26 Correct 5 ms 5804 KB Output is correct
27 Correct 5 ms 6060 KB Output is correct
28 Correct 5 ms 6056 KB Output is correct
29 Correct 5 ms 5836 KB Output is correct
30 Correct 8 ms 6092 KB Output is correct
31 Correct 6 ms 5836 KB Output is correct
32 Correct 5 ms 5736 KB Output is correct
33 Correct 4 ms 5600 KB Output is correct

Subtask #4
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 5020 KB Output is correct
4 Correct 3 ms 5016 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 4 ms 5932 KB Output is correct
7 Correct 5 ms 5928 KB Output is correct
8 Correct 5 ms 6040 KB Output is correct
9 Correct 5 ms 5836 KB Output is correct
10 Correct 5 ms 5804 KB Output is correct
11 Correct 5 ms 5932 KB Output is correct
12 Correct 5 ms 5832 KB Output is correct
13 Correct 6 ms 5964 KB Output is correct
14 Correct 5 ms 5804 KB Output is correct
15 Correct 5 ms 6060 KB Output is correct
16 Correct 5 ms 6056 KB Output is correct
17 Correct 5 ms 5836 KB Output is correct
18 Correct 8 ms 6092 KB Output is correct
19 Correct 6 ms 5836 KB Output is correct
20 Correct 5 ms 5736 KB Output is correct
21 Correct 4 ms 5600 KB Output is correct
22 Correct 3 ms 4940 KB Output is correct
23 Correct 2 ms 4940 KB Output is correct
24 Correct 6 ms 6188 KB Output is correct
25 Correct 5 ms 6220 KB Output is correct
26 Correct 5 ms 6188 KB Output is correct
27 Correct 3 ms 5012 KB Output is correct
28 Correct 5 ms 5988 KB Output is correct
29 Correct 5 ms 5964 KB Output is correct
30 Correct 5 ms 5804 KB Output is correct
31 Correct 5 ms 5936 KB Output is correct
32 Correct 5 ms 5828 KB Output is correct
33 Correct 188 ms 53984 KB Output is correct
34 Correct 196 ms 54084 KB Output is correct
35 Correct 5 ms 6128 KB Output is correct
36 Correct 145 ms 44840 KB Output is correct
37 Correct 159 ms 45008 KB Output is correct
38 Correct 301 ms 38328 KB Output is correct
39 Correct 190 ms 46088 KB Output is correct
40 Correct 133 ms 38228 KB Output is correct
41 Correct 315 ms 38560 KB Output is correct
42 Correct 186 ms 46096 KB Output is correct
43 Correct 427 ms 38380 KB Output is correct
44 Correct 190 ms 47728 KB Output is correct
45 Correct 181 ms 39264 KB Output is correct
46 Correct 208 ms 38688 KB Output is correct
47 Correct 197 ms 38384 KB Output is correct
48 Correct 202 ms 38584 KB Output is correct
49 Correct 224 ms 38340 KB Output is correct
50 Correct 203 ms 38276 KB Output is correct
51 Correct 319 ms 55208 KB Output is correct
52 Correct 361 ms 55652 KB Output is correct
53 Correct 266 ms 54664 KB Output is correct
54 Correct 152 ms 45084 KB Output is correct
55 Correct 156 ms 45292 KB Output is correct
56 Correct 214 ms 47164 KB Output is correct
57 Correct 175 ms 38760 KB Output is correct
58 Correct 282 ms 38368 KB Output is correct
59 Correct 237 ms 42436 KB Output is correct
60 Correct 368 ms 39716 KB Output is correct
61 Correct 335 ms 47556 KB Output is correct
62 Correct 443 ms 39384 KB Output is correct
63 Correct 241 ms 48548 KB Output is correct
64 Correct 209 ms 39876 KB Output is correct
65 Correct 225 ms 39064 KB Output is correct
66 Correct 260 ms 39656 KB Output is correct
67 Correct 240 ms 39316 KB Output is correct
68 Correct 252 ms 39084 KB Output is correct
69 Correct 269 ms 39592 KB Output is correct
70 Correct 91 ms 22752 KB Output is correct
71 Correct 176 ms 42176 KB Output is correct