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Submission #144999

# Submission time Handle Problem Language Result Execution time Memory
144999 2019-08-18T11:03:35 Z brcode Tax Evasion (LMIO19_mokesciai) C++14
100 / 100
 428 ms 67408 KB 
#include <iostream>
#include <queue>
#include <vector>
#include <algorithm>
using namespace std;
int ans;
const int MAXN = 5e5+5;
int sl[MAXN];
int depth[MAXN];
vector<int> ord;
int sr[MAXN];
int p[25][MAXN];
vector<int> v1[MAXN];
int arr[MAXN];
bool coin[MAXN];
int timer;
vector<int> query[MAXN];
void eulertour(int curr){
    ord.push_back(curr);
     sl[curr] = timer++;
    for(int x:v1[curr]){
       eulertour(x);
    }
    sr[curr] = timer;
}
int ancestor(int curr,int level){
    for(int i=20;i>=0;i--){
        if(level-(1<<i)>=0){
            level-=(1<<i);
            curr = p[i][curr];
        }
    }
    return curr;
}
int main(){
    int n,k;
    cin>>n>>k;
    for(int i=1;i<n;i++){
        cin>>arr[i];
    }
    for(int i=1;i<=k;i++){
        int x;
        cin>>x;
        coin[x] = true;
    }
    for(int i=2;i<=n;i++){
        p[0][i] = arr[i-1];
        depth[i] = depth[p[0][i]]+1;
        v1[p[0][i]].push_back(i);
    }
    for(int i=1;i<=20;i++){
        for(int j=1;j<=n;j++){
            p[i][j] = p[i-1][p[i-1][j]];
        }
    }
    eulertour(1);
    if(coin[1]){
        cout<<1<<endl;
        return 0;
    }
    int l =0;
    int r = n;
    for(int i=2;i<=n;i++){
        if(!coin[i]){
            continue;
        }
        int pos = ancestor(i,(depth[i]-1)/2);
       
        query[sl[pos]].push_back(sr[pos]);
    }
    while(l<=r){
        int mid = (l+r)/2;
        priority_queue<int,vector<int>, greater<int> > pq;
        bool ok = true;
        for(int i=0;i<n && ok;i++){
            for(int j:query[i]){
                pq.push(j);
                
                
                //timer value(sorts by latest node in the subtree)
            }
            
            if(depth[ord[i]]>=mid && !pq.empty()){
                int u = pq.top();
                pq.pop();
                
                if(u<=i){
                    ok = false;
                   
                }
            }
        }
        
        if(!pq.empty()){
            ok = false;
        }
        
        if(ok){
            l = mid+1;
            ans = mid;
        }else{
            r = mid-1;
        }
    }
    cout<<ans+1<<endl;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 24056 KB Output is correct
2 Correct 23 ms 24028 KB Output is correct
3 Correct 29 ms 25080 KB Output is correct
4 Correct 30 ms 25080 KB Output is correct
5 Correct 29 ms 24924 KB Output is correct
6 Correct 179 ms 61296 KB Output is correct
7 Correct 183 ms 61420 KB Output is correct
8 Correct 27 ms 24924 KB Output is correct
9 Correct 396 ms 66768 KB Output is correct
10 Correct 428 ms 67408 KB Output is correct
11 Correct 312 ms 64524 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 24056 KB Output is correct
2 Correct 26 ms 24824 KB Output is correct
3 Correct 26 ms 24824 KB Output is correct
4 Correct 26 ms 24568 KB Output is correct
5 Correct 27 ms 24684 KB Output is correct
6 Correct 26 ms 24696 KB Output is correct
7 Correct 179 ms 61296 KB Output is correct
8 Correct 183 ms 61420 KB Output is correct
9 Correct 27 ms 24924 KB Output is correct
10 Correct 168 ms 53644 KB Output is correct
11 Correct 167 ms 53664 KB Output is correct
12 Correct 164 ms 48104 KB Output is correct
13 Correct 177 ms 54764 KB Output is correct
14 Correct 164 ms 48792 KB Output is correct
15 Correct 168 ms 48348 KB Output is correct
16 Correct 181 ms 54860 KB Output is correct
17 Correct 211 ms 49092 KB Output is correct
18 Correct 175 ms 57632 KB Output is correct
19 Correct 184 ms 52752 KB Output is correct
20 Correct 222 ms 52316 KB Output is correct
21 Correct 209 ms 52360 KB Output is correct
22 Correct 225 ms 52460 KB Output is correct
23 Correct 219 ms 51692 KB Output is correct
24 Correct 194 ms 52232 KB Output is correct

Subtask #3
39.0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 24056 KB Output is correct
2 Correct 23 ms 24056 KB Output is correct
3 Correct 27 ms 23928 KB Output is correct
4 Correct 24 ms 24056 KB Output is correct
5 Correct 23 ms 23928 KB Output is correct
6 Correct 27 ms 24696 KB Output is correct
7 Correct 28 ms 24824 KB Output is correct
8 Correct 33 ms 24824 KB Output is correct
9 Correct 28 ms 24696 KB Output is correct
10 Correct 26 ms 24568 KB Output is correct
11 Correct 26 ms 24824 KB Output is correct
12 Correct 28 ms 24696 KB Output is correct
13 Correct 30 ms 24824 KB Output is correct
14 Correct 28 ms 24824 KB Output is correct
15 Correct 28 ms 24952 KB Output is correct
16 Correct 28 ms 24952 KB Output is correct
17 Correct 27 ms 24696 KB Output is correct
18 Correct 31 ms 24952 KB Output is correct
19 Correct 28 ms 24824 KB Output is correct
20 Correct 27 ms 24568 KB Output is correct
21 Correct 26 ms 24540 KB Output is correct
22 Correct 23 ms 24056 KB Output is correct
23 Correct 23 ms 24028 KB Output is correct
24 Correct 29 ms 25080 KB Output is correct
25 Correct 30 ms 25080 KB Output is correct
26 Correct 29 ms 24924 KB Output is correct
27 Correct 28 ms 24056 KB Output is correct
28 Correct 26 ms 24824 KB Output is correct
29 Correct 26 ms 24824 KB Output is correct
30 Correct 26 ms 24568 KB Output is correct
31 Correct 27 ms 24684 KB Output is correct
32 Correct 26 ms 24696 KB Output is correct
33 Correct 27 ms 24924 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 24056 KB Output is correct
2 Correct 23 ms 24056 KB Output is correct
3 Correct 27 ms 23928 KB Output is correct
4 Correct 24 ms 24056 KB Output is correct
5 Correct 23 ms 23928 KB Output is correct
6 Correct 27 ms 24696 KB Output is correct
7 Correct 28 ms 24824 KB Output is correct
8 Correct 33 ms 24824 KB Output is correct
9 Correct 28 ms 24696 KB Output is correct
10 Correct 26 ms 24568 KB Output is correct
11 Correct 26 ms 24824 KB Output is correct
12 Correct 28 ms 24696 KB Output is correct
13 Correct 30 ms 24824 KB Output is correct
14 Correct 28 ms 24824 KB Output is correct
15 Correct 28 ms 24952 KB Output is correct
16 Correct 28 ms 24952 KB Output is correct
17 Correct 27 ms 24696 KB Output is correct
18 Correct 31 ms 24952 KB Output is correct
19 Correct 28 ms 24824 KB Output is correct
20 Correct 27 ms 24568 KB Output is correct
21 Correct 26 ms 24540 KB Output is correct
22 Correct 23 ms 24056 KB Output is correct
23 Correct 23 ms 24028 KB Output is correct
24 Correct 29 ms 25080 KB Output is correct
25 Correct 30 ms 25080 KB Output is correct
26 Correct 29 ms 24924 KB Output is correct
27 Correct 28 ms 24056 KB Output is correct
28 Correct 26 ms 24824 KB Output is correct
29 Correct 26 ms 24824 KB Output is correct
30 Correct 26 ms 24568 KB Output is correct
31 Correct 27 ms 24684 KB Output is correct
32 Correct 26 ms 24696 KB Output is correct
33 Correct 179 ms 61296 KB Output is correct
34 Correct 183 ms 61420 KB Output is correct
35 Correct 27 ms 24924 KB Output is correct
36 Correct 168 ms 53644 KB Output is correct
37 Correct 167 ms 53664 KB Output is correct
38 Correct 164 ms 48104 KB Output is correct
39 Correct 177 ms 54764 KB Output is correct
40 Correct 164 ms 48792 KB Output is correct
41 Correct 168 ms 48348 KB Output is correct
42 Correct 181 ms 54860 KB Output is correct
43 Correct 211 ms 49092 KB Output is correct
44 Correct 175 ms 57632 KB Output is correct
45 Correct 184 ms 52752 KB Output is correct
46 Correct 222 ms 52316 KB Output is correct
47 Correct 209 ms 52360 KB Output is correct
48 Correct 225 ms 52460 KB Output is correct
49 Correct 219 ms 51692 KB Output is correct
50 Correct 194 ms 52232 KB Output is correct
51 Correct 396 ms 66768 KB Output is correct
52 Correct 428 ms 67408 KB Output is correct
53 Correct 312 ms 64524 KB Output is correct
54 Correct 214 ms 54452 KB Output is correct
55 Correct 209 ms 54380 KB Output is correct
56 Correct 291 ms 57056 KB Output is correct
57 Correct 257 ms 50880 KB Output is correct
58 Correct 165 ms 48108 KB Output is correct
59 Correct 417 ms 54284 KB Output is correct
60 Correct 244 ms 50668 KB Output is correct
61 Correct 318 ms 59352 KB Output is correct
62 Correct 293 ms 51176 KB Output is correct
63 Correct 275 ms 60080 KB Output is correct
64 Correct 275 ms 54124 KB Output is correct
65 Correct 236 ms 53480 KB Output is correct
66 Correct 278 ms 54880 KB Output is correct
67 Correct 282 ms 54652 KB Output is correct
68 Correct 273 ms 53884 KB Output is correct
69 Correct 332 ms 56576 KB Output is correct
70 Correct 170 ms 38820 KB Output is correct
71 Correct 266 ms 54328 KB Output is correct