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Submission #950976

# Submission time Handle Problem Language Result Execution time Memory
950976 2024-03-21T03:23:14 Z VinhLuu Cat Exercise (JOI23_ho_t4) C++17
41 / 100
 100 ms 29264 KB 
#include <bits/stdc++.h>
#define int long long
#define pb push_back
using namespace std;

const int N = 2e5 + 5;

int n, a[N];
vector<int> p[N];

namespace sub3{
    int st[N << 1];
    int get(int l,int r){
        r++;
        int ret = 0;
        for(l += n - 1, r += n - 1; l < r; l /= 2, r /= 2){
            if(l & 1){
                if(a[ret] < a[st[l]]) ret = st[l];
                l++;
            }
            if(r & 1){
                --r;
                if(a[ret] < a[st[r]]) ret = st[r];
            }
        }
        return ret;
    }
    int dq(int l,int r){
        if(l > r) return 0;
        int u = get(l, r);
        int L = (u == l ? 0 : dq(l, u - 1) + u - get(l, u - 1));
        int R = (r == u ? 0 : dq(u + 1, r) + get(u + 1, r) - u);
        return max(L, R);
    }
    void solve(){
        for(int i = 1; i <= n; i ++){
            st[i + n - 1] = i;
        }
        for(int i = n - 1; i >= 1; i --){
            if(a[st[i << 1]] > a[st[i << 1|1]]) st[i] = st[i << 1];
            else st[i] = st[i << 1|1];
        }
        cout << dq(1, n);
    }
}

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #define task "ce"
    if(fopen(task ".inp","r")){
        freopen(task ".inp","r",stdin);
        freopen(task ".out","w",stdout);
    }
    cin >> n;
    for(int i = 1; i <= n; i ++){
        cin >> a[i];
    }
    bool ff = true;
    for(int i = 1; i < n; i ++){
        int x, y; cin >> x >> y;
        if(y != x + 1) ff = false;
        p[x].pb(y);
        p[y].pb(x);
    }
    if(ff) sub3 :: solve();
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:51:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         freopen(task ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:52:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |         freopen(task ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6584 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6616 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6584 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6616 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 1 ms 6540 KB Output is correct
15 Correct 2 ms 6624 KB Output is correct
16 Correct 1 ms 6488 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6584 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6616 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 1 ms 6540 KB Output is correct
15 Correct 2 ms 6624 KB Output is correct
16 Correct 1 ms 6488 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 7004 KB Output is correct
19 Correct 3 ms 7004 KB Output is correct
20 Correct 4 ms 7000 KB Output is correct
21 Correct 3 ms 6744 KB Output is correct
22 Correct 3 ms 6748 KB Output is correct
23 Correct 3 ms 6748 KB Output is correct
24 Correct 3 ms 6748 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6584 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6616 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 1 ms 6540 KB Output is correct
15 Correct 2 ms 6624 KB Output is correct
16 Correct 1 ms 6488 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 7004 KB Output is correct
19 Correct 3 ms 7004 KB Output is correct
20 Correct 4 ms 7000 KB Output is correct
21 Correct 3 ms 6744 KB Output is correct
22 Correct 3 ms 6748 KB Output is correct
23 Correct 3 ms 6748 KB Output is correct
24 Correct 3 ms 6748 KB Output is correct
25 Incorrect 1 ms 6488 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6584 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6616 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 1 ms 6540 KB Output is correct
15 Correct 2 ms 6624 KB Output is correct
16 Correct 1 ms 6488 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 7004 KB Output is correct
19 Correct 3 ms 7004 KB Output is correct
20 Correct 4 ms 7000 KB Output is correct
21 Correct 3 ms 6744 KB Output is correct
22 Correct 3 ms 6748 KB Output is correct
23 Correct 3 ms 6748 KB Output is correct
24 Correct 3 ms 6748 KB Output is correct
25 Correct 100 ms 29264 KB Output is correct
26 Correct 87 ms 28368 KB Output is correct
27 Correct 87 ms 28184 KB Output is correct
28 Correct 65 ms 19864 KB Output is correct
29 Correct 59 ms 19868 KB Output is correct
30 Correct 60 ms 19792 KB Output is correct
31 Correct 59 ms 19792 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 6492 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6584 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6616 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 1 ms 6540 KB Output is correct
15 Correct 2 ms 6624 KB Output is correct
16 Correct 1 ms 6488 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 7004 KB Output is correct
19 Correct 3 ms 7004 KB Output is correct
20 Correct 4 ms 7000 KB Output is correct
21 Correct 3 ms 6744 KB Output is correct
22 Correct 3 ms 6748 KB Output is correct
23 Correct 3 ms 6748 KB Output is correct
24 Correct 3 ms 6748 KB Output is correct
25 Incorrect 1 ms 6488 KB Output isn't correct
26 Halted 0 ms 0 KB -