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Submission #1119058

# Submission time Handle Problem Language Result Execution time Memory
1119058 2024-11-26T14:24:22 Z stefanneagu Cat Exercise (JOI23_ho_t4) C++17
41 / 100
 106 ms 19544 KB 
#include <bits/stdc++.h>

using namespace std;

const int nmax = 2e5 + 1;

int v[nmax], n;

struct AINT {
  int ma[nmax * 4], ai[nmax * 4];

  void build(int nod = 1, int st = 1, int dr = n) {
    if(st == dr) {
      ma[nod] = v[st];
      ai[nod] = st;
      return;
    }
    int mid = (st + dr) / 2;
    build(nod * 2, st, mid);
    build(nod * 2 + 1, mid + 1, dr);
    if(ma[nod * 2] > ma[nod * 2 + 1]) {
      ma[nod] = ma[nod * 2];
      ai[nod] = ai[nod * 2];
    } else {
      ma[nod] = ma[nod * 2 + 1];
      ai[nod] = ai[nod * 2 + 1];
    }
  }

  int query(int l, int r, int nod = 1, int st = 1, int dr = n) {
    if(dr < l || r < st)  {
      return 0;
    }
    if(l <= st && dr <= r) {
      return ai[nod];
    }
    int mid = (st + dr) / 2;
    int i1 = query(l, r, nod * 2, st, mid);
    int i2 = query(l, r, nod * 2 + 1, mid + 1, dr);
    if(v[i1] > v[i2]) {
      return i1;
    }
    return i2;
  }
} st;

int d[nmax];
long long maxx = 0;

void solve(int l, int r, int loc, long long curr) {
  if(l == r) {
    maxx = max(maxx, curr);
    return;
  }
  int x;
  if(loc == 0) {
    // stanga
    x = st.query(l + 1, r);
    solve(l + 1, x, 1, curr + x - l);
    solve(x, r, 0, curr + x - l);
  } else {
    //dreapta
    x = st.query(l, r - 1);
    solve(l, x, 1, curr + r - x);
    solve(x, r - 1, 0, curr + r - x);
  }
}

int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cin >> n;
  int pn;
  for(int i = 1; i <= n; i++) {
    cin >> v[i];
    if(v[i] == n) {
      pn = i;
    }
  }
  for(int i = 1; i < n; i++) {
    int useless;
    cin >> useless >> useless;
  }
  st.build();
  solve(1, pn, 1, 0);
  solve(pn, n, 0, 0);
  cout << maxx;
  return 0;
}

Compilation message

Main.cpp: In function 'int32_t main()':
Main.cpp:86:8: warning: 'pn' may be used uninitialized in this function [-Wmaybe-uninitialized]
   86 |   solve(pn, n, 0, 0);
      |   ~~~~~^~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 2 ms 4432 KB Output is correct
3 Correct 2 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 2 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 2 ms 4432 KB Output is correct
3 Correct 2 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 2 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 2 ms 4432 KB Output is correct
12 Correct 1 ms 4432 KB Output is correct
13 Correct 1 ms 4432 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 2 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 2 ms 4432 KB Output is correct
3 Correct 2 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 2 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 2 ms 4432 KB Output is correct
12 Correct 1 ms 4432 KB Output is correct
13 Correct 1 ms 4432 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 2 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 3 ms 4688 KB Output is correct
19 Correct 2 ms 4688 KB Output is correct
20 Correct 5 ms 4688 KB Output is correct
21 Correct 3 ms 4600 KB Output is correct
22 Correct 3 ms 4432 KB Output is correct
23 Correct 2 ms 4432 KB Output is correct
24 Correct 3 ms 4432 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 2 ms 4432 KB Output is correct
3 Correct 2 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 2 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 2 ms 4432 KB Output is correct
12 Correct 1 ms 4432 KB Output is correct
13 Correct 1 ms 4432 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 2 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 3 ms 4688 KB Output is correct
19 Correct 2 ms 4688 KB Output is correct
20 Correct 5 ms 4688 KB Output is correct
21 Correct 3 ms 4600 KB Output is correct
22 Correct 3 ms 4432 KB Output is correct
23 Correct 2 ms 4432 KB Output is correct
24 Correct 3 ms 4432 KB Output is correct
25 Correct 1 ms 4432 KB Output is correct
26 Incorrect 3 ms 4432 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 2 ms 4432 KB Output is correct
3 Correct 2 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 2 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 2 ms 4432 KB Output is correct
12 Correct 1 ms 4432 KB Output is correct
13 Correct 1 ms 4432 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 2 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 3 ms 4688 KB Output is correct
19 Correct 2 ms 4688 KB Output is correct
20 Correct 5 ms 4688 KB Output is correct
21 Correct 3 ms 4600 KB Output is correct
22 Correct 3 ms 4432 KB Output is correct
23 Correct 2 ms 4432 KB Output is correct
24 Correct 3 ms 4432 KB Output is correct
25 Correct 104 ms 16668 KB Output is correct
26 Correct 101 ms 19532 KB Output is correct
27 Correct 106 ms 19544 KB Output is correct
28 Correct 75 ms 11088 KB Output is correct
29 Correct 80 ms 11104 KB Output is correct
30 Correct 81 ms 11184 KB Output is correct
31 Correct 70 ms 11084 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB Output is correct
2 Incorrect 1 ms 4432 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 2 ms 4432 KB Output is correct
3 Correct 2 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 2 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 2 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 2 ms 4432 KB Output is correct
12 Correct 1 ms 4432 KB Output is correct
13 Correct 1 ms 4432 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 2 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 3 ms 4688 KB Output is correct
19 Correct 2 ms 4688 KB Output is correct
20 Correct 5 ms 4688 KB Output is correct
21 Correct 3 ms 4600 KB Output is correct
22 Correct 3 ms 4432 KB Output is correct
23 Correct 2 ms 4432 KB Output is correct
24 Correct 3 ms 4432 KB Output is correct
25 Correct 1 ms 4432 KB Output is correct
26 Incorrect 3 ms 4432 KB Output isn't correct
27 Halted 0 ms 0 KB -