oj.uz

Submission #864756

# Submission time Handle Problem Language Result Execution time Memory
864756 2023-10-23T14:26:03 Z NeroZein Passport (JOI23_passport) C++17
48 / 100
 2000 ms 40876 KB 
#include "bits/stdc++.h"
using namespace std;

#ifdef Nero
#include "Deb.h"
#else
#define deb(...)
#endif

using arr = pair<int, int>; 

const int N = 2e5 + 5;

int seg[N * 2]; 
vector<int> vec[N * 2]; 

void init() {
  for (int i = 0; i < N * 2; ++i) {
    seg[i] = N; 
  }
}

void upd(int nd, int l, int r, int p, int v) {
  if (l == r) {
    seg[nd] = v;
    return;
  }
  int mid = (l + r) >> 1;
  int rs = nd + ((mid - l + 1) << 1);
  if (p <= mid) {
    upd(nd + 1, l, mid, p, v);
  } else {
    upd(rs, mid + 1, r, p, v); 
  }
  seg[nd] = min(seg[nd + 1], seg[rs]); 
}

int qry(int nd, int l, int r, int s, int e) {
  if (l >= s && r <= e) {
    return seg[nd];
  }
  int mid = (l + r) >> 1;
  int rs = nd + ((mid - l + 1) << 1);
  if (mid >= e) {
    return qry(nd + 1, l, mid, s, e);
  } else {
    if (mid < s) {
      return qry(rs, mid + 1, r, s, e); 
    } else {
      return min(qry(nd + 1, l, mid, s, e), qry(rs, mid + 1, r, s, e)); 
    }
  }
}

void add(int nd, int l, int r, int s, int e, int x) {
  if (l >= s && r <= e) {
    vec[nd].push_back(x);
    return;
  }
  int mid = (l + r) >> 1;
  int rs = nd + ((mid - l + 1) << 1);
  if (mid >= e) {
    add(nd + 1, l, mid, s, e, x); 
  } else {
    if (mid < s) {
      add(rs, mid + 1, r, s, e, x); 
    } else {
      add(nd + 1, l, mid, s, e, x); 
      add(rs, mid + 1, r, s, e, x); 
    }
  }
}

vector<int> tv; 
void fill(int nd, int l, int r, int p) {
  for (int i : vec[nd]) {
    tv.push_back(i);
  }
  vec[nd].clear();
  if (l == r) {
    return; 
  }
  int mid = (l + r) >> 1;
  int rs = nd + ((mid - l + 1) << 1);
  if (p <= mid) {
    fill(nd + 1, l, mid, p); 
  } else {
    fill(rs, mid + 1, r, p);
  }
}

int l[N], r[N]; 
int a[N], b[N], ans[N]; 

int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n;
  cin >> n;
  for (int i = 0; i < n; ++i) {
    cin >> l[i] >> r[i]; 
    --l[i], --r[i];
  }
  vector<int> id(n);
  iota(id.begin(), id.end(), 0);
  sort(id.begin(), id.end(), [&](int i, int j) {
    return l[i] < l[j]; 
  });
  init(); 
  for (int i = 0; i < n; ++i) {
    int cur = id[i];
    if (l[cur] == 0) {
      a[cur] = 0;  
    } else {
      a[cur] = 1 + qry(0, 0, n - 1, l[cur], r[cur]); 
    }
    upd(0, 0, n - 1, cur, a[cur]); 
  }
  sort(id.begin(), id.end(), [&](int i, int j) {
    return r[i] > r[j]; 
  });
  init();
  priority_queue<arr, vector<arr>, greater<arr>> pq; 
  for (int i = 0; i < n; ++i) {
    int cur = id[i];
    if (r[cur] == n - 1) {
      b[cur] = 0; 
    } else {
      b[cur] = 1 + qry(0, 0, n - 1, l[cur], r[cur]); 
    }
    upd(0, 0, n - 1, cur, b[cur]); 
    pq.emplace(a[cur] + b[cur], cur); 
    add(0, 0, n - 1, l[cur], r[cur], cur); 
    ans[cur] = a[cur] + b[cur];
  }
  while (!pq.empty()) {
    auto [c, v] = pq.top();
    pq.pop();
    if (c > ans[v]) {
      continue;
    }
    fill(0, 0, n - 1, v); 
    for (int i : tv) {
      if (ans[v] + 1 < ans[i]) {
        ans[i] = ans[v] + 1;
        pq.emplace(ans[i], i); 
      }
    }
  }
  int q;
  cin >> q;
  while (q--) {
    int v;
    cin >> v;
    --v;
    cout << (ans[v] >= N ? -1 : ans[v] + 1) << '\n'; 
  }
  return 0;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 14940 KB Output is correct
4 Execution timed out 2093 ms 40876 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14936 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 15036 KB Output is correct
4 Correct 3 ms 14940 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 3 ms 14936 KB Output is correct
7 Correct 3 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 3 ms 14940 KB Output is correct
10 Correct 3 ms 14940 KB Output is correct
11 Correct 4 ms 15084 KB Output is correct
12 Correct 3 ms 14936 KB Output is correct
13 Correct 4 ms 15196 KB Output is correct
14 Correct 3 ms 15196 KB Output is correct
15 Correct 4 ms 14940 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14936 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 15036 KB Output is correct
4 Correct 3 ms 14940 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 3 ms 14936 KB Output is correct
7 Correct 3 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 3 ms 14940 KB Output is correct
10 Correct 3 ms 14940 KB Output is correct
11 Correct 4 ms 15084 KB Output is correct
12 Correct 3 ms 14936 KB Output is correct
13 Correct 4 ms 15196 KB Output is correct
14 Correct 3 ms 15196 KB Output is correct
15 Correct 4 ms 14940 KB Output is correct
16 Correct 35 ms 15508 KB Output is correct
17 Correct 16 ms 15196 KB Output is correct
18 Correct 36 ms 15528 KB Output is correct
19 Correct 38 ms 15448 KB Output is correct
20 Correct 11 ms 15196 KB Output is correct
21 Correct 22 ms 15448 KB Output is correct
22 Correct 8 ms 15196 KB Output is correct
23 Correct 24 ms 15440 KB Output is correct
24 Correct 35 ms 15456 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14936 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 15036 KB Output is correct
4 Correct 3 ms 14940 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 3 ms 14936 KB Output is correct
7 Correct 3 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 3 ms 14940 KB Output is correct
10 Correct 3 ms 14940 KB Output is correct
11 Correct 4 ms 15084 KB Output is correct
12 Correct 3 ms 14936 KB Output is correct
13 Correct 4 ms 15196 KB Output is correct
14 Correct 3 ms 15196 KB Output is correct
15 Correct 4 ms 14940 KB Output is correct
16 Correct 35 ms 15508 KB Output is correct
17 Correct 16 ms 15196 KB Output is correct
18 Correct 36 ms 15528 KB Output is correct
19 Correct 38 ms 15448 KB Output is correct
20 Correct 11 ms 15196 KB Output is correct
21 Correct 22 ms 15448 KB Output is correct
22 Correct 8 ms 15196 KB Output is correct
23 Correct 24 ms 15440 KB Output is correct
24 Correct 35 ms 15456 KB Output is correct
25 Correct 4 ms 15192 KB Output is correct
26 Correct 3 ms 14940 KB Output is correct
27 Correct 38 ms 15536 KB Output is correct
28 Correct 17 ms 15452 KB Output is correct
29 Correct 11 ms 15432 KB Output is correct
30 Correct 29 ms 15712 KB Output is correct
31 Correct 34 ms 15704 KB Output is correct

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 14940 KB Output is correct
4 Execution timed out 2093 ms 40876 KB Time limit exceeded
5 Halted 0 ms 0 KB -