oj.uz

답안 #156002

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
156002 2019-10-02T14:36:03 Z ASDF123 Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++14
30 / 100
 3000 ms 26840 KB 
#include <bits/stdc++.h>
//#define int long long
#define fr first
#define sc second
#define all(s) s.begin(), s.end()
#define szof(s) (int)s.size()
using namespace std;

const int N = (int)1e6 + 5;
const int INF = 1e9 + 7;
const int MOD = (int)1e9 + 7;

int tests = 1;
int n, l, r, k;
int a[N];


pair<int, int> tree[N * 4];
int pref[N];

void build(int v = 1, int tl = 1, int tr = N) {
  if (tl == tr) {
    tree[v].fr = a[tl];
    tree[v].sc = a[tl];
    return;
  }
  int mid = tl + tr >> 1;
  build(v + v, tl, mid);
  build(v + v + 1, mid + 1, tr);
  tree[v].fr = min(tree[v + v].fr, tree[v + v + 1].fr);
  tree[v].sc = max(tree[v + v].sc, tree[v + v + 1].sc);
}

pair<int, int> get(int l, int r, int v = 1, int tl = 1, int tr = N) {
  if (l <= tl && tr <= r) {
    return tree[v];
  }
  if (l > tr || tl > r) {
    return {INF, -INF};
  }
  int mid = tl + tr >> 1;
  pair<int, int> p1 = get(l, r, v + v, tl, mid);
  pair<int, int> p2 = get(l, r, v + v + 1, mid + 1, tr);
  return {min(p1.fr, p2.fr), max(p1.sc, p2.sc)};
}

int bad(int l, int r) {
  return pref[r - 1] - pref[l - 1];
}


void solve() {
  scanf("%d%d%d", &l, &r, &k);

  if (k < get(l, r).fr) {
    if (bad(l, r)) {
      puts("0");
    } else {
      puts("1");
    }
    return;
  }

  set <int> st;
  set <int> ::iterator it;
  bool ok = true;
  int mn = INF;

//  for (int i = r; i >= l; i--) {
//    if (i == r) {
//      st.insert(a[i]);
//      mn = min(mn, a[i]);
//      continue;
//    }
//    if (mn < a[i]) {
//      it = st.lower_bound(a[i]);
//      it--;
//      if (*it + a[i] > k) {
//        ok = false;
//        break;
//      }
//    }
//    st.insert(a[i]);
//    mn = min(mn, a[i]);
//  }

  for (int i = r; i >= l; i--) {
    int mx = get(l, max(l, i - 1)).sc;
    if (mx > a[i] && mx + a[i] > k) {
      ok = false;
      break;
    }
  }

  if (ok) {
    puts("1");
  } else {
    puts("0");
  }
}

main() {
  scanf("%d%d", &n, &tests);
  for (int i = 1; i <= n; i++) {
    scanf("%d", &a[i]);
  }
  build();

  for (int i = 1; i <= n; i++) {
    pref[i] = pref[i - 1] + (a[i] > a[i + 1]);
  }

//  for (int i = 1; i <= n; i++) {
//    cout << pref[i] << " ";
//  }cout << endl;
//
//  while (1) {
//    int l, r;
//    cin >> l >> r;
//    cout << get(l, r) << endl;
//  }


  while (tests--) {
    solve();
  }
}

Compilation message

sortbooks.cpp: In function 'void build(int, int, int)':
sortbooks.cpp:27:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int mid = tl + tr >> 1;
             ~~~^~~~
sortbooks.cpp: In function 'std::pair<int, int> get(int, int, int, int, int)':
sortbooks.cpp:41:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int mid = tl + tr >> 1;
             ~~~^~~~
sortbooks.cpp: In function 'void solve()':
sortbooks.cpp:67:7: warning: unused variable 'mn' [-Wunused-variable]
   int mn = INF;
       ^~
sortbooks.cpp: At global scope:
sortbooks.cpp:102:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
sortbooks.cpp: In function 'void solve()':
sortbooks.cpp:53:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &l, &r, &k);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp: In function 'int main()':
sortbooks.cpp:103:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &n, &tests);
   ~~~~~^~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:105:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &a[i]);
     ~~~~~^~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 16760 KB Output is correct
2 Correct 24 ms 16760 KB Output is correct
3 Correct 24 ms 16760 KB Output is correct
4 Correct 24 ms 16760 KB Output is correct
5 Correct 24 ms 16760 KB Output is correct
6 Correct 24 ms 16632 KB Output is correct
7 Correct 25 ms 16888 KB Output is correct
8 Correct 46 ms 16760 KB Output is correct
9 Correct 31 ms 16760 KB Output is correct
10 Correct 34 ms 16808 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 16760 KB Output is correct
2 Correct 24 ms 16760 KB Output is correct
3 Correct 24 ms 16760 KB Output is correct
4 Correct 24 ms 16760 KB Output is correct
5 Correct 24 ms 16760 KB Output is correct
6 Correct 24 ms 16632 KB Output is correct
7 Correct 25 ms 16888 KB Output is correct
8 Correct 46 ms 16760 KB Output is correct
9 Correct 31 ms 16760 KB Output is correct
10 Correct 34 ms 16808 KB Output is correct
11 Correct 30 ms 16760 KB Output is correct
12 Correct 31 ms 16760 KB Output is correct
13 Correct 34 ms 16760 KB Output is correct
14 Correct 40 ms 16888 KB Output is correct
15 Correct 35 ms 16760 KB Output is correct
16 Correct 2257 ms 16972 KB Output is correct
17 Correct 1237 ms 16968 KB Output is correct
18 Correct 757 ms 16876 KB Output is correct

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1515 ms 26840 KB Output is correct
2 Correct 1521 ms 26728 KB Output is correct
3 Correct 1501 ms 26712 KB Output is correct
4 Correct 1507 ms 26724 KB Output is correct
5 Correct 1491 ms 26668 KB Output is correct

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3092 ms 17584 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 16760 KB Output is correct
2 Correct 24 ms 16760 KB Output is correct
3 Correct 24 ms 16760 KB Output is correct
4 Correct 24 ms 16760 KB Output is correct
5 Correct 24 ms 16760 KB Output is correct
6 Correct 24 ms 16632 KB Output is correct
7 Correct 25 ms 16888 KB Output is correct
8 Correct 46 ms 16760 KB Output is correct
9 Correct 31 ms 16760 KB Output is correct
10 Correct 34 ms 16808 KB Output is correct
11 Correct 30 ms 16760 KB Output is correct
12 Correct 31 ms 16760 KB Output is correct
13 Correct 34 ms 16760 KB Output is correct
14 Correct 40 ms 16888 KB Output is correct
15 Correct 35 ms 16760 KB Output is correct
16 Correct 2257 ms 16972 KB Output is correct
17 Correct 1237 ms 16968 KB Output is correct
18 Correct 757 ms 16876 KB Output is correct
19 Execution timed out 3085 ms 18500 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 16760 KB Output is correct
2 Correct 24 ms 16760 KB Output is correct
3 Correct 24 ms 16760 KB Output is correct
4 Correct 24 ms 16760 KB Output is correct
5 Correct 24 ms 16760 KB Output is correct
6 Correct 24 ms 16632 KB Output is correct
7 Correct 25 ms 16888 KB Output is correct
8 Correct 46 ms 16760 KB Output is correct
9 Correct 31 ms 16760 KB Output is correct
10 Correct 34 ms 16808 KB Output is correct
11 Correct 30 ms 16760 KB Output is correct
12 Correct 31 ms 16760 KB Output is correct
13 Correct 34 ms 16760 KB Output is correct
14 Correct 40 ms 16888 KB Output is correct
15 Correct 35 ms 16760 KB Output is correct
16 Correct 2257 ms 16972 KB Output is correct
17 Correct 1237 ms 16968 KB Output is correct
18 Correct 757 ms 16876 KB Output is correct
19 Correct 1515 ms 26840 KB Output is correct
20 Correct 1521 ms 26728 KB Output is correct
21 Correct 1501 ms 26712 KB Output is correct
22 Correct 1507 ms 26724 KB Output is correct
23 Correct 1491 ms 26668 KB Output is correct
24 Execution timed out 3092 ms 17584 KB Time limit exceeded
25 Halted 0 ms 0 KB -