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Submission #470774

# Submission time Handle Problem Language Result Execution time Memory
470774 2021-09-05T14:17:05 Z nobik Safety (NOI18_safety) C++14
100 / 100
 279 ms 21680 KB 
// https://oj.uz/problem/view/NOI18_safety
#include <bits/stdc++.h>
// #include <atcoder/all>

using namespace std;
// using namespace atcoder;

#define REP(i, n) for (int i = 0; i < (n); ++i)
#define SZ(a) ((int)(a).size())
#define ALL(a) (a).begin(), (a).end()

using ll = long long;
using vi = vector<int>;
using vvi = vector<vi>;
// using mint = modint998244353;

constexpr int kInf = 1000 * 1000 * 1000 + 7;
constexpr long long kInfLL = 1e18;

struct TaggedSet {
  multiset<long long> s;
  long long add{};

  void Insert(long long x) { s.insert(x - add); }
  void Erase(long long x) { s.erase(s.find(x - add)); }
  long long Min() { return *s.begin() + add; }
  long long Max() { return *s.rbegin() + add; }
  void Add(long long x) { add += x; }
  bool Empty() { return s.empty(); }
};

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  int n, h;
  cin >> n >> h;

  vi a(n);
  REP(i, n) cin >> a[i];

  TaggedSet neg, pos;
  neg.Insert(a[0]);
  pos.Insert(a[0]);

  long long result{};
  for (int i = 1; i < n; ++i) {
    neg.Add(-h); pos.Add(h);
    while (!neg.Empty() && neg.Min() < 0) neg.Erase(neg.Min());
    if (neg.Empty()) neg.Insert(0);
    if (pos.Empty()) pos.Insert(0);
    long long mn = pos.Min();
    int l = a[i], r = a[i];
    if (l <= mn) {
      neg.Insert(l);
    } else {
      pos.Insert(l);
      pos.Erase(mn);
      neg.Insert(mn);
      result += l - mn;
    }
    long long mx = neg.Max();
    if (mx <= r) {
      pos.Insert(r);
    } else {
      neg.Insert(r);
      neg.Erase(mx);
      pos.Insert(mx);
      result += mx - r;
    }
  }

  cout << result << '\n';
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 312 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 153 ms 13008 KB Output is correct
2 Correct 221 ms 20364 KB Output is correct
3 Correct 279 ms 21284 KB Output is correct

Subtask #5
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 312 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 308 KB Output is correct

Subtask #7
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 312 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 308 KB Output is correct
28 Correct 3 ms 588 KB Output is correct
29 Correct 3 ms 716 KB Output is correct
30 Correct 2 ms 460 KB Output is correct
31 Correct 2 ms 452 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 2 ms 460 KB Output is correct
34 Correct 2 ms 580 KB Output is correct

Subtask #8
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 1 ms 316 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 312 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 308 KB Output is correct
34 Correct 3 ms 588 KB Output is correct
35 Correct 3 ms 716 KB Output is correct
36 Correct 2 ms 460 KB Output is correct
37 Correct 2 ms 452 KB Output is correct
38 Correct 2 ms 460 KB Output is correct
39 Correct 2 ms 460 KB Output is correct
40 Correct 2 ms 580 KB Output is correct
41 Correct 3 ms 844 KB Output is correct
42 Correct 3 ms 716 KB Output is correct
43 Correct 2 ms 588 KB Output is correct
44 Correct 3 ms 588 KB Output is correct
45 Correct 2 ms 584 KB Output is correct
46 Correct 2 ms 460 KB Output is correct

Subtask #9
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 153 ms 13008 KB Output is correct
20 Correct 221 ms 20364 KB Output is correct
21 Correct 279 ms 21284 KB Output is correct
22 Correct 1 ms 316 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 312 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 308 KB Output is correct
37 Correct 3 ms 588 KB Output is correct
38 Correct 3 ms 716 KB Output is correct
39 Correct 2 ms 460 KB Output is correct
40 Correct 2 ms 452 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 2 ms 580 KB Output is correct
44 Correct 3 ms 844 KB Output is correct
45 Correct 3 ms 716 KB Output is correct
46 Correct 2 ms 588 KB Output is correct
47 Correct 3 ms 588 KB Output is correct
48 Correct 2 ms 584 KB Output is correct
49 Correct 2 ms 460 KB Output is correct
50 Correct 220 ms 21680 KB Output is correct
51 Correct 178 ms 18016 KB Output is correct
52 Correct 75 ms 9888 KB Output is correct
53 Correct 89 ms 11524 KB Output is correct
54 Correct 99 ms 11804 KB Output is correct
55 Correct 86 ms 10028 KB Output is correct
56 Correct 77 ms 11060 KB Output is correct
57 Correct 75 ms 10152 KB Output is correct
58 Correct 63 ms 8284 KB Output is correct
59 Correct 81 ms 11220 KB Output is correct