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답안 #216900

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
216900 2020-03-28T10:45:57 Z quocnguyen1012 Mountains (NOI20_mountains) C++14
100 / 100
 189 ms 14216 KB 
#include <bits/stdc++.h>

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define eb emplace_back

using namespace std;
typedef long long ll;
typedef pair<int, int> ii;

const int maxn = 3e5 + 5;

int BIT[maxn];

void upd(int i, int v)
{
  for(; i < maxn; i += i & -i)
    BIT[i] += v;
}

int sum(int i)
{
  int res = 0;
  for(; i; i -= i & -i)
    res += BIT[i];
  return res;
}

signed main(void)
{
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  #ifdef LOCAL
    freopen("A.INP", "r", stdin);
    freopen("A.OUT", "w", stdout);
  #endif // LOCAL
  int n; cin >> n;
  vector<ll> a(n); vector<int> l(n), r(n);
  vector<ll> val;
  for(auto & x : a) cin >> x;
  val = a;
  sort(val.begin(), val.end()); val.erase(unique(val.begin(), val.end()), val.end());
  for(auto & x: a){
    x = lower_bound(val.begin(), val.end(), x) - val.begin() + 1;
  }
  for(int i = 0; i < n; ++i){
    l[i] = sum(a[i] - 1);
    upd(a[i], 1);
  }
  for(auto & x : a) upd(x, -1);
  ll res = 0;
  for(int i = n - 1; i >= 0; --i){
    res += 1ll * sum(a[i] - 1) * l[i];
    upd(a[i], 1);
  }
  cout << res;
}

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 117 ms 14072 KB Output is correct
3 Correct 118 ms 14204 KB Output is correct
4 Correct 114 ms 14076 KB Output is correct
5 Correct 115 ms 14200 KB Output is correct
6 Correct 120 ms 14196 KB Output is correct
7 Correct 133 ms 14088 KB Output is correct
8 Correct 116 ms 14072 KB Output is correct
9 Correct 115 ms 13432 KB Output is correct
10 Correct 116 ms 13560 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 79 ms 8184 KB Output is correct
2 Correct 72 ms 8060 KB Output is correct
3 Correct 72 ms 8056 KB Output is correct
4 Correct 71 ms 8064 KB Output is correct
5 Correct 70 ms 8056 KB Output is correct
6 Correct 77 ms 8056 KB Output is correct
7 Correct 74 ms 8064 KB Output is correct
8 Correct 69 ms 8064 KB Output is correct
9 Correct 69 ms 8064 KB Output is correct
10 Correct 5 ms 384 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 79 ms 8184 KB Output is correct
2 Correct 72 ms 8060 KB Output is correct
3 Correct 72 ms 8056 KB Output is correct
4 Correct 71 ms 8064 KB Output is correct
5 Correct 70 ms 8056 KB Output is correct
6 Correct 77 ms 8056 KB Output is correct
7 Correct 74 ms 8064 KB Output is correct
8 Correct 69 ms 8064 KB Output is correct
9 Correct 69 ms 8064 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 87 ms 8312 KB Output is correct
12 Correct 99 ms 8440 KB Output is correct
13 Correct 87 ms 8312 KB Output is correct
14 Correct 85 ms 8312 KB Output is correct
15 Correct 87 ms 8320 KB Output is correct
16 Correct 93 ms 8312 KB Output is correct
17 Correct 85 ms 8312 KB Output is correct
18 Correct 62 ms 8312 KB Output is correct
19 Correct 60 ms 8320 KB Output is correct
20 Correct 5 ms 384 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 10 ms 768 KB Output is correct
12 Correct 9 ms 896 KB Output is correct
13 Correct 9 ms 768 KB Output is correct
14 Correct 9 ms 768 KB Output is correct
15 Correct 9 ms 896 KB Output is correct
16 Correct 12 ms 768 KB Output is correct
17 Correct 9 ms 896 KB Output is correct
18 Correct 9 ms 768 KB Output is correct
19 Correct 8 ms 640 KB Output is correct
20 Correct 5 ms 384 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 79 ms 8184 KB Output is correct
2 Correct 72 ms 8060 KB Output is correct
3 Correct 72 ms 8056 KB Output is correct
4 Correct 71 ms 8064 KB Output is correct
5 Correct 70 ms 8056 KB Output is correct
6 Correct 77 ms 8056 KB Output is correct
7 Correct 74 ms 8064 KB Output is correct
8 Correct 69 ms 8064 KB Output is correct
9 Correct 69 ms 8064 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 87 ms 8312 KB Output is correct
12 Correct 99 ms 8440 KB Output is correct
13 Correct 87 ms 8312 KB Output is correct
14 Correct 85 ms 8312 KB Output is correct
15 Correct 87 ms 8320 KB Output is correct
16 Correct 93 ms 8312 KB Output is correct
17 Correct 85 ms 8312 KB Output is correct
18 Correct 62 ms 8312 KB Output is correct
19 Correct 60 ms 8320 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 137 ms 9592 KB Output is correct
22 Correct 136 ms 9464 KB Output is correct
23 Correct 138 ms 9464 KB Output is correct
24 Correct 138 ms 9596 KB Output is correct
25 Correct 142 ms 9464 KB Output is correct
26 Correct 136 ms 9592 KB Output is correct
27 Correct 138 ms 9592 KB Output is correct
28 Correct 85 ms 9464 KB Output is correct
29 Correct 85 ms 9464 KB Output is correct
30 Correct 4 ms 384 KB Output is correct

Subtask #7
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 117 ms 14072 KB Output is correct
3 Correct 118 ms 14204 KB Output is correct
4 Correct 114 ms 14076 KB Output is correct
5 Correct 115 ms 14200 KB Output is correct
6 Correct 120 ms 14196 KB Output is correct
7 Correct 133 ms 14088 KB Output is correct
8 Correct 116 ms 14072 KB Output is correct
9 Correct 115 ms 13432 KB Output is correct
10 Correct 116 ms 13560 KB Output is correct
11 Correct 79 ms 8184 KB Output is correct
12 Correct 72 ms 8060 KB Output is correct
13 Correct 72 ms 8056 KB Output is correct
14 Correct 71 ms 8064 KB Output is correct
15 Correct 70 ms 8056 KB Output is correct
16 Correct 77 ms 8056 KB Output is correct
17 Correct 74 ms 8064 KB Output is correct
18 Correct 69 ms 8064 KB Output is correct
19 Correct 69 ms 8064 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 87 ms 8312 KB Output is correct
22 Correct 99 ms 8440 KB Output is correct
23 Correct 87 ms 8312 KB Output is correct
24 Correct 85 ms 8312 KB Output is correct
25 Correct 87 ms 8320 KB Output is correct
26 Correct 93 ms 8312 KB Output is correct
27 Correct 85 ms 8312 KB Output is correct
28 Correct 62 ms 8312 KB Output is correct
29 Correct 60 ms 8320 KB Output is correct
30 Correct 5 ms 384 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 5 ms 384 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 5 ms 384 KB Output is correct
37 Correct 5 ms 384 KB Output is correct
38 Correct 5 ms 384 KB Output is correct
39 Correct 5 ms 384 KB Output is correct
40 Correct 4 ms 384 KB Output is correct
41 Correct 10 ms 768 KB Output is correct
42 Correct 9 ms 896 KB Output is correct
43 Correct 9 ms 768 KB Output is correct
44 Correct 9 ms 768 KB Output is correct
45 Correct 9 ms 896 KB Output is correct
46 Correct 12 ms 768 KB Output is correct
47 Correct 9 ms 896 KB Output is correct
48 Correct 9 ms 768 KB Output is correct
49 Correct 8 ms 640 KB Output is correct
50 Correct 5 ms 384 KB Output is correct
51 Correct 137 ms 9592 KB Output is correct
52 Correct 136 ms 9464 KB Output is correct
53 Correct 138 ms 9464 KB Output is correct
54 Correct 138 ms 9596 KB Output is correct
55 Correct 142 ms 9464 KB Output is correct
56 Correct 136 ms 9592 KB Output is correct
57 Correct 138 ms 9592 KB Output is correct
58 Correct 85 ms 9464 KB Output is correct
59 Correct 85 ms 9464 KB Output is correct
60 Correct 4 ms 384 KB Output is correct
61 Correct 189 ms 14216 KB Output is correct
62 Correct 180 ms 14216 KB Output is correct
63 Correct 178 ms 14072 KB Output is correct
64 Correct 180 ms 14072 KB Output is correct
65 Correct 178 ms 14072 KB Output is correct
66 Correct 181 ms 14072 KB Output is correct
67 Correct 180 ms 14072 KB Output is correct
68 Correct 181 ms 13576 KB Output is correct
69 Correct 141 ms 9720 KB Output is correct
70 Correct 5 ms 384 KB Output is correct