oj.uz

Submission #677293

# Submission time Handle Problem Language Result Execution time Memory
677293 2023-01-02T18:05:21 Z dsyz Mountains (NOI20_mountains) C++17
100 / 100
 145 ms 16704 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define MAXN (300005)
struct plot {
  ll fw[MAXN];
  plot() {
    memset(fw,0,sizeof fw);
  }
  void update(int x,ll nval) {
    for(;x<MAXN;x+=x&(-x)) fw[x]+=nval;
  }
  ll aaa(int x) {
    ll res = 0;
    for(;x;x-=x&(-x)) res += fw[x];
    return res;
  }
  ll sum(int a,int b) {
    return aaa(b) - aaa(a-1);
  }
} before, after;
ll N;
int main(){
  ios_base::sync_with_stdio(false);cin.tie(0);
  cin>>N;
  ll arr[N];
  ll ans = 0;
  vector<ll> d;
  for(ll i = 0;i < N;i++){
    cin>>arr[i];
    d.push_back(arr[i]);
  }
  sort(d.begin(),d.end());
  d.resize(unique(d.begin(),d.end()) - d.begin());
  for(ll i = 0;i < N;i++) arr[i] = (lower_bound(d.begin(), d.end(), arr[i]) - d.begin() + 1);
  for(ll i = 0;i < N;i++){
    before.update(arr[i],1);
  }
  for(ll i = N - 1;i >= 0;i--){
    ans += (before.sum(1,arr[i] - 1) * after.sum(1,arr[i] - 1));
    before.update(arr[i],-1);
    after.update(arr[i],1);
  }
  cout<<ans<<'\n';
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 93 ms 16460 KB Output is correct
3 Correct 94 ms 16488 KB Output is correct
4 Correct 92 ms 16472 KB Output is correct
5 Correct 90 ms 16496 KB Output is correct
6 Correct 91 ms 16544 KB Output is correct
7 Correct 90 ms 16508 KB Output is correct
8 Correct 99 ms 16544 KB Output is correct
9 Correct 91 ms 16580 KB Output is correct
10 Correct 89 ms 16604 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 12132 KB Output is correct
2 Correct 62 ms 12168 KB Output is correct
3 Correct 63 ms 12096 KB Output is correct
4 Correct 62 ms 12108 KB Output is correct
5 Correct 62 ms 12068 KB Output is correct
6 Correct 62 ms 12108 KB Output is correct
7 Correct 63 ms 12172 KB Output is correct
8 Correct 59 ms 12120 KB Output is correct
9 Correct 62 ms 12180 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 12132 KB Output is correct
2 Correct 62 ms 12168 KB Output is correct
3 Correct 63 ms 12096 KB Output is correct
4 Correct 62 ms 12108 KB Output is correct
5 Correct 62 ms 12068 KB Output is correct
6 Correct 62 ms 12108 KB Output is correct
7 Correct 63 ms 12172 KB Output is correct
8 Correct 59 ms 12120 KB Output is correct
9 Correct 62 ms 12180 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 71 ms 12436 KB Output is correct
12 Correct 70 ms 12440 KB Output is correct
13 Correct 72 ms 12404 KB Output is correct
14 Correct 71 ms 12364 KB Output is correct
15 Correct 78 ms 12356 KB Output is correct
16 Correct 73 ms 12356 KB Output is correct
17 Correct 76 ms 12448 KB Output is correct
18 Correct 54 ms 12476 KB Output is correct
19 Correct 59 ms 12356 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 5028 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 5028 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 6 ms 5460 KB Output is correct
12 Correct 7 ms 5412 KB Output is correct
13 Correct 8 ms 5388 KB Output is correct
14 Correct 8 ms 5384 KB Output is correct
15 Correct 6 ms 5400 KB Output is correct
16 Correct 7 ms 5412 KB Output is correct
17 Correct 7 ms 5416 KB Output is correct
18 Correct 8 ms 5452 KB Output is correct
19 Correct 6 ms 5320 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 12132 KB Output is correct
2 Correct 62 ms 12168 KB Output is correct
3 Correct 63 ms 12096 KB Output is correct
4 Correct 62 ms 12108 KB Output is correct
5 Correct 62 ms 12068 KB Output is correct
6 Correct 62 ms 12108 KB Output is correct
7 Correct 63 ms 12172 KB Output is correct
8 Correct 59 ms 12120 KB Output is correct
9 Correct 62 ms 12180 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 71 ms 12436 KB Output is correct
12 Correct 70 ms 12440 KB Output is correct
13 Correct 72 ms 12404 KB Output is correct
14 Correct 71 ms 12364 KB Output is correct
15 Correct 78 ms 12356 KB Output is correct
16 Correct 73 ms 12356 KB Output is correct
17 Correct 76 ms 12448 KB Output is correct
18 Correct 54 ms 12476 KB Output is correct
19 Correct 59 ms 12356 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 110 ms 13204 KB Output is correct
22 Correct 113 ms 13256 KB Output is correct
23 Correct 115 ms 13236 KB Output is correct
24 Correct 111 ms 13124 KB Output is correct
25 Correct 111 ms 13152 KB Output is correct
26 Correct 111 ms 13200 KB Output is correct
27 Correct 109 ms 13252 KB Output is correct
28 Correct 60 ms 13156 KB Output is correct
29 Correct 63 ms 13260 KB Output is correct
30 Correct 2 ms 4948 KB Output is correct

Subtask #7
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 93 ms 16460 KB Output is correct
3 Correct 94 ms 16488 KB Output is correct
4 Correct 92 ms 16472 KB Output is correct
5 Correct 90 ms 16496 KB Output is correct
6 Correct 91 ms 16544 KB Output is correct
7 Correct 90 ms 16508 KB Output is correct
8 Correct 99 ms 16544 KB Output is correct
9 Correct 91 ms 16580 KB Output is correct
10 Correct 89 ms 16604 KB Output is correct
11 Correct 62 ms 12132 KB Output is correct
12 Correct 62 ms 12168 KB Output is correct
13 Correct 63 ms 12096 KB Output is correct
14 Correct 62 ms 12108 KB Output is correct
15 Correct 62 ms 12068 KB Output is correct
16 Correct 62 ms 12108 KB Output is correct
17 Correct 63 ms 12172 KB Output is correct
18 Correct 59 ms 12120 KB Output is correct
19 Correct 62 ms 12180 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 71 ms 12436 KB Output is correct
22 Correct 70 ms 12440 KB Output is correct
23 Correct 72 ms 12404 KB Output is correct
24 Correct 71 ms 12364 KB Output is correct
25 Correct 78 ms 12356 KB Output is correct
26 Correct 73 ms 12356 KB Output is correct
27 Correct 76 ms 12448 KB Output is correct
28 Correct 54 ms 12476 KB Output is correct
29 Correct 59 ms 12356 KB Output is correct
30 Correct 3 ms 4948 KB Output is correct
31 Correct 2 ms 4948 KB Output is correct
32 Correct 3 ms 4992 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 2 ms 4948 KB Output is correct
35 Correct 2 ms 4948 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 2 ms 5028 KB Output is correct
38 Correct 2 ms 4948 KB Output is correct
39 Correct 2 ms 4948 KB Output is correct
40 Correct 2 ms 4948 KB Output is correct
41 Correct 6 ms 5460 KB Output is correct
42 Correct 7 ms 5412 KB Output is correct
43 Correct 8 ms 5388 KB Output is correct
44 Correct 8 ms 5384 KB Output is correct
45 Correct 6 ms 5400 KB Output is correct
46 Correct 7 ms 5412 KB Output is correct
47 Correct 7 ms 5416 KB Output is correct
48 Correct 8 ms 5452 KB Output is correct
49 Correct 6 ms 5320 KB Output is correct
50 Correct 3 ms 4948 KB Output is correct
51 Correct 110 ms 13204 KB Output is correct
52 Correct 113 ms 13256 KB Output is correct
53 Correct 115 ms 13236 KB Output is correct
54 Correct 111 ms 13124 KB Output is correct
55 Correct 111 ms 13152 KB Output is correct
56 Correct 111 ms 13200 KB Output is correct
57 Correct 109 ms 13252 KB Output is correct
58 Correct 60 ms 13156 KB Output is correct
59 Correct 63 ms 13260 KB Output is correct
60 Correct 2 ms 4948 KB Output is correct
61 Correct 142 ms 16532 KB Output is correct
62 Correct 145 ms 16504 KB Output is correct
63 Correct 143 ms 16584 KB Output is correct
64 Correct 141 ms 16560 KB Output is correct
65 Correct 138 ms 16516 KB Output is correct
66 Correct 143 ms 16580 KB Output is correct
67 Correct 139 ms 16552 KB Output is correct
68 Correct 136 ms 16704 KB Output is correct
69 Correct 110 ms 13344 KB Output is correct
70 Correct 2 ms 4948 KB Output is correct