답안 #677293

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
677293	2023-01-02T18:05:21 Z	dsyz	Mountains (NOI20_mountains)	C++17	100 / 100	145 ms	16704 KB

Mountains

#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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

답안 #677293

Compilation message

Subtask #1 2.0 / 2.0

Subtask #2 4.0 / 4.0

Subtask #3 9.0 / 9.0

Subtask #4 36.0 / 36.0

Subtask #5 28.0 / 28.0

Subtask #6 9.0 / 9.0

Subtask #7 12.0 / 12.0

Subtask #1
2.0 / 2.0

Subtask #2
4.0 / 4.0

Subtask #3
9.0 / 9.0

Subtask #4
36.0 / 36.0

Subtask #5
28.0 / 28.0

Subtask #6
9.0 / 9.0

Subtask #7
12.0 / 12.0