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답안 #285689

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
285689 2020-08-29T12:25:59 Z NintsiChkhaidze Mountains (NOI20_mountains) C++14
100 / 100
 513 ms 16248 KB 
#include <bits/stdc++.h>
#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define pb push_back
#define f first
#define s second
#define ll long long
#define int long long
#define mod 1000000007
#define N 300005
using namespace std;
int a[300005],fen[4][300005],X[300005];
pair<int,int> d[300005];
void upd(int x,int idx){
    while (idx < N){
        fen[x][idx]+=1;
        idx += (idx&(-idx));
    }
}
int get(int x,int idx){
    int sum=0;
    while (idx > 0){
        sum += fen[x][idx];
        idx -= (idx&(-idx));
    }
    return sum;
}
main (){
    int n;
    cin>>n;
    for (int i=1;i<=n;i++){
        cin>>a[i];
        d[i].f = a[i],d[i].s = i;
    }
    sort(d+1,d+n+1);
    int m=1;
    for (int i=1;i<=n;i++){
        if (i > 1 && d[i - 1].f < d[i].f) m++;
        a[d[i].s] = m;
    }
    for (int i=1;i<=n;i++){
        if (a[i] > 1) X[i] = get(1,a[i] - 1);
        upd(1,a[i]);
    }
    int ans=0;
    for (int i=n;i>=1;i--){
        m=0;
        if (a[i] == 1) X[i]=0;
        else m = get(2,a[i - 1]),X[i] *= get(2,a[i] - 1);
        
        ans+=X[i];
        upd(2,a[i]);
    }
    cout<<ans;
}

Compilation message

Mountains.cpp:27:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   27 | main (){
      |       ^

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 471 ms 15096 KB Output is correct
3 Correct 473 ms 16132 KB Output is correct
4 Correct 472 ms 16140 KB Output is correct
5 Correct 473 ms 16120 KB Output is correct
6 Correct 475 ms 16248 KB Output is correct
7 Correct 472 ms 15992 KB Output is correct
8 Correct 469 ms 16120 KB Output is correct
9 Correct 477 ms 13944 KB Output is correct
10 Correct 475 ms 13816 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 141 ms 10440 KB Output is correct
2 Correct 154 ms 10376 KB Output is correct
3 Correct 158 ms 10360 KB Output is correct
4 Correct 144 ms 10492 KB Output is correct
5 Correct 163 ms 10360 KB Output is correct
6 Correct 153 ms 10452 KB Output is correct
7 Correct 147 ms 10488 KB Output is correct
8 Correct 128 ms 10364 KB Output is correct
9 Correct 125 ms 10360 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 141 ms 10440 KB Output is correct
2 Correct 154 ms 10376 KB Output is correct
3 Correct 158 ms 10360 KB Output is correct
4 Correct 144 ms 10492 KB Output is correct
5 Correct 163 ms 10360 KB Output is correct
6 Correct 153 ms 10452 KB Output is correct
7 Correct 147 ms 10488 KB Output is correct
8 Correct 128 ms 10364 KB Output is correct
9 Correct 125 ms 10360 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 172 ms 10640 KB Output is correct
12 Correct 167 ms 10616 KB Output is correct
13 Correct 164 ms 10616 KB Output is correct
14 Correct 175 ms 10584 KB Output is correct
15 Correct 165 ms 10616 KB Output is correct
16 Correct 166 ms 10600 KB Output is correct
17 Correct 166 ms 10744 KB Output is correct
18 Correct 142 ms 10620 KB Output is correct
19 Correct 139 ms 10668 KB Output is correct
20 Correct 1 ms 384 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 17 ms 1024 KB Output is correct
12 Correct 22 ms 1016 KB Output is correct
13 Correct 17 ms 1024 KB Output is correct
14 Correct 18 ms 1024 KB Output is correct
15 Correct 17 ms 1024 KB Output is correct
16 Correct 17 ms 1024 KB Output is correct
17 Correct 17 ms 1024 KB Output is correct
18 Correct 17 ms 1024 KB Output is correct
19 Correct 7 ms 768 KB Output is correct
20 Correct 1 ms 384 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 141 ms 10440 KB Output is correct
2 Correct 154 ms 10376 KB Output is correct
3 Correct 158 ms 10360 KB Output is correct
4 Correct 144 ms 10492 KB Output is correct
5 Correct 163 ms 10360 KB Output is correct
6 Correct 153 ms 10452 KB Output is correct
7 Correct 147 ms 10488 KB Output is correct
8 Correct 128 ms 10364 KB Output is correct
9 Correct 125 ms 10360 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 172 ms 10640 KB Output is correct
12 Correct 167 ms 10616 KB Output is correct
13 Correct 164 ms 10616 KB Output is correct
14 Correct 175 ms 10584 KB Output is correct
15 Correct 165 ms 10616 KB Output is correct
16 Correct 166 ms 10600 KB Output is correct
17 Correct 166 ms 10744 KB Output is correct
18 Correct 142 ms 10620 KB Output is correct
19 Correct 139 ms 10668 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 248 ms 11976 KB Output is correct
22 Correct 237 ms 11964 KB Output is correct
23 Correct 235 ms 12024 KB Output is correct
24 Correct 232 ms 12024 KB Output is correct
25 Correct 229 ms 12024 KB Output is correct
26 Correct 229 ms 12024 KB Output is correct
27 Correct 229 ms 12024 KB Output is correct
28 Correct 197 ms 12024 KB Output is correct
29 Correct 196 ms 12024 KB Output is correct
30 Correct 1 ms 512 KB Output is correct

Subtask #7
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 471 ms 15096 KB Output is correct
3 Correct 473 ms 16132 KB Output is correct
4 Correct 472 ms 16140 KB Output is correct
5 Correct 473 ms 16120 KB Output is correct
6 Correct 475 ms 16248 KB Output is correct
7 Correct 472 ms 15992 KB Output is correct
8 Correct 469 ms 16120 KB Output is correct
9 Correct 477 ms 13944 KB Output is correct
10 Correct 475 ms 13816 KB Output is correct
11 Correct 141 ms 10440 KB Output is correct
12 Correct 154 ms 10376 KB Output is correct
13 Correct 158 ms 10360 KB Output is correct
14 Correct 144 ms 10492 KB Output is correct
15 Correct 163 ms 10360 KB Output is correct
16 Correct 153 ms 10452 KB Output is correct
17 Correct 147 ms 10488 KB Output is correct
18 Correct 128 ms 10364 KB Output is correct
19 Correct 125 ms 10360 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 172 ms 10640 KB Output is correct
22 Correct 167 ms 10616 KB Output is correct
23 Correct 164 ms 10616 KB Output is correct
24 Correct 175 ms 10584 KB Output is correct
25 Correct 165 ms 10616 KB Output is correct
26 Correct 166 ms 10600 KB Output is correct
27 Correct 166 ms 10744 KB Output is correct
28 Correct 142 ms 10620 KB Output is correct
29 Correct 139 ms 10668 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 512 KB Output is correct
32 Correct 1 ms 512 KB Output is correct
33 Correct 1 ms 512 KB Output is correct
34 Correct 1 ms 512 KB Output is correct
35 Correct 2 ms 512 KB Output is correct
36 Correct 1 ms 512 KB Output is correct
37 Correct 2 ms 512 KB Output is correct
38 Correct 1 ms 512 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 17 ms 1024 KB Output is correct
42 Correct 22 ms 1016 KB Output is correct
43 Correct 17 ms 1024 KB Output is correct
44 Correct 18 ms 1024 KB Output is correct
45 Correct 17 ms 1024 KB Output is correct
46 Correct 17 ms 1024 KB Output is correct
47 Correct 17 ms 1024 KB Output is correct
48 Correct 17 ms 1024 KB Output is correct
49 Correct 7 ms 768 KB Output is correct
50 Correct 1 ms 384 KB Output is correct
51 Correct 248 ms 11976 KB Output is correct
52 Correct 237 ms 11964 KB Output is correct
53 Correct 235 ms 12024 KB Output is correct
54 Correct 232 ms 12024 KB Output is correct
55 Correct 229 ms 12024 KB Output is correct
56 Correct 229 ms 12024 KB Output is correct
57 Correct 229 ms 12024 KB Output is correct
58 Correct 197 ms 12024 KB Output is correct
59 Correct 196 ms 12024 KB Output is correct
60 Correct 1 ms 512 KB Output is correct
61 Correct 505 ms 16024 KB Output is correct
62 Correct 506 ms 16248 KB Output is correct
63 Correct 503 ms 15972 KB Output is correct
64 Correct 508 ms 16120 KB Output is correct
65 Correct 513 ms 16120 KB Output is correct
66 Correct 506 ms 15992 KB Output is correct
67 Correct 509 ms 16248 KB Output is correct
68 Correct 509 ms 13780 KB Output is correct
69 Correct 239 ms 12652 KB Output is correct
70 Correct 1 ms 384 KB Output is correct