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Submission #770140

# Submission time Handle Problem Language Result Execution time Memory
770140 2023-06-30T19:49:32 Z LucaLucaM Mountains (NOI20_mountains) C++17
100 / 100
 235 ms 14116 KB 
#include <bits/stdc++.h>

typedef long long ll;

using namespace std;

const int NMAX = 3e5;

int aib[NMAX + 5];

int n;

void update (int pos, const int &val)
{
    for (; pos <= n; pos += pos & -pos)
        aib[pos] += val;
}
int query (int pos)
{
    int ret = 0;
    for (; pos; pos -= pos & -pos)
        ret += aib[pos];
    return ret;
}

ll a[NMAX + 5];
ll b[NMAX + 5];

ll ans[NMAX + 5];

int main()
{
    cin >> n;
    for (int i=1; i<=n; i++)
    {
        cin >> a[i];
        b[i] = a[i];
    }
    sort (b+1, b+n+1);
    for (int i=1; i<=n; i++)
    {
        a[i] = lower_bound(b+1, b+n+1, a[i]) - (b + 1) + 1;
    }
    for (int i=1; i<=n; i++)
    {
        ans[i] = query(a[i] - 1);
        update(a[i], +1);
    }
    memset(aib, 0, sizeof(aib));
    for (int i=n; i>0; i--)
    {
        ans[i] *= query(a[i] - 1);
        update(a[i], +1);
    }
    ll sum = 0;
    for (int i=1; i<=n; i++)
        sum += ans[i];
    cout << sum;
    return 0;
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 189 ms 14040 KB Output is correct
3 Correct 172 ms 13948 KB Output is correct
4 Correct 174 ms 13936 KB Output is correct
5 Correct 206 ms 14024 KB Output is correct
6 Correct 164 ms 13960 KB Output is correct
7 Correct 166 ms 13968 KB Output is correct
8 Correct 162 ms 13988 KB Output is correct
9 Correct 169 ms 13960 KB Output is correct
10 Correct 166 ms 14100 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 9152 KB Output is correct
2 Correct 65 ms 9084 KB Output is correct
3 Correct 64 ms 9092 KB Output is correct
4 Correct 66 ms 9032 KB Output is correct
5 Correct 73 ms 9020 KB Output is correct
6 Correct 66 ms 9028 KB Output is correct
7 Correct 67 ms 9044 KB Output is correct
8 Correct 58 ms 9088 KB Output is correct
9 Correct 57 ms 8984 KB Output is correct
10 Correct 1 ms 1492 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 9152 KB Output is correct
2 Correct 65 ms 9084 KB Output is correct
3 Correct 64 ms 9092 KB Output is correct
4 Correct 66 ms 9032 KB Output is correct
5 Correct 73 ms 9020 KB Output is correct
6 Correct 66 ms 9028 KB Output is correct
7 Correct 67 ms 9044 KB Output is correct
8 Correct 58 ms 9088 KB Output is correct
9 Correct 57 ms 8984 KB Output is correct
10 Correct 1 ms 1492 KB Output is correct
11 Correct 97 ms 9292 KB Output is correct
12 Correct 111 ms 9348 KB Output is correct
13 Correct 96 ms 9292 KB Output is correct
14 Correct 101 ms 9292 KB Output is correct
15 Correct 99 ms 9292 KB Output is correct
16 Correct 96 ms 9292 KB Output is correct
17 Correct 97 ms 9264 KB Output is correct
18 Correct 62 ms 9280 KB Output is correct
19 Correct 57 ms 9352 KB Output is correct
20 Correct 1 ms 1492 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1468 KB Output is correct
3 Correct 1 ms 1492 KB Output is correct
4 Correct 1 ms 1492 KB Output is correct
5 Correct 1 ms 1492 KB Output is correct
6 Correct 1 ms 1492 KB Output is correct
7 Correct 2 ms 1492 KB Output is correct
8 Correct 2 ms 1492 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 1 ms 1492 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1468 KB Output is correct
3 Correct 1 ms 1492 KB Output is correct
4 Correct 1 ms 1492 KB Output is correct
5 Correct 1 ms 1492 KB Output is correct
6 Correct 1 ms 1492 KB Output is correct
7 Correct 2 ms 1492 KB Output is correct
8 Correct 2 ms 1492 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 1 ms 1492 KB Output is correct
11 Correct 7 ms 1876 KB Output is correct
12 Correct 7 ms 1876 KB Output is correct
13 Correct 7 ms 1876 KB Output is correct
14 Correct 7 ms 1876 KB Output is correct
15 Correct 7 ms 1884 KB Output is correct
16 Correct 7 ms 1876 KB Output is correct
17 Correct 7 ms 1876 KB Output is correct
18 Correct 8 ms 1872 KB Output is correct
19 Correct 5 ms 1740 KB Output is correct
20 Correct 1 ms 1492 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 9152 KB Output is correct
2 Correct 65 ms 9084 KB Output is correct
3 Correct 64 ms 9092 KB Output is correct
4 Correct 66 ms 9032 KB Output is correct
5 Correct 73 ms 9020 KB Output is correct
6 Correct 66 ms 9028 KB Output is correct
7 Correct 67 ms 9044 KB Output is correct
8 Correct 58 ms 9088 KB Output is correct
9 Correct 57 ms 8984 KB Output is correct
10 Correct 1 ms 1492 KB Output is correct
11 Correct 97 ms 9292 KB Output is correct
12 Correct 111 ms 9348 KB Output is correct
13 Correct 96 ms 9292 KB Output is correct
14 Correct 101 ms 9292 KB Output is correct
15 Correct 99 ms 9292 KB Output is correct
16 Correct 96 ms 9292 KB Output is correct
17 Correct 97 ms 9264 KB Output is correct
18 Correct 62 ms 9280 KB Output is correct
19 Correct 57 ms 9352 KB Output is correct
20 Correct 1 ms 1492 KB Output is correct
21 Correct 139 ms 10172 KB Output is correct
22 Correct 147 ms 10160 KB Output is correct
23 Correct 141 ms 10120 KB Output is correct
24 Correct 146 ms 10228 KB Output is correct
25 Correct 140 ms 10232 KB Output is correct
26 Correct 143 ms 10176 KB Output is correct
27 Correct 139 ms 10120 KB Output is correct
28 Correct 87 ms 10168 KB Output is correct
29 Correct 85 ms 10156 KB Output is correct
30 Correct 1 ms 1492 KB Output is correct

Subtask #7
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 189 ms 14040 KB Output is correct
3 Correct 172 ms 13948 KB Output is correct
4 Correct 174 ms 13936 KB Output is correct
5 Correct 206 ms 14024 KB Output is correct
6 Correct 164 ms 13960 KB Output is correct
7 Correct 166 ms 13968 KB Output is correct
8 Correct 162 ms 13988 KB Output is correct
9 Correct 169 ms 13960 KB Output is correct
10 Correct 166 ms 14100 KB Output is correct
11 Correct 67 ms 9152 KB Output is correct
12 Correct 65 ms 9084 KB Output is correct
13 Correct 64 ms 9092 KB Output is correct
14 Correct 66 ms 9032 KB Output is correct
15 Correct 73 ms 9020 KB Output is correct
16 Correct 66 ms 9028 KB Output is correct
17 Correct 67 ms 9044 KB Output is correct
18 Correct 58 ms 9088 KB Output is correct
19 Correct 57 ms 8984 KB Output is correct
20 Correct 1 ms 1492 KB Output is correct
21 Correct 97 ms 9292 KB Output is correct
22 Correct 111 ms 9348 KB Output is correct
23 Correct 96 ms 9292 KB Output is correct
24 Correct 101 ms 9292 KB Output is correct
25 Correct 99 ms 9292 KB Output is correct
26 Correct 96 ms 9292 KB Output is correct
27 Correct 97 ms 9264 KB Output is correct
28 Correct 62 ms 9280 KB Output is correct
29 Correct 57 ms 9352 KB Output is correct
30 Correct 1 ms 1492 KB Output is correct
31 Correct 1 ms 1492 KB Output is correct
32 Correct 1 ms 1468 KB Output is correct
33 Correct 1 ms 1492 KB Output is correct
34 Correct 1 ms 1492 KB Output is correct
35 Correct 1 ms 1492 KB Output is correct
36 Correct 1 ms 1492 KB Output is correct
37 Correct 2 ms 1492 KB Output is correct
38 Correct 2 ms 1492 KB Output is correct
39 Correct 1 ms 1492 KB Output is correct
40 Correct 1 ms 1492 KB Output is correct
41 Correct 7 ms 1876 KB Output is correct
42 Correct 7 ms 1876 KB Output is correct
43 Correct 7 ms 1876 KB Output is correct
44 Correct 7 ms 1876 KB Output is correct
45 Correct 7 ms 1884 KB Output is correct
46 Correct 7 ms 1876 KB Output is correct
47 Correct 7 ms 1876 KB Output is correct
48 Correct 8 ms 1872 KB Output is correct
49 Correct 5 ms 1740 KB Output is correct
50 Correct 1 ms 1492 KB Output is correct
51 Correct 139 ms 10172 KB Output is correct
52 Correct 147 ms 10160 KB Output is correct
53 Correct 141 ms 10120 KB Output is correct
54 Correct 146 ms 10228 KB Output is correct
55 Correct 140 ms 10232 KB Output is correct
56 Correct 143 ms 10176 KB Output is correct
57 Correct 139 ms 10120 KB Output is correct
58 Correct 87 ms 10168 KB Output is correct
59 Correct 85 ms 10156 KB Output is correct
60 Correct 1 ms 1492 KB Output is correct
61 Correct 223 ms 14004 KB Output is correct
62 Correct 220 ms 14008 KB Output is correct
63 Correct 220 ms 14116 KB Output is correct
64 Correct 228 ms 14016 KB Output is correct
65 Correct 235 ms 14008 KB Output is correct
66 Correct 216 ms 14032 KB Output is correct
67 Correct 219 ms 14028 KB Output is correct
68 Correct 219 ms 13968 KB Output is correct
69 Correct 164 ms 10272 KB Output is correct
70 Correct 1 ms 1492 KB Output is correct