oj.uz

Submission #680895

# Submission time Handle Problem Language Result Execution time Memory
680895 2023-01-12T01:34:47 Z DennisTran Mountains (NOI20_mountains) C++17
100 / 100
 161 ms 14340 KB 
#pragma GCC optimize("O2")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define FOD(i, a, b) for (int i = (a); i >= (b); i--)
#define REP(i, n) for (int i = 0; i < (n); i++)
#define ALL(x) (x).begin(), (x).end()
#define TIME  (1.0 * clock() / CLOCKS_PER_SEC)
#define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }

using namespace std;

const int MAXN = 3e5 + 5;

int N, L[MAXN], R[MAXN];
vector <long long> nen;
long long a[MAXN];

struct BIT{
    int bit[MAXN];
    void upd(int x, int val) {for (; x <= N; x += x &-x) bit[x] += val;}
    int get(int x) {
        int ans = 0;
        for (; x; x -= x&-x) ans += bit[x];
        return ans;
    }
} mybit;

void calc(int *val) {
    FOR(i, 1, N) {
        val[i] = mybit.get(a[i] - 1);
        mybit.upd(a[i], 1);
    }
    FOR(i, 1, N) {
        mybit.upd(a[i], -1);
    }
}

signed main(void) {
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
    //file("TASK");
    cin >> N;
    FOR(i, 1, N) cin >> a[i], nen.emplace_back(a[i]);
    sort(ALL(nen)); nen.erase(unique(ALL(nen)), nen.end());
    FOR(i, 1, N) a[i] = lower_bound(ALL(nen), a[i]) - nen.begin() + 1;

    calc(L);
    reverse(a + 1, a + N + 1);
    calc(R);
    reverse(R + 1, R + N + 1);
    long long ans = 0;
    FOR(i, 1, N) ans += 1ll * L[i] * R[i];
    cout << ans;
    cerr << "Time elapsed: " << TIME << " s.\n";
    return (0 ^ 0);
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 94 ms 14144 KB Output is correct
3 Correct 94 ms 14164 KB Output is correct
4 Correct 94 ms 14112 KB Output is correct
5 Correct 95 ms 14084 KB Output is correct
6 Correct 97 ms 14232 KB Output is correct
7 Correct 99 ms 14100 KB Output is correct
8 Correct 103 ms 14136 KB Output is correct
9 Correct 93 ms 13756 KB Output is correct
10 Correct 94 ms 13668 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 8124 KB Output is correct
2 Correct 71 ms 8060 KB Output is correct
3 Correct 70 ms 8068 KB Output is correct
4 Correct 69 ms 8056 KB Output is correct
5 Correct 70 ms 8120 KB Output is correct
6 Correct 70 ms 8120 KB Output is correct
7 Correct 72 ms 8004 KB Output is correct
8 Correct 65 ms 8112 KB Output is correct
9 Correct 65 ms 8084 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 8124 KB Output is correct
2 Correct 71 ms 8060 KB Output is correct
3 Correct 70 ms 8068 KB Output is correct
4 Correct 69 ms 8056 KB Output is correct
5 Correct 70 ms 8120 KB Output is correct
6 Correct 70 ms 8120 KB Output is correct
7 Correct 72 ms 8004 KB Output is correct
8 Correct 65 ms 8112 KB Output is correct
9 Correct 65 ms 8084 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 79 ms 8312 KB Output is correct
12 Correct 81 ms 8368 KB Output is correct
13 Correct 82 ms 8328 KB Output is correct
14 Correct 78 ms 8328 KB Output is correct
15 Correct 79 ms 8384 KB Output is correct
16 Correct 78 ms 8316 KB Output is correct
17 Correct 79 ms 8308 KB Output is correct
18 Correct 62 ms 8372 KB Output is correct
19 Correct 57 ms 8320 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 5 ms 856 KB Output is correct
12 Correct 5 ms 860 KB Output is correct
13 Correct 4 ms 860 KB Output is correct
14 Correct 5 ms 924 KB Output is correct
15 Correct 5 ms 852 KB Output is correct
16 Correct 5 ms 852 KB Output is correct
17 Correct 4 ms 852 KB Output is correct
18 Correct 5 ms 852 KB Output is correct
19 Correct 4 ms 724 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 8124 KB Output is correct
2 Correct 71 ms 8060 KB Output is correct
3 Correct 70 ms 8068 KB Output is correct
4 Correct 69 ms 8056 KB Output is correct
5 Correct 70 ms 8120 KB Output is correct
6 Correct 70 ms 8120 KB Output is correct
7 Correct 72 ms 8004 KB Output is correct
8 Correct 65 ms 8112 KB Output is correct
9 Correct 65 ms 8084 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 79 ms 8312 KB Output is correct
12 Correct 81 ms 8368 KB Output is correct
13 Correct 82 ms 8328 KB Output is correct
14 Correct 78 ms 8328 KB Output is correct
15 Correct 79 ms 8384 KB Output is correct
16 Correct 78 ms 8316 KB Output is correct
17 Correct 79 ms 8308 KB Output is correct
18 Correct 62 ms 8372 KB Output is correct
19 Correct 57 ms 8320 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 129 ms 9556 KB Output is correct
22 Correct 119 ms 9576 KB Output is correct
23 Correct 112 ms 9528 KB Output is correct
24 Correct 113 ms 9576 KB Output is correct
25 Correct 112 ms 9580 KB Output is correct
26 Correct 114 ms 9612 KB Output is correct
27 Correct 115 ms 9600 KB Output is correct
28 Correct 65 ms 9504 KB Output is correct
29 Correct 64 ms 9528 KB Output is correct
30 Correct 1 ms 340 KB Output is correct

Subtask #7
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 94 ms 14144 KB Output is correct
3 Correct 94 ms 14164 KB Output is correct
4 Correct 94 ms 14112 KB Output is correct
5 Correct 95 ms 14084 KB Output is correct
6 Correct 97 ms 14232 KB Output is correct
7 Correct 99 ms 14100 KB Output is correct
8 Correct 103 ms 14136 KB Output is correct
9 Correct 93 ms 13756 KB Output is correct
10 Correct 94 ms 13668 KB Output is correct
11 Correct 70 ms 8124 KB Output is correct
12 Correct 71 ms 8060 KB Output is correct
13 Correct 70 ms 8068 KB Output is correct
14 Correct 69 ms 8056 KB Output is correct
15 Correct 70 ms 8120 KB Output is correct
16 Correct 70 ms 8120 KB Output is correct
17 Correct 72 ms 8004 KB Output is correct
18 Correct 65 ms 8112 KB Output is correct
19 Correct 65 ms 8084 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 79 ms 8312 KB Output is correct
22 Correct 81 ms 8368 KB Output is correct
23 Correct 82 ms 8328 KB Output is correct
24 Correct 78 ms 8328 KB Output is correct
25 Correct 79 ms 8384 KB Output is correct
26 Correct 78 ms 8316 KB Output is correct
27 Correct 79 ms 8308 KB Output is correct
28 Correct 62 ms 8372 KB Output is correct
29 Correct 57 ms 8320 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 0 ms 340 KB Output is correct
41 Correct 5 ms 856 KB Output is correct
42 Correct 5 ms 860 KB Output is correct
43 Correct 4 ms 860 KB Output is correct
44 Correct 5 ms 924 KB Output is correct
45 Correct 5 ms 852 KB Output is correct
46 Correct 5 ms 852 KB Output is correct
47 Correct 4 ms 852 KB Output is correct
48 Correct 5 ms 852 KB Output is correct
49 Correct 4 ms 724 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 129 ms 9556 KB Output is correct
52 Correct 119 ms 9576 KB Output is correct
53 Correct 112 ms 9528 KB Output is correct
54 Correct 113 ms 9576 KB Output is correct
55 Correct 112 ms 9580 KB Output is correct
56 Correct 114 ms 9612 KB Output is correct
57 Correct 115 ms 9600 KB Output is correct
58 Correct 65 ms 9504 KB Output is correct
59 Correct 64 ms 9528 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 160 ms 14340 KB Output is correct
62 Correct 152 ms 14192 KB Output is correct
63 Correct 153 ms 14100 KB Output is correct
64 Correct 151 ms 14212 KB Output is correct
65 Correct 153 ms 14228 KB Output is correct
66 Correct 152 ms 14140 KB Output is correct
67 Correct 150 ms 14156 KB Output is correct
68 Correct 161 ms 13696 KB Output is correct
69 Correct 118 ms 9744 KB Output is correct
70 Correct 0 ms 336 KB Output is correct