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Submission #577119

# Submission time Handle Problem Language Result Execution time Memory
577119 2022-06-14T06:42:12 Z eecs Exercise Deadlines (CCO20_day1problem2) C++17
25 / 25
 91 ms 6192 KB 
#include <bits/stdc++.h>
using namespace std;

const int maxn = 200010;
int n, d[maxn], p[maxn];

#define mid ((l + r) >> 1)
#define ls (k << 1)
#define rs (k << 1 | 1)
int mx[maxn << 2];

void build(int k, int l, int r) {
    if (l == r) { mx[k] = d[l]; return; }
    build(ls, l, mid), build(rs, mid + 1, r);
    mx[k] = max(mx[ls], mx[rs]);
}

void upd(int k, int l, int r, int p) {
    if (l == r) { mx[k] = 0; return; }
    mid >= p ? upd(ls, l, mid, p) : upd(rs, mid + 1, r, p);
    mx[k] = max(mx[ls], mx[rs]);
}

int find(int k, int l, int r, int v) {
    if (l == r) return l;
    return mx[rs] >= v ? find(rs, mid + 1, r, v) : find(ls, l, mid, v);
}

namespace BIT {
int c[maxn];

void add(int p, int v) {
    for (; p <= n; p += p & -p) c[p] += v;
}

int sum(int p) {
    int s = 0;
    for (; p; p -= p & -p) s += c[p];
    return s;
}
} // namespace BIT

int main() {
    ios::sync_with_stdio(0), cin.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> d[i];
    }
    build(1, 1, n);
    for (int i = n; i; i--) {
        if (mx[1] < i) puts("-1"), exit(0);
        int j = find(1, 1, n, i);
        p[j] = i, upd(1, 1, n, j);
    }
    long long ans = 0;
    for (int i = n; i; i--) {
        ans += BIT::sum(p[i]), BIT::add(p[i], 1);
    }
    cout << ans << "\n";
    return 0;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 2 ms 500 KB Output is correct
5 Correct 2 ms 472 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 3 ms 488 KB Output is correct
8 Correct 3 ms 464 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 3 ms 596 KB Output is correct
11 Correct 2 ms 468 KB Output is correct
12 Correct 2 ms 492 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 2 ms 468 KB Output is correct
21 Correct 2 ms 492 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 3 ms 468 KB Output is correct
24 Correct 3 ms 596 KB Output is correct
25 Correct 3 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 2 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 2 ms 468 KB Output is correct
37 Correct 2 ms 468 KB Output is correct
38 Correct 2 ms 468 KB Output is correct
39 Correct 2 ms 472 KB Output is correct
40 Correct 2 ms 472 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 2 ms 468 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 0 ms 340 KB Output is correct
45 Correct 0 ms 340 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 2 ms 500 KB Output is correct
5 Correct 2 ms 472 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 3 ms 488 KB Output is correct
8 Correct 3 ms 464 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 3 ms 596 KB Output is correct
11 Correct 2 ms 468 KB Output is correct
12 Correct 2 ms 492 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 2 ms 468 KB Output is correct
21 Correct 2 ms 492 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 3 ms 468 KB Output is correct
24 Correct 3 ms 596 KB Output is correct
25 Correct 3 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 2 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 2 ms 468 KB Output is correct
37 Correct 2 ms 468 KB Output is correct
38 Correct 2 ms 468 KB Output is correct
39 Correct 2 ms 472 KB Output is correct
40 Correct 2 ms 472 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 2 ms 468 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 0 ms 340 KB Output is correct
45 Correct 0 ms 340 KB Output is correct
46 Correct 64 ms 6008 KB Output is correct
47 Correct 63 ms 5924 KB Output is correct
48 Correct 55 ms 6040 KB Output is correct
49 Correct 69 ms 6192 KB Output is correct
50 Correct 77 ms 5956 KB Output is correct
51 Correct 64 ms 5992 KB Output is correct
52 Correct 78 ms 5972 KB Output is correct
53 Correct 84 ms 6068 KB Output is correct
54 Correct 86 ms 5924 KB Output is correct
55 Correct 54 ms 5964 KB Output is correct
56 Correct 68 ms 5876 KB Output is correct
57 Correct 68 ms 5964 KB Output is correct
58 Correct 91 ms 5880 KB Output is correct
59 Correct 88 ms 6036 KB Output is correct
60 Correct 74 ms 5964 KB Output is correct
61 Correct 66 ms 5924 KB Output is correct
62 Correct 64 ms 5964 KB Output is correct
63 Correct 71 ms 5972 KB Output is correct
64 Correct 82 ms 5960 KB Output is correct
65 Correct 75 ms 5928 KB Output is correct
66 Correct 68 ms 5972 KB Output is correct
67 Correct 62 ms 5856 KB Output is correct
68 Correct 75 ms 5964 KB Output is correct
69 Correct 82 ms 5960 KB Output is correct
70 Correct 68 ms 5884 KB Output is correct
71 Correct 69 ms 5980 KB Output is correct
72 Correct 65 ms 6000 KB Output is correct
73 Correct 79 ms 6024 KB Output is correct
74 Correct 62 ms 6004 KB Output is correct
75 Correct 67 ms 6004 KB Output is correct
76 Correct 30 ms 5192 KB Output is correct
77 Correct 53 ms 5988 KB Output is correct
78 Correct 54 ms 5964 KB Output is correct
79 Correct 57 ms 5944 KB Output is correct
80 Correct 40 ms 5212 KB Output is correct
81 Correct 50 ms 5964 KB Output is correct
82 Correct 53 ms 5988 KB Output is correct
83 Correct 55 ms 5960 KB Output is correct
84 Correct 72 ms 5960 KB Output is correct
85 Correct 67 ms 6036 KB Output is correct
86 Correct 67 ms 5964 KB Output is correct
87 Correct 17 ms 4436 KB Output is correct
88 Correct 82 ms 6148 KB Output is correct