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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#679191#5143. Quick Sortlmx111WA 55ms3648kbC++202.9kb2024-10-26 17:05:172024-10-26 17:05:18

Judging History

你现在查看的是最新测评结果

  • [2024-10-26 17:05:18]
  • 评测
  • 测评结果:WA
  • 用时:55ms
  • 内存:3648kb
  • [2024-10-26 17:05:17]
  • 提交

answer

// Coded by hjxddl
#include <bits/stdc++.h>
#define ll  long long
#define db  double
#define mid (l + r >> 1)
const int N = 2e5 + 5;
int n;
ll ans;
std::vector<int> a, min, max;
void build(int x = 1, int l = 1, int r = n) {
    if (l == r) {
        min[x] = max[x] = a[l];
        return;
    }
    build(x << 1, l, mid);
    build(x << 1 | 1, mid + 1, r);
    min[x] = std::min(min[x << 1], min[x << 1 | 1]);
    max[x] = std::max(max[x << 1], max[x << 1 | 1]);
}
int query(int opt, int k, int l1, int r1, int x = 1, int l = 1, int r = n) {
    if (l == r)
        return l;
    if (opt == 0) {
        int ans = n + 5;
        if (max[x << 1] >= k) {
            if (l1 <= mid)
                ans = std::min(ans, query(opt, k, l1, r1, x << 1, l, mid));
            if (ans == n + 5 && max[x << 1 | 1] >= k)
                return query(opt, k, l1, r1, x << 1 | 1, mid + 1, r);
            return ans;
        } else {
            if (max[x << 1 | 1] >= k)
                return query(opt, k, l1, r1, x << 1 | 1, mid + 1, r);
            return ans;
        }
    }
    if (opt == 1) {
        int ans = 0;
        if (min[x << 1 | 1] <= k) {
            if (r1 > mid)
                ans = std::max(ans, query(opt, k, l1, r1, x << 1 | 1, mid + 1, r));
            if (ans == 0 && min[x << 1] <= k)
                return query(opt, k, l1, r1, x << 1, l, mid);
            return ans;
        } else {
            if (min[x << 1] <= k)
                return query(opt, k, l1, r1, x << 1, l, mid);
            return ans;
        }
    }
}
void change(int k, int pos, int x = 1, int l = 1, int r = n) {
    if (l == r) {
        min[x] = max[x] = k;
        return;
    }
    if (pos <= mid)
        change(k, pos, x << 1, l, mid);
    else
        change(k, pos, x << 1 | 1, mid + 1, r);
    min[x] = std::min(min[x << 1], min[x << 1 | 1]);
    max[x] = std::max(max[x << 1], max[x << 1 | 1]);
}
int partition(int l, int r) {
    int p = a[mid];
    while (1) {
        int i = query(0, p, l, n);
        int j = query(1, p, 1, r);
        if (i >= j) return j;
        int x = a[i], y = a[j];
        std::swap(a[i], a[j]);
        change(x, j);
        change(y, i);
        ans++;
    }
}
void quicksort(int l, int r) {
    if (l >= 0 && r >= 0 && l < r) {
        int p = partition(l, r);
        quicksort(l, p);
        quicksort(p + 1, r);
    }
}
void solve() {
    std::cin >> n;
    ans = 0;
    a.clear();
    a.resize(n + 5);
    min.clear(), max.clear();
    min.resize((n + 5) << 2), max.resize((n + 5) << 2);
    for (int i = 1; i <= n; i++)
        std::cin >> a[i];
    build();
    quicksort(1, n);
    std::cout << ans << '\n';
}
int main() {
    std::ios::sync_with_stdio(0);
    std::cin.tie(0), std::cout.tie(0);
    int t = 1;
    std::cin >> t;
    while (t--) {
        solve();
    }
    std::cout << std::flush;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3640kb

input:

3
3
3 2 1
5
2 4 5 3 1
10
7 2 4 6 1 9 10 8 5 3

output:

1
4
7

result:

ok 3 number(s): "1 4 7"

Test #2:

score: 0
Accepted
time: 38ms
memory: 3648kb

input:

100000
4
3 4 2 1
5
5 4 1 3 2
4
3 1 4 2
4
4 2 1 3
4
1 3 2 4
4
4 2 3 1
4
3 2 1 4
5
1 2 3 4 5
5
5 2 3 1 4
5
1 3 5 4 2
5
4 3 2 1 5
5
3 4 2 1 5
5
5 4 3 2 1
4
3 4 2 1
5
4 2 5 1 3
5
4 1 5 2 3
4
3 4 1 2
4
2 1 3 4
5
4 3 2 5 1
4
4 2 1 3
5
3 1 5 2 4
4
4 1 2 3
5
1 5 2 4 3
5
4 1 3 5 2
5
4 2 3 5 1
5
1 2 3 4 5
5
4...

output:

3
4
3
2
1
1
1
0
2
2
2
3
2
3
2
3
2
1
3
2
4
3
2
3
2
0
4
2
4
1
3
2
3
2
2
1
3
1
1
2
4
3
2
3
1
1
1
3
3
3
4
4
2
3
3
2
3
3
3
2
1
1
2
3
1
3
1
1
3
4
2
2
4
1
1
3
2
2
2
2
1
3
4
4
3
4
2
2
1
3
2
3
2
3
3
2
1
4
2
3
4
1
2
2
3
2
2
3
2
2
2
2
4
1
2
3
2
2
2
2
3
2
3
4
3
2
3
4
2
4
1
3
2
3
4
3
3
4
1
2
4
3
2
4
2
3
3
1
2
2
...

result:

ok 100000 numbers

Test #3:

score: -100
Wrong Answer
time: 55ms
memory: 3552kb

input:

50000
10
3 1 2 10 6 8 5 4 7 9
10
8 3 9 2 10 4 5 1 7 6
9
6 8 4 9 5 7 1 3 2
9
6 7 9 3 8 5 2 1 4
10
7 10 1 2 6 5 3 9 4 8
10
1 10 4 3 2 9 7 8 5 6
9
1 5 3 4 9 6 7 2 8
10
4 7 2 8 3 6 9 5 10 1
9
6 4 9 1 8 5 2 3 7
10
5 1 7 8 10 3 9 6 2 4
9
4 8 6 3 9 7 5 2 1
9
9 1 7 6 2 3 8 5 4
10
5 7 2 1 4 3 6 8 9 10
10
9 7...

output:

8
8
8
8
9
5
3
8
8
9
7
8
7
9
8
11
6
8
8
7
7
11
7
6
11
8
3
6
8
6
6
7
10
4
8
6
6
8
5
6
7
6
7
5
5
8
9
5
9
10
6
7
8
9
4
9
6
7
8
8
9
7
5
7
6
6
10
9
8
6
4
8
6
10
4
9
9
6
9
6
7
7
7
9
6
6
9
8
7
9
9
5
6
8
8
8
8
8
6
4
8
8
5
8
8
8
9
8
8
7
8
7
6
10
9
5
7
7
6
5
5
6
8
9
5
6
7
8
6
7
9
6
7
9
7
7
6
8
9
9
7
7
9
7
8
6
...

result:

wrong answer 11th numbers differ - expected: '9', found: '7'