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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 |
---|---|---|---|---|---|---|---|---|---|
#611956 | #5143. Quick Sort | Hooch | WA | 48ms | 5724kb | C++23 | 3.1kb | 2024-10-05 00:38:31 | 2024-10-05 00:38:32 |
Judging History
answer
#include <bits/stdc++.h>
using u32 = unsigned;
using i64 = long long;
using u64 = unsigned long long;
constexpr int N = 5E5 + 5;
int n, a[N];
struct Data {
int min, max;
} ;
Data operator+(const Data &lhs, const Data &rhs) {
return (Data) {
std::min(lhs.min, rhs.min),
std::max(lhs.max, rhs.max)
} ;
}
struct SegmentTree {
Data t[N * 4];
void pull(int x) {
t[x] = t[x * 2] + t[x * 2 + 1];
}
void build(int x, int l, int r) {
if (l == r) return void(t[x] = {a[l], a[l]});
int mid = (l + r) / 2;
build(x * 2, l, mid);
build(x * 2 + 1, mid + 1, r);
pull(x);
}
void modify(int x, int l, int r, int pos, int val) {
if (l == r) return void(t[x] = {val, val});
int mid = (l + r) / 2;
if (pos <= mid) modify(x * 2, l, mid, pos, val);
else modify(x * 2 + 1, mid + 1, r, pos, val);
pull(x);
}
void modify(int pos, int val) {modify(1, 1, n, pos, val);}
int fft(int x, int l, int r, int lim) {
if (l == r) return l;
int mid = (l + r) / 2;
if (t[x * 2].max >= lim) return fft(x * 2, l, mid, lim);
return fft(x * 2 + 1, mid + 1, r, lim);
}
int flt(int x, int l, int r, int lim) {
if (l == r) return l;
int mid = (l + r) / 2;
if (t[x * 2 + 1].min <= lim) return flt(x * 2 + 1, mid + 1, r, lim);
return flt(x * 2, l, mid, lim);
}
int ff(int x, int l, int r, int L, int R, int lim) {
if (r < L || l > R) return -1;
if (l >= L && r <= R) {
if (t[x].max >= lim) return fft(x, l, r, lim);
else return -1;
}
int mid = (l + r) / 2, res = ff(x * 2, l, mid, L, R, lim);
if (~res) return res;
return ff(x * 2 + 1, mid + 1, r, L, R, lim);
}
int ff(int l, int r, int lim) {return ff(1, 1, n, l, r, lim);}
int fl(int x, int l, int r, int L, int R, int lim) {
if (r < L || l > R) return -1;
if (l >= L && r <= R) {
if (t[x].min <= lim) return flt(x, l, r, lim);
else return -1;
}
int mid = (l + r) / 2, res = fl(x * 2 + 1, mid + 1, r, L, R, lim);
if (~res) return res;
return fl(x * 2, l, mid, L, R, lim);
}
int fl(int l, int r, int lim) {return fl(1, 1, n, l, r, lim);}
} seg;
int ans;
void solve(int l, int r) {
if (l >= r) return ;
int val = a[(l + r) / 2];
while (true) {
int lp = seg.ff(l, r, val);
int rp = seg.fl(l, r, val);
if (lp >= rp) {
solve(l, rp);
solve(rp + 1, r);
break;
}
std::swap(a[lp], a[rp]);
++ans;
seg.modify(lp, a[lp]);
seg.modify(rp, a[rp]);
}
}
void solve() {
std::cin >> n;
for (int i = 1; i <= n; ++i) std::cin >> a[i];
ans = 0;
seg.build(1, 1, n);
solve(1, n);
std::cout << ans << "\n";
}
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int t;
std::cin >> t;
while (t--) solve();
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 5620kb
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: 33ms
memory: 5724kb
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: 48ms
memory: 5708kb
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'