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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#168471 | #6434. Paimon Sorting | zlxFTH | AC ✓ | 179ms | 14056kb | C++14 | 1.5kb | 2023-09-08 15:29:58 | 2023-09-08 15:29:58 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
struct BIT {
int n;
vector<int> a;
BIT(int n = 0) : n(n), a(n + 1, 0) {}
void mdf(int x, int v) {
for (int i = x + 1; i <= n; i += i & -i) {
a[i] += v;
}
}
int qry(int x) {
if (x < 0 || x >= n) return 0;
int res = 0;
for (int i = x + 1; i; i -= i & -i) {
res += a[i];
}
return res;
}
int sum(int l, int r) {
int res = qry(r);
res -= qry(l - 1);
return res;
}
};
using i64 = long long;
void solve() {
int n;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++) {
cin >> a[i];
a[i]--;
}
i64 ans = 0;
cout << 0 << " \n"[0 == n - 1];
BIT t(n);
vector<int> vis(n);
auto cg = [&](int x) {
if (!vis[x]) {
t.mdf(x, 1);
}
vis[x]++;
};
cg(a[0]);
vector<set<int>> b(n);
b[a[0]].insert(0);
for (int i = 1; i < n; i++) {
int v = a[i];
if (a[0] >= a[i]) {
ans += t.sum(a[i] + 1, n - 1);
b[a[i]].insert(i);
} else {
ans++;
ans += b[a[0]].size();
if (b[a[0]].size() > 1) {
int u = *next(b[a[0]].begin());
ans += (i - u - 1) - (b[a[0]].size() - 2);
}
b[a[0]].erase(0);
b[a[0]].insert(i);
b[a[i]].insert(0);
swap(a[0], a[i]);
}
cg(v);
cout << ans << " \n"[i == n - 1];
}
}
int main() {
cin.tie(0)->sync_with_stdio(0);
int t;
cin >> t;
while (t--) {
solve();
}
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 3408kb
input:
3 5 2 3 2 1 5 3 1 2 3 1 1
output:
0 2 3 5 7 0 2 4 0
result:
ok 3 lines
Test #2:
score: 0
Accepted
time: 179ms
memory: 14056kb
input:
6107 19 10 13 8 8 11 18 12 9 15 19 6 13 11 11 17 9 14 2 18 12 1 8 10 2 10 2 6 1 5 9 5 7 16 14 4 2 15 12 14 10 3 2 9 15 4 12 9 5 15 10 3 2 5 6 7 8 6 1 6 4 18 6 5 12 12 11 2 10 10 5 10 13 15 13 10 17 7 11 2 1 1 2 1 1 3 2 1 2 17 11 15 3 10 7 15 15 10 5 17 3 3 14 13 11 11 2 3 2 2 3 7 6 1 7 5 3 5 1 7 2 1...
output:
0 2 4 6 7 9 11 16 17 19 28 31 36 41 43 51 55 67 68 0 2 4 6 6 8 10 14 17 18 22 25 0 1 3 5 7 8 11 16 22 26 26 31 33 37 42 42 0 1 3 5 7 9 11 17 19 23 0 1 3 3 4 8 10 12 16 18 27 29 30 34 36 42 46 55 0 0 0 0 1 1 0 2 4 6 9 9 9 11 15 21 27 33 35 38 42 46 55 0 0 3 0 1 3 5 8 10 14 0 1 3 4 6 9 9 0 1 1 3 7 11 ...
result:
ok 6107 lines