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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#164621 | #7108. Couleur | ucup-team203 | RE | 0ms | 0kb | C++17 | 2.9kb | 2023-09-05 11:16:47 | 2023-09-05 11:16:47 |
answer
#include <bits/stdc++.h>
using i64 = long long;
using namespace std;
const int N = 100005;
int n, a[N], root[N], tot;
struct node
{
int val, l, r;
} st[N << 5];
#define lc st[cur].l
#define rc st[cur].r
void insert(int &cur, int pre, int l, int r, int p)
{
cur = ++tot;
if (l == r)
{
st[cur].val = st[pre].val + 1;
return;
}
int mid = l + r >> 1;
if (p <= mid)
insert(lc, st[pre].l, l, mid, p), rc = st[pre].r;
else
insert(rc, st[pre].r, mid + 1, r, p), lc = st[pre].l;
st[cur].val = st[lc].val + st[rc].val;
}
int query(int cur, int pre, int l, int r, int a, int b)
{
if (a > r || b < l || a > b || !cur)
return 0;
if (a <= l && r <= b)
return st[cur].val - st[pre].val;
int mid = l + r >> 1;
return query(lc, st[pre].l, l, mid, a, b) + query(rc, st[pre].r, mid + 1, r, a, b);
}
void solve()
{
cin >> n;
for (int i = 1; i <= n; i++)
cin >> a[i], insert(root[i], root[i - 1], 1, n, a[i]);
map<pair<int, int>, i64> val;
multiset<i64> mx;
i64 ans = 0, x;
for (int i = 2; i <= n; i++)
ans += query(root[i], root[0], 1, n, a[i] + 1, n);
val[{1, n}] = ans;
mx.insert(ans);
cout << ans;
for (int i = 1; i <= n; i++)
{
cin >> x;
x ^= ans;
if (i == n)
break;
auto [t, sum] = *(--val.upper_bound({x, 0}));
mx.erase(mx.find(sum));
auto [l, r] = t;
val.erase({l, r});
sum -= query(root[x - 1], root[l - 1], 1, n, a[x] + 1, n) + query(root[r], root[x], 1, n, 1, a[x] - 1);
if (x - l < r - x)
{
i64 sum1 = 0;
for (int j = l; j < x; j++)
{
sum -= query(root[r], root[x], 1, n, 1, a[j] - 1);
sum1 += query(root[j], root[l - 1], 1, n, a[j] + 1, n);
}
if (l < x)
val[{l, x - 1}] = sum1, mx.insert(sum1);
if (r > x)
val[{x + 1, r}] = sum - sum1, mx.insert(sum - sum1);
}
else
{
i64 sum1 = 0;
for (int j = x + 1; j <= r; j++)
{
sum -= query(root[x - 1], root[l - 1], 1, n, a[j] + 1, n);
sum1 += query(root[j], root[x], 1, n, a[j] + 1, n);
}
if (l < x)
val[{l, x - 1}] = sum - sum1, mx.insert(sum - sum1);
if (r > x)
val[{x + 1, r}] = sum1, mx.insert(sum1);
}
ans = *mx.rbegin();
cout << ' ' << ans;
}
cout << '\n';
for (int i = 1; i <= tot; i++)
st[i] = {0, 0, 0};
tot = 0;
fill(root + 1, root + n + 1, 0);
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int t = 1;
cin >> t;
while (t--)
solve();
}
Details
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Test #1:
score: 0
Dangerous Syscalls
input:
3 5 4 3 1 1 1 5 4 5 3 1 10 9 7 1 4 7 8 5 7 4 8 21 8 15 5 9 2 4 5 10 6 15 4 8 8 1 12 1 10 14 7 14 2 9 13 10 3 37 19 23 15 7 2 10 15 2 13 4 5 8 7 10