cp/codeforces/891/e.cc
2025-03-07 12:52:53 -05:00

155 lines
3 KiB
C++

#include <bits/stdc++.h> // {{{
// https://codeforces.com/blog/entry/96344
#pragma GCC optimize("O2,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using namespace std;
template <typename T>
[[nodiscard]] static T MIN() {
return std::numeric_limits<T>::min();
}
template <typename T>
[[nodiscard]] static T MAX() {
return std::numeric_limits<T>::max();
}
template <typename T>
[[nodiscard]] static T sc(auto&& x) {
return static_cast<T>(x);
}
template <typename T>
[[nodiscard]] static T sz(auto&& x) {
return static_cast<T>(x.size());
}
#define prln(...) std::println(__VA_ARGS__)
#define pr(...) std::print(__VA_ARGS__)
#ifdef LOCAL
#define dbgln(...) std::println(__VA_ARGS__)
#define dbg(...) std::print(__VA_ARGS__)
#endif
inline static void NO() {
prln("NO");
}
inline static void YES() {
prln("YES");
}
using ll = long long;
using ld = long double;
template <typename T>
using ve = std::vector<T>;
template <typename T, size_t N>
using ar = std::array<T, N>;
template <typename T1, typename T2>
using pa = std::pair<T1, T2>;
template <typename... Ts>
using tu = std::tuple<Ts...>;
template <typename... Ts>
using dq = std::deque<Ts...>;
template <typename... Ts>
using qu = std::queue<Ts...>;
template <typename... Ts>
using pq = std::priority_queue<Ts...>;
template <typename... Ts>
using st = std::stack<Ts...>;
#define ff first
#define ss second
#define eb emplace_back
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
// }}}
void solve() {
int n;
cin >> n;
ve<pa<ll, int>> a(n);
for (int i = 0; i < n; ++i) {
cin >> a[i].ff;
a[i].ss = i;
}
sort(all(a));
ve<ll> prefix(n + 1, 0), postfix(n + 2, 0);
for (int i = 0; i < n; ++i) {
prefix[i + 1] = prefix[i] + a[i].ff;
}
for (int i = n - 1; i >= 0; --i) {
postfix[i + 1] = postfix[i + 2] + a[i].ff;
}
ve<ll> ans(n);
for (int i = 0; i < n; ++i) {
ll x = n + a[i].ff * (i + 1) - prefix[i + 1];
x += postfix[i + 2] - a[i].ff * (n - i - 1);
ans[a[i].ss] = x;
}
for (auto& e : ans)
pr("{} ", e);
prln();
/*
1 3 4
3 + 0 +
to query @ i, want to get info related to
a[i] - a[0], a[i] - a[1], ....
prefix differences + postfix differences for each index
n + a[i] - a[0] + a[i] - a[1] + ... + a[i] - a[i] + a[j] - a[i] + a[j + 1]
- a[i]
= n + a[i] * (i + 1) - prefix[i] (inclusive) + postfix[i] (exclusive) -
a[i] * ``
n * a[i] - sum of prefix before i + sum of postfix after i
sum a[i] - a[j] + 1 for j in range(i + 1)
count how manny points before us? * a[i]
remove prefix sum up to j
- and postfix! <- note this
*-**
-
---
----
---
-
--
----
--
-
really, we're just adding the inclusive distance between ALL pairs
*/
}
int main() { // {{{
cin.tie(nullptr)->sync_with_stdio(false);
cin.exceptions(cin.failbit);
int t = 1;
cin >> t;
while (t--) {
solve();
}
return 0;
}
// }}}