結果
問題 | No.972 選び方のスコア |
ユーザー | kcvlex |
提出日時 | 2020-01-17 22:01:11 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 94 ms / 2,000 ms |
コード長 | 3,765 bytes |
コンパイル時間 | 1,655 ms |
コンパイル使用メモリ | 173,732 KB |
実行使用メモリ | 7,040 KB |
最終ジャッジ日時 | 2024-06-25 20:04:44 |
合計ジャッジ時間 | 5,197 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 92 ms
6,912 KB |
testcase_01 | AC | 94 ms
6,784 KB |
testcase_02 | AC | 88 ms
6,912 KB |
testcase_03 | AC | 44 ms
5,376 KB |
testcase_04 | AC | 92 ms
6,944 KB |
testcase_05 | AC | 91 ms
6,784 KB |
testcase_06 | AC | 90 ms
6,912 KB |
testcase_07 | AC | 69 ms
6,528 KB |
testcase_08 | AC | 78 ms
6,912 KB |
testcase_09 | AC | 76 ms
6,912 KB |
testcase_10 | AC | 74 ms
6,912 KB |
testcase_11 | AC | 76 ms
6,912 KB |
testcase_12 | AC | 77 ms
6,912 KB |
testcase_13 | AC | 76 ms
6,912 KB |
testcase_14 | AC | 78 ms
6,912 KB |
testcase_15 | AC | 81 ms
6,784 KB |
testcase_16 | AC | 80 ms
7,040 KB |
testcase_17 | AC | 78 ms
6,912 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 90 ms
6,940 KB |
testcase_20 | AC | 90 ms
6,944 KB |
testcase_21 | AC | 89 ms
6,912 KB |
testcase_22 | AC | 88 ms
6,784 KB |
testcase_23 | AC | 90 ms
6,912 KB |
testcase_24 | AC | 90 ms
6,784 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 1 ms
5,376 KB |
testcase_30 | AC | 1 ms
5,376 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
ソースコード
// #define DEBUGGING #include <bits/stdc++.h> #define endl '\n' #define ALL(V) (V).begin(), (V).end() #define ALLR(V) (V).rbegin(), (V).rend() using ll = std::int64_t; using ull = std::uint64_t; using PLL = std::pair<ll, ll>; using TLL = std::tuple<ll, ll, ll>; template <typename T> using V = std::vector<T>; template <typename T> using VV = V<V<T>>; template <typename T> const T& var_min(const T &t) { return t; } template <typename T> const T& var_max(const T &t) { return t; } template <typename T, typename... Tail> const T& var_min(const T &t, const Tail&... tail) { return std::min(t, var_min(tail...)); } template <typename T, typename... Tail> const T& var_max(const T &t, const Tail&... tail) { return std::max(t, var_max(tail...)); } template <typename T, typename... Tail> void chmin(T &t, const Tail&... tail) { t = var_min(t, tail...); } template <typename T, typename... Tail> void chmax(T &t, const Tail&... tail) { t = var_max(t, tail...); } template <typename T> const T& clamp(const T &t, const T &low, const T &high) { return std::max(low, std::min(high, t)); } template <typename T> void chclamp(T &t, const T &low, const T &high) { return t = clamp(t, low, high); } namespace init__ { struct InitIO { InitIO() { std::cin.tie(nullptr); std::ios_base::sync_with_stdio(false); std::cout << std::fixed << std::setprecision(30); } } init_io; } #define mv_rec make_v(init, tail...) template <typename T> T make_v(T init) { return init; } template <typename T, typename... Tail> auto make_v(T init, size_t s, Tail... tail) { return V<decltype(mv_rec)>(s, mv_rec); } #undef mv_rec using namespace std; #ifdef DEBUGGING #include "../../debug/debug.cpp" #else #define DEBUG(...) 0 #define DEBUG_SEPARATOR_LINE 0 #endif const ll inf = 5e15; // 0-indexed // [l, r) template <typename T> struct Bit { V<T> data; T id_ele; Bit(ll size, T id_ele) : id_ele(id_ele) { ll bsize = 1; while(bsize < size) bsize *= 2; data = V<T>(bsize + 1, id_ele); } T sum(ll pos) { T ret = id_ele; for(; 0 < pos; pos -= pos & -pos) ret += data[pos]; return ret; } T sum(ll l, ll r) { if (r <= l) return 0; return sum(r) - sum(l); } void add(ll pos, T delta) { for(++pos; pos < data.size(); pos += pos & -pos) data[pos] += delta; } }; int main() { ll N; cin >> N; V<ll> A(N); for (ll &e : A) cin >> e; sort(ALL(A)); Bit<ll> bit(N + 10, 0); for (ll i = 0; i < N; i++) bit.add(i, A[i]); ll ans = -inf; for (ll i = 0; i < N; i++) { ll m = A[i]; ll lrest = i; ll rrest = (N - 1) - i; ll ok = 0, ng = min(lrest, rrest) + 1; while (abs(ok - ng) > 1) { ll mid = (ok + ng) / 2; ll l = A[i - mid]; ll r = A[N - mid]; ll inc = r - m, dec = m - l; (dec <= inc ? ok : ng) = mid; } ll tmp = m; tmp += bit.sum(i - ok, i); tmp += bit.sum(N - ok, N); tmp -= m * (2 * ok + 1); DEBUG(make_tuple(i, tmp, ok)); chmax(ans, tmp); } for (ll i = 0; i < N - 1; i++) { ll m1 = A[i], m2 = A[i + 1]; ll lrest = i, rrest = (N - 1) - (i + 1); ll ok = 0, ng = min(lrest, rrest) + 1; while (abs(ok - ng) > 1) { ll mid = (ok + ng) / 2; ll l = A[i - mid]; ll r = A[N - mid]; ll inc = 2 * r - (m1 + m2), dec = (m1 + m2) - 2 * l; (dec <= inc ? ok : ng) = mid; } ll tmp = m1 + m2; tmp += bit.sum(i - ok, i); tmp += bit.sum(N - ok, ok); tmp -= (m1 + m2) * (ok + 1); DEBUG(tmp); chmax(ans, tmp); } cout << ans << endl; return 0; }