結果
問題 | No.1391 ±1 Abs Sum |
ユーザー |
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提出日時 | 2021-02-12 22:07:06 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,765 bytes |
コンパイル時間 | 1,889 ms |
コンパイル使用メモリ | 196,064 KB |
最終ジャッジ日時 | 2025-01-18 18:37:41 |
ジャッジサーバーID (参考情報) |
judge2 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 WA * 1 |
other | AC * 30 WA * 4 |
ソースコード
#include<bits/stdc++.h>using namespace std;using int64 = long long;const int mod = 1e9 + 7;// const int mod = 998244353;const int64 infll = (1LL << 62) - 1;const int inf = (1 << 30) - 1;struct IoSetup {IoSetup() {cin.tie(nullptr);ios::sync_with_stdio(false);cout << fixed << setprecision(10);cerr << fixed << setprecision(10);}} iosetup;template< typename T1, typename T2 >ostream &operator<<(ostream &os, const pair< T1, T2 > &p) {os << p.first << " " << p.second;return os;}template< typename T1, typename T2 >istream &operator>>(istream &is, pair< T1, T2 > &p) {is >> p.first >> p.second;return is;}template< typename T >ostream &operator<<(ostream &os, const vector< T > &v) {for(int i = 0; i < (int) v.size(); i++) {os << v[i] << (i + 1 != v.size() ? " " : "");}return os;}template< typename T >istream &operator>>(istream &is, vector< T > &v) {for(T &in : v) is >> in;return is;}template< typename T1, typename T2 >inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }template< typename T1, typename T2 >inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }template< typename T = int64 >vector< T > make_v(size_t a) {return vector< T >(a);}template< typename T, typename... Ts >auto make_v(size_t a, Ts... ts) {return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...));}template< typename T, typename V >typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) {t = v;}template< typename T, typename V >typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) {for(auto &e : t) fill_v(e, v);}template< typename F >struct FixPoint : F {FixPoint(F &&f) : F(forward< F >(f)) {}template< typename... Args >decltype(auto) operator()(Args &&... args) const {return F::operator()(*this, forward< Args >(args)...);}};template< typename F >inline decltype(auto) MFP(F &&f) {return FixPoint< F >{forward< F >(f)};}int main() {int N, K;cin >> N >> K;chmax(K, 1);vector< int > A(N);cin >> A;int64 ret = infll;vector< int64 > S(N + 1);for(int i = 0; i < N; i++) {S[i + 1] = S[i] + A[i];}auto check = [&](int i, int p) {int64 sum = 0;sum -= 1LL * A[p] * i - S[i];sum -= (S[N] - S[i + K]) - 1LL * A[p] * (N - (i + K));sum += 1LL * A[p] * (p + 1 - i) - (S[p + 1] - S[i]);sum += (S[i + K] - S[p]) - 1LL * A[p] * (i + K - p);chmin(ret, sum);return sum;};int ptr = 0;for(int i = 0; i <= N - K; i++) {int ok = i, ng = i + K;chmax(ptr, ok);while(ptr + 1 < ng and check(i, ptr) >= check(i, ptr + 1)) {++ptr;}}cout << ret << "\n";}