結果
問題 | No.59 鉄道の旅 |
ユーザー | snrnsidy |
提出日時 | 2021-08-07 15:17:05 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 16 ms / 5,000 ms |
コード長 | 4,605 bytes |
コンパイル時間 | 1,830 ms |
コンパイル使用メモリ | 203,464 KB |
実行使用メモリ | 7,652 KB |
最終ジャッジ日時 | 2024-09-18 19:11:56 |
合計ジャッジ時間 | 2,927 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | 4 ms
7,040 KB |
testcase_01 | AC | 3 ms
7,168 KB |
testcase_02 | AC | 3 ms
7,168 KB |
testcase_03 | AC | 3 ms
7,168 KB |
testcase_04 | AC | 16 ms
7,580 KB |
testcase_05 | AC | 3 ms
7,040 KB |
testcase_06 | AC | 3 ms
7,168 KB |
testcase_07 | AC | 3 ms
7,168 KB |
testcase_08 | AC | 5 ms
7,220 KB |
testcase_09 | AC | 5 ms
7,128 KB |
testcase_10 | AC | 5 ms
7,260 KB |
testcase_11 | AC | 4 ms
7,168 KB |
testcase_12 | AC | 9 ms
7,556 KB |
testcase_13 | AC | 15 ms
7,524 KB |
testcase_14 | AC | 15 ms
7,652 KB |
testcase_15 | AC | 3 ms
7,040 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; namespace atcoder { namespace internal { #ifndef _MSC_VER template <class T> using is_signed_int128 = typename std::conditional<std::is_same<T, __int128_t>::value || std::is_same<T, __int128>::value, std::true_type, std::false_type>::type; template <class T> using is_unsigned_int128 = typename std::conditional<std::is_same<T, __uint128_t>::value || std::is_same<T, unsigned __int128>::value, std::true_type, std::false_type>::type; template <class T> using make_unsigned_int128 = typename std::conditional<std::is_same<T, __int128_t>::value, __uint128_t, unsigned __int128>; template <class T> using is_integral = typename std::conditional<std::is_integral<T>::value || is_signed_int128<T>::value || is_unsigned_int128<T>::value, std::true_type, std::false_type>::type; template <class T> using is_signed_int = typename std::conditional<(is_integral<T>::value&& std::is_signed<T>::value) || is_signed_int128<T>::value, std::true_type, std::false_type>::type; template <class T> using is_unsigned_int = typename std::conditional<(is_integral<T>::value&& std::is_unsigned<T>::value) || is_unsigned_int128<T>::value, std::true_type, std::false_type>::type; template <class T> using to_unsigned = typename std::conditional< is_signed_int128<T>::value, make_unsigned_int128<T>, typename std::conditional<std::is_signed<T>::value, std::make_unsigned<T>, std::common_type<T>>::type>::type; #else template <class T> using is_integral = typename std::is_integral<T>; template <class T> using is_signed_int = typename std::conditional<is_integral<T>::value&& std::is_signed<T>::value, std::true_type, std::false_type>::type; template <class T> using is_unsigned_int = typename std::conditional<is_integral<T>::value&& std::is_unsigned<T>::value, std::true_type, std::false_type>::type; template <class T> using to_unsigned = typename std::conditional<is_signed_int<T>::value, std::make_unsigned<T>, std::common_type<T>>::type; #endif template <class T> using is_signed_int_t = std::enable_if_t<is_signed_int<T>::value>; template <class T> using is_unsigned_int_t = std::enable_if_t<is_unsigned_int<T>::value>; template <class T> using to_unsigned_t = typename to_unsigned<T>::type; } // namespace internal } // namespace atcoder namespace atcoder { // Reference: https://en.wikipedia.org/wiki/Fenwick_tree template <class T> struct fenwick_tree { using U = internal::to_unsigned_t<T>; public: fenwick_tree() : _n(0) {} explicit fenwick_tree(int n) : _n(n), data(n) {} void add(int p, T x) { assert(0 <= p && p < _n); p++; while (p <= _n) { data[p - 1] += U(x); p += p & -p; } } T sum(int l, int r) { assert(0 <= l && l <= r && r <= _n); return sum(r) - sum(l); } private: int _n; std::vector<U> data; U sum(int r) { U s = 0; while (r > 0) { s += data[r - 1]; r -= r & -r; } return s; } }; } // namespace atcoder using namespace atcoder; int main(void) { cin.tie(0); ios::sync_with_stdio(false); int n, k, t; vector <int> v; cin >> n >> k; for (int i = 0; i < n; i++) { cin >> t; v.push_back(t); } fenwick_tree<int> tree(1000001); for (int i = 0; i < n; i++) { if (v[i] < 0) { int val = tree.sum(abs(v[i]), abs(v[i]) + 1); if (val > 0) { tree.add(abs(v[i]), -1); } } else { int val = tree.sum(abs(v[i]), 1000001); if (val < k) { tree.add(abs(v[i]), 1); } } } cout << tree.sum(0, 1000001) << '\n'; return 0; }