結果
| 問題 | 
                            No.670 log は定数
                             | 
                    
| コンテスト | |
| ユーザー | 
                             ei1333333
                         | 
                    
| 提出日時 | 2018-03-23 22:58:10 | 
| 言語 | C++17  (gcc 13.3.0 + boost 1.87.0)  | 
                    
| 結果 | 
                             
                                MLE
                                 
                             
                            
                         | 
                    
| 実行時間 | - | 
| コード長 | 2,286 bytes | 
| コンパイル時間 | 2,506 ms | 
| コンパイル使用メモリ | 203,480 KB | 
| 最終ジャッジ日時 | 2025-01-05 09:23:16 | 
| 
                            ジャッジサーバーID (参考情報)  | 
                        judge3 / judge1 | 
(要ログイン)
| ファイルパターン | 結果 | 
|---|---|
| other | MLE * 10 | 
コンパイルメッセージ
main.cpp:60:32: warning: ‘template<class _Arg, class _Result> struct std::unary_function’ is deprecated [-Wdeprecated-declarations]
   60 | struct get_key_t : public std::unary_function<val_t,key_type>
      |                                ^~~~~~~~~~~~~~
In file included from /usr/include/c++/13/string:49,
                 from /usr/include/c++/13/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:52,
                 from main.cpp:1:
/usr/include/c++/13/bits/stl_function.h:117:12: note: declared here
  117 |     struct unary_function
      |            ^~~~~~~~~~~~~~
            
            ソースコード
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
typedef int key_type;
template <int UNIT, int BITS, class RAI, class G>
void radix_sort(RAI a0, RAI aN, G get_key)
{
  typedef typename std::iterator_traits<RAI>::value_type val_t;
  typedef typename std::iterator_traits<RAI>::difference_type dif_t;
  typedef typename G::result_type key_type;
  static const int KEYS = 1 << UNIT;
  static const int MASK = KEYS - 1;
  const dif_t N = aN - a0;
  const RAI& a = a0;
  if (N < 2) return;
  std::vector<dif_t> h(KEYS);
  std::vector<val_t> b(N);
  const typename std::vector<val_t>::iterator b0 = b.begin();
  const typename std::vector<val_t>::iterator bN = b.end();
  for (int shift = 0; shift < BITS; shift += UNIT) {
    for (int k = 0; k < KEYS; k++) h[k] = 0;
    typename std::vector<val_t>::iterator bi = b0;
    bool done = true;
    for (RAI ai = a0; ai < aN; ++ai, ++bi) {
      const val_t& x = *ai;
      const key_type y = get_key(x) >> shift;
      if (y > 0) done = false;
      ++h[int(y & MASK)];
      *bi = x;
    }
    if (done) return;
    for (int k = 1; k < KEYS; k++) h[k] += h[k - 1];
    for (bi = bN; bi > b0;) { 
      const val_t& x = *(--bi);
      const int y = int((get_key(x) >> shift) & MASK);
      const dif_t j = --h[y];
      a[j] = x;
    }
  }
}
ull seed;
inline int next() {
    seed = seed ^ (seed << 13);
    seed = seed ^ (seed >> 7);
    seed = seed ^ (seed << 17);
    return (seed >> 33);
}
struct val_t
{
        key_type key;
        int data;
};
struct get_key_t : public std::unary_function<val_t,key_type>
{
        key_type operator()(const val_t& x) const { return x.key; }
};
int main() {
    int n, q;
    cin >> n >> q >> seed;
    for (int i = 0; i < 10000; i++) next();
    
    vector<int> a(n);
    for (int i = 0; i < n; i++) a[i] = next();
    sort(begin(a), end(a));
    a.push_back(INT_MAX);
    
    ll sm = 0;
    vector< val_t > rad(q);
    for (int i = 0; i < q; i++) {
      rad[i].key = next();
      rad[i].data = i;
    }
    radix_sort<8,32>(rad.begin(), rad.end(), get_key_t());
    int ptr = 0;
    
    for(int i = 0; i < q; i++) {
      auto& p = rad[i];
      while(a[ptr] < p.key) ++ptr;
      sm ^= ll(ptr) * p.data;
    }
    cout << sm << endl;
}
            
            
            
        
            
ei1333333