Submission #757784

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
757784	2023-06-13 18:27:34	taher	Toll (BOI17_toll)	C++17	100 / 100	222 ms	49640 KiB

toll

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#include <bits/stdc++.h>
using namespace std;
template<typename T, class F = function<T(const T&, const T&)>>
class SparseTable {
  public:
  int n;
  vector<vector<T>> mat;
  F func;
  SparseTable(const vector<int>& a, const F& f) : func(f) {
    n = (int) a.size();
    mat.resize(n);
    int max_log = 32 - __builtin_clz(n);
    mat[0] = a;
    for (int j = 1; j < max_log; j++) {
      mat[j].resize(n - (1 << j) + 1);
      for (int i = 0; i <= (n - (1 << j)); i++) {
        mat[j][i] = func(mat[j - 1][i], mat[j - 1][i + (1 << (j - 1))]);
      }
    }
  }
  T get(int from, int to) {
    assert(from <= to && from >= 0 && to <= n - 1);
    int lg = 32 - __builtin_clz(to - from + 1) - 1;
    return func(mat[lg][from], mat[lg][to - (1 << lg) + 1]);
  }
};
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 8 / 8
• Subtask 4: 31 / 31
• Subtask 5: 44 / 44