Submission #102848

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
102848	2019-03-28 01:02:35	wxh010910	Werewolf (IOI18_werewolf)	C++17	100 / 100	1883 ms	126920 KiB

werewolf

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#include <bits/stdc++.h>
#include "werewolf.h"
using namespace std;
template<typename T> class fenwick_t {
 public:
  vector<T> fenw;
  int n;
  fenwick_t(int n):n(n) {
    fenw.resize(n);
  }
  void modify(int x, T value) {
    while (x < n) {
      fenw[x] += value;
      x |= x + 1;
    }
  }
  T query(int x) {
    T result{};
    while (x >= 0) {
      result += fenw[x];
      x = (x & x + 1) - 1;
    }
    return result;
  }
};
 
 
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Compilation message (stderr)

werewolf.cpp: In member function 'void check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)::tree_t::init()':
werewolf.cpp:102:13: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
       dfs(n - 1 << 1);
           ~~^~~
werewolf.cpp: In instantiation of 'T fenwick_t<T>::query(int) [with T = int]':
werewolf.cpp:155:64:   required from here
werewolf.cpp:26:18: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
       x = (x & x + 1) - 1;
                ~~^~~

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 34 / 34
• Subtask 4: 51 / 51