Submission #681734

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
681734	2023-01-14 00:53:06	NK_	Fortune Telling 2 (JOI14_fortune_telling2)	C++17	100 / 100	1006 ms	72380 KiB

fortune_telling2

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#include <bits/stdc++.h>
using namespace std;
#define nl '\n'
using ll = long long;
struct BIT {
  vector<int> data; int N;
  void init(int n) { N = n; data = vector<int>(N, 0); }
  void add(int p, int x) { for(++p;p<=N;p+=p&-p) data[p-1] += x; }
  int sum(int l, int r) { return sum(r+1) - sum(l); }
  int sum(int r) { int s = 0; for(;r;r-=r&-r) s += data[r-1]; return s; }
};
struct ST {
  int level(int x) { return 31 - __builtin_clz(x); }
  int comb(int a, int b) { return max(a, b); }
  vector<int> v; vector<vector<int>> jmp;
  void init(const vector<int> &_v) {
    v = _v; jmp = {v};
    for(int j = 1; (1<<j) <= size(v); j++) {
      jmp.push_back(vector<int>(size(v) - (1<<j) + 1));
      for(int i = 0; i < size(jmp[j]); i++) {
        jmp[j][i] = comb(jmp[j-1][i], jmp[j-1][i + (1<<(j-1))]);
      } 
    }
  }
 
 
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Compilation message (stderr)

fortune_telling2.cpp: In member function 'void ST::init(const std::vector<int>&)':
fortune_telling2.cpp:23:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |   for(int j = 1; (1<<j) <= size(v); j++) {
      |                  ~~~~~~~^~~~~~~~~~
fortune_telling2.cpp:25:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |    for(int i = 0; i < size(jmp[j]); i++) {
      |                   ~~^~~~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 31 / 31
• Subtask 3: 65 / 65