Submission #206068

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
206068	2020-03-02 06:29:58	super_j6	Werewolf (IOI18_werewolf)	C++14	100 / 100	1122 ms	118780 KiB

werewolf

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#include "werewolf.h"
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
using namespace std;
#define endl '\n'
#define pi pair<int, int>
#define vi vector<int>
const int inf = 1000000007;
struct segTree{
  int l, r;
  segTree *left, *right;
  int val = inf;
  
  segTree(int a, int b){
    l = a;
    r = b;
    
    if(l != r){
      int mid = (l + r) / 2;
      left = new segTree(l, mid);
      right = new segTree(mid + 1, r);
    }
  }
  
  void add(int x, int v){
    if(x < l || r < x) return;
 
 
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Compilation message (stderr)

werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:45:31: warning: 'tre.segTree::left' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return min(left->qry(a, b), right->qry(a, b));
                               ^~~~~
werewolf.cpp:108:10: note: 'tre.segTree::left' was declared here
  segTree tre(0, n - 1);
          ^~~
werewolf.cpp:42:15: warning: 'tre.segTree::right' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(b < l || r < a) return inf;
               ^
werewolf.cpp:108:10: note: 'tre.segTree::right' was declared here
  segTree tre(0, n - 1);
          ^~~

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