Submission #71642

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
71642	2018-08-25 09:35:24	istlemin	Divide and conquer (IZhO14_divide)	C++14	0 / 100	301 ms	50516 KiB

divide

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#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i = a; i<int(b);++i)
#define all(v) v.begin(),v.end()
#define sz(v) v.size()
#define trav(a,c) for(auto a: c)
typedef long long ll;
typedef vector<ll> vi;
typedef pair<ll,ll> pii;
vi allPos;
class Node {
public:
    ll data = -1e9;
  ll lazy = 0;
    ll dn,up;
    Node *left;
    Node *right;
  bool hasChildren = false;
    Node(ll dn,ll up):dn(dn),up(up){
    }
    void ensure(){
    if(dn+1==up) return;
 
 
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Compilation message (stderr)

divide.cpp: In function 'int main()':
divide.cpp:82:14: warning: 'st.Node::right' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return max(left->query(a,b),right->query(a,b));
              ^~~~
divide.cpp:149:10: note: 'st.Node::right' was declared here
     Node st(0,allPos.size());
          ^~
divide.cpp:82:14: warning: 'st.Node::left' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return max(left->query(a,b),right->query(a,b));
              ^~~~
divide.cpp:149:10: note: 'st.Node::left' was declared here
     Node st(0,allPos.size());
          ^~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 31
• Subtask 3: 0 / 52