제출 #1037044

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1037044		pera	원숭이와 사과 나무 (IZhO12_apple)	C++17	0 / 100	0 ms	348 KiB

apple

#include<bits/stdc++.h>
using namespace std;
const int N = 1e9;
int Q;
struct node{
   node *left , *right;
   int sum = 0 , lz = -1;
   node(int x = 0) : sum(x) , lz(0) , left(NULL) , right(NULL){}
} *root;
void push(node *&u , int l , int r){
   if(u->lz == -1){
      return;
   }
   if(u->left == NULL){
      u->left = new node();
   }
   if(u->right == NULL){
      u->right = new node();
   }
   int m = (l + r) / 2;
   u->left->sum = (m - l + 1) * u->lz;
   u->right->sum = (r - m) * u->lz;
   u->left->lz = u->lz;
   u->right->lz = u->lz;
   u->lz = -1;
}
void upd(node *&u , int l , int r , int L , int R , int x){
   if(l > r || r < L || l > R){
      return;
   }
   if(u == NULL){
      u = new node();
   }
   if(L <= l && r <= R){
      u->sum = x * (r - l + 1);
      u->lz = x;
      return;
   }
   push(u , l , r);
   int m = (l + r) / 2;
   upd(u->left , l , m , L , R , x);
   upd(u->right , m + 1 , r , L , R , x);
   u->sum = 0;
   if(u->left){
      u->sum += u->left->sum;
   }
   if(u->right){
      u->sum += u->right->sum;
   }
}
int get(node *&u , int l , int r , int L , int R){
   if(l > r || r < L || l > R){
      return 0;
   }
   if(L <= l && r <= R){
      return u->sum;
   }
   push(u , l , r);
   int m = (l + r) / 2;
   return get(u->left , l , m , L , R) + get(u->right , m + 1 , r , L , R);
}
int main(){
   int C = 0;
   cin >> Q;
   while(Q--){
      int D , X , Y;
      cin >> D >> X >> Y;
      X += C;
      Y += C;
      if(D == 1){
         C = get(root , 1 , N , X , Y);
         cout << C << " ";
      }else{
         upd(root , 1 , N , X , Y , 1);
      }
   }
}

컴파일 시 표준 에러 (stderr) 메시지

apple.cpp: In constructor 'node::node(int)':
apple.cpp:7:18: warning: 'node::lz' will be initialized after [-Wreorder]
    7 |    int sum = 0 , lz = -1;
      |                  ^~
apple.cpp:6:10: warning:   'node* node::left' [-Wreorder]
    6 |    node *left , *right;
      |          ^~~~
apple.cpp:8:4: warning:   when initialized here [-Wreorder]
    8 |    node(int x = 0) : sum(x) , lz(0) , left(NULL) , right(NULL){}
      |    ^~~~

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