제출 #888574

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
888574	2023-12-17 20:28:18	White	원숭이와 사과 나무 (IZhO12_apple)	C++14	100 / 100	145 ms	83864 KiB

apple

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#pragma GCC optimize ("O3")
#include <bits/stdc++.h>
#define endl "\n"
using namespace std;
bitset<4000000000>onlyOne,hasOne;
void update_tree(int l,int r,int L,int R,int now){
    //cout<<now<<" "<<l<<" "<<r<<endl;
    if(l>R || r<L || onlyOne[now]==1)return ;
    if(l>=L && r<=R){
        onlyOne[now]=1;
        hasOne[now]=1;
        return;
    }
    int mid=(l+r)/2;
    update_tree(l,mid,L,R,now*2+1);
    update_tree(mid+1,r,L,R,now*2+2);
    if(onlyOne[now*2+1]==1 && onlyOne[now*2+2]==1)onlyOne[now]=1;
    if(hasOne[now*2+1]==1 || hasOne[now*2+2]==1 || onlyOne[now*2+2]==1 || onlyOne[now*2+1]==1)hasOne[now]=1;
}
int ans_tree(int l,int r,int L,int R,int now){
    if(l>R || r<L || hasOne[now]==0)return 0;
    if(onlyOne[now]==1){
        //cout<<l<<" )_( "<<r<<endl;
        return (min(r,R)-max(l,L)+1);
    }
    int mid=(l+r)/2;
    return ans_tree(l,mid,L,R,now*2+1)+ans_tree(mid+1,r,L,R,now*2+2);
 
 
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• Subtask 1: 100 / 100