제출 #793117

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
793117		JakobZorz	The Potion of Great Power (CEOI20_potion)	C++14	70 / 100	3045 ms	212332 KiB

potion

#include<iostream>
#include<vector>
#include<unordered_set>
#include<unordered_map>
using namespace std;
typedef long long ll;
const int TREE_SIZE=1<<30;
const int NUM_NODES=1e8;

vector<int>elements;

int val[NUM_NODES];
int ch1[NUM_NODES];
int ch2[NUM_NODES];
int curr_node=1;

void collect_fn(int node,int l,int r){
    if(l==r-1){
        if(val[node]!=0)
            elements.push_back(l);
        return;
    }
    int m=(l+r)/2;
    if(ch1[node]!=0)
        collect_fn(ch1[node],l,m);
    if(ch2[node]!=0)
        collect_fn(ch2[node],m,r);
}

vector<int>collect(int node){
    elements.clear();
    collect_fn(node,0,TREE_SIZE);
    return elements;
}

int insert_fn(int old_node,int x,int q,int l,int r){
    if(x<l||r<=x)
        return old_node;
    
    int node=curr_node++;
    if(old_node){
        ch1[node]=ch1[old_node];
        ch2[node]=ch2[old_node];
        val[node]=val[old_node];
    }
    
    if(l==r-1){
        val[node]+=q;
    }else{
        int m=(l+r)/2;
        ch1[node]=insert_fn(ch1[node],x,q,l,m);
        ch2[node]=insert_fn(ch2[node],x,q,m,r);
    }
    
    if(ch1[node]==0&&ch2[node]==0&&val[node]==0)
        return 0;
    
    return node;
}

int insert(int old_node,int x,int q){
    return insert_fn(old_node,x,q,0,TREE_SIZE);
}

// time travelling multiset
class TTMS{
    vector<int>days;
    vector<int>sets;
    vector<vector<int>>collected;
    vector<bool>collectedt;
public:
    TTMS(){
        days={-1};
        sets={curr_node++};
        collected={{}};
        collectedt={false};
    }
    
    void add_new_day(int day){
        days.push_back(day);
        sets.push_back(sets.back());
        collected.push_back({});
        collectedt.push_back(false);
    }
    
    void insert(int el){
        sets.back()=::insert(sets.back(),el,1);
    }
    
    void remove(int el){
        sets.back()=::insert(sets.back(),el,-1);
    }
    
    vector<int> get(int day){
        int l=0,r=(int)sets.size();
        while(l!=r-1){
            int m=(l+r)/2;
            if(day<days[m])
                r=m;
            else
                l=m;
        }
        if(collectedt[l])
            return collected[l];
        vector<int>res=collect(sets[l]);
        collectedt[l]=true;
        collected[l]=res;
        return res;
    }
};


int get_closest(vector<int>a,vector<int>b){
    int res=1e9;
    for(int i:a)
        for(int j:b){
            res=min(res,abs(i-j));
        }
    return res;
}


int n;
int heights[100000];
TTMS ttms[100000];

void init(int N, int D, int H[]) {
    n=N;
    for(int i=0;i<n;i++)
        heights[i]=H[i];
}

ll to(int a,int b){
    if(a<b)
        swap(a,b);
    return a+((ll)b<<32);
}

void curseChanges(int U, int A[], int B[]) {
    unordered_set<ll>conns;
    for(int day=0;day<U;day++){
        int a=A[day],b=B[day];
        ll conn=to(a,b);
        ttms[a].add_new_day(day+1);
        ttms[b].add_new_day(day+1);
        if(conns.find(conn)==conns.end()){
            conns.insert(conn);
            ttms[a].insert(heights[b]);
            ttms[b].insert(heights[a]);
        }else{
            conns.erase(conn);
            ttms[a].remove(heights[b]);
            ttms[b].remove(heights[a]);
        }
    }
}


unordered_map<ll,int>dp;
int question(int x, int y, int v) {
    ll k=x+(ll)1e5*y+(ll)1e10*v;
    if(dp.find(k)!=dp.end())
        return dp[k];
    
    vector<int>a=ttms[x].get(v);
    vector<int>b=ttms[y].get(v);
    
    int res=get_closest(a,b);
    dp[k]=res;
    return res;
}

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