제출 #794084

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
794084		JakobZorz	The Potion of Great Power (CEOI20_potion)	C++14	17 / 100	820 ms	262148 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;

int val[NUM_NODES];
int ch1[NUM_NODES];
int ch2[NUM_NODES];
vector<int>*elements[NUM_NODES];
int curr_node=1;

void collect_fn(int node,int l,int r){
    if(l==r-1){
        if(val[node]!=0){
            elements[node]=new vector<int>;
            elements[node]->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);
    
    if(elements[ch1[node]]==nullptr)
        elements[node]=elements[ch2[node]];
    else if(elements[ch2[node]]==nullptr)
        elements[node]=elements[ch1[node]];
    else{
        vector<int>*a=elements[ch1[node]],*b=elements[ch2[node]];
        elements[node]=new vector<int>(a->begin(),a->end());
        elements[node]->insert(elements[node]->end(),b->begin(),b->end());
    }
}

void collect(int node){
    collect_fn(node,0,TREE_SIZE);
}

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;
public:
    TTMS(){
        days={-1};
        sets={curr_node++};
    }
    
    void add_new_day(int day){
        days.push_back(day);
        sets.push_back(sets.back());
    }
    
    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;
        }
        collect(sets[l]);
        return elements[sets[l]];
    }
};


int get_closest(vector<int>&a,vector<int>&b){
    int res=1e9;
    int i=0,j=0;
    while(i<(int)a.size()&&j<(int)b.size()){
        res=min(res,abs(a[i]-b[j]));
        if(i<(int)a.size()&&a[i]<=b[j])
            i++;
        else if(j<(int)b.size()&&b[j]<=a[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);
    
    if(a==nullptr||b==nullptr)
        return 1e9;
    
    int res=get_closest(*a,*b);
    //dp[k]=res;
    return res;
}

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