Submission #619114

#	Time	Username	Problem	Language	Result	Execution time	Memory
619114		Iwanttobreakfree	Plahte (COCI17_plahte)	C++17	0 / 160	385 ms	76712 KiB

plahte

#include <iostream>
#include <vector>
#include <algorithm>
#include <unordered_map>
#include <set>
using namespace std;
#define pii pair<int,int>
const int INF=1e9+7;
int find_sheet(int n,int l,int r,vector<int>& t,int x,int a){
    if(l==r&&t[n]>=x)return l;
    if(l>a)return -1;
    int mid=(r+l)/2,ans=-1;
    if(mid+1<a&&t[(n<<1)+1]>=x)ans=find_sheet((n<<1)+1,mid+1,r,t,x,a);
    if(ans==-1)ans=find_sheet((n<<1),l,mid,t,x,a);
    return ans;
}
void pupd(int n,int l,int r,vector<int>& t,int a,int x){
    if(l>a||r<a)return;
    if(l==r&&l==a)t[n]=x;
    else{
        int mid=(r+l)/2;
        pupd(n<<1,l,mid,t,a,x);
        pupd((n<<1)+1,mid+1,r,t,a,x);
        t[n]=max(t[n<<1],t[(n<<1)+1]);
    }
}
set<int> dfs(int a,vector<vector<int>>& g,vector<int>& ans,vector<set<int>>& color){
    set<int> cnt=color[a];
    for(int x:g[a]){
        set<int> cnt2=dfs(x,g,ans,color);
        if(cnt2.size()>cnt.size())swap(cnt,cnt2);
        for(int c:cnt2)cnt.insert(c);
    }
    ans[a]=cnt.size();
    return cnt;
}
int main(){
    int n,m,a,b,c,d;
    cin>>n>>m;
    vector<pair<pii,pii>> sheet(n+1);
    sheet[0]={{0,0},{INF,INF}};
    set<int> s;
    vector<pair<pii,int>> ball(m);
    for(int i=1;i<=n;i++){
        cin>>a>>b>>c>>d;
        sheet[i]={{a,b},{c,d}};
        s.insert(b);
        s.insert(d);
    }
    for(int i=0;i<m;i++){
        cin>>a>>b>>c;
        ball[i]={{a,b},c};
        s.insert(b);
    }
    s.insert(0);
    s.insert(INF);
    unordered_map<int,int> mp;
    mp.reserve(262144);
    int cnt=0;
    for(int x:s){
        mp[x]=cnt;
        cnt++;
    }
    vector<int> tr(4*cnt),active(cnt),ans(n+1);
    vector<pair<pair<pii,pii>,int>> q;
    vector<set<int>> color(n+1,set<int>());
    vector<vector<int>> g(n+1,vector<int>());
    //1 add sheet and search bigger sheet
    //3 delete
    //2 search first sheet of ith ball
    for(int i=0;i<=n;i++){
        q.push_back({{{sheet[i].first.first,sheet[i].first.second},{1,sheet[i].second.second}},i});
        q.push_back({{{sheet[i].second.first,sheet[i].second.second},{3,sheet[i].first.second}},i});
    }
    for(int j=0;j<m;j++){
        q.push_back({{ball[j].first,{2,ball[j].second}},j});
    }
    sort(q.begin(),q.end());
    //cout<<cnt<<'\n';
    for(int i=0;i<q.size();i++){
        int t=q[i].first.second.first,sheet=q[i].second,y1=q[i].first.first.second,y2=q[i].first.second.second;
        //cout<<q[i].first.first.first<<' '<<y1<<' '<<t<<'\n';
        if(t==1){
            if(i){
                int l=find_sheet(1,0,cnt-1,tr,mp[y2],mp[y1]);
                if(l!=-1)g[active[l]].push_back(sheet);
            }
            //cout<<mp[y1]<<' '<<mp[y2]<<' '<<y1<<' '<<y2<<'\n';
            pupd(1,0,cnt-1,tr,mp[y1],mp[y2]);
            active[mp[y1]]=sheet;
        }if(t==3){
            pupd(1,0,cnt-1,tr,mp[y2],0);
            active[mp[y2]]=0;
        }if(t==2){
            int l=find_sheet(1,0,cnt-1,tr,mp[y1],mp[y1]);
            if(l!=-1)color[active[l]].insert(y2);
        }
    }
    /*for(int i=0;i<=n;i++){
        cout<<i<<':';
        for(int x:color[i])cout<<x<<' ';
        cout<<endl;
    }*/
    dfs(0,g,ans,color);
    for(int i=1;i<=n;i++)cout<<ans[i]<<'\n';
}

Compilation message (stderr)

plahte.cpp: In function 'int main()':
plahte.cpp:80:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<std::pair<int, int>, std::pair<int, int> >, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |     for(int i=0;i<q.size();i++){
      |                 ~^~~~~~~~~

• Subtask 1: 0 / 32
• Subtask 2: 0 / 32
• Subtask 3: 0 / 32
• Subtask 4: 0 / 32
• Subtask 5: 0 / 32