제출 #702576

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
702576		victor_gao	Examination (JOI19_examination)	C++17	100 / 100	903 ms	93676 KiB

examination

//#pragma GCC optimize("Ofast,unroll-loops,O3")
//#pragma GCC optimize("avx,avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,fma,tune=native")
#include<bits/stdc++.h>
//#include<bits/extc++.h>
//#pragma pack(1)
#define fast ios::sync_with_stdio(0); cin.tie(0);
#define pii pair<int,int>
#define x first
#define y second
#define N 200015
using namespace std;
//using namespace __gnu_pbds;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//typedef tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update> order_multiset;
//typedef tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> order_set;
struct lisan{
    vector<int>vt;
    void in(int x){ vt.push_back(x); }
    void build(){
        sort(vt.begin(),vt.end());
        vt.resize(unique(vt.begin(),vt.end())-vt.begin());
    }
    int idx(int x){ return upper_bound(vt.begin(),vt.end(),x)-vt.begin(); }
}uni;
struct Query{
    int a,b,c,i;
    bool operator<(const Query p)const{
        if (a!=p.a) return a>p.a;
        else if (b!=p.b) return b>p.b;
        return c>p.c;
    }
};
struct BIT{
    int n,total=0;
    vector<int>bit;
    void init(int _n){
        n=_n;
        bit.resize(n+1);
    }
    void modify(int p,int c){
        total++;
        for (;p<=n;p+=(p&-p))
            bit[p]+=c;
    }
    int query(int p){
        int ans=0;
        for (;p>0;p-=(p&-p))
            ans+=bit[p];
        return ans;
    }
};
struct segtree{
    vector<int>all[4*N];
    BIT bit[4*N];   
    void add(int l,int r,int i,int p,int c){
        all[i].push_back(c);
        if (l==r) return;
        int mid=(l+r)>>1;
        if (p<=mid) add(l,mid,2*i,p,c);
        else add(mid+1,r,2*i+1,p,c);
    }
    void build(int l,int r,int i){
        all[i].push_back(-1);
        sort(all[i].begin(),all[i].end());
        all[i].resize(unique(all[i].begin(),all[i].end())-all[i].begin());
        bit[i].init(all[i].size());
        if (l==r) return;
        int mid=(l+r)>>1;
        build(l,mid,2*i);
        build(mid+1,r,2*i+1);
    }
    void modify(int l,int r,int i,int qp,int c){
        int p=lower_bound(all[i].begin(),all[i].end(),c)-all[i].begin();
        bit[i].modify(p,1);
     //   cout<<"add "<<l<<" "<<r<<" "<<p<<'\n';
        if (l==r) return;
        int mid=(l+r)>>1;
        if (qp<=mid) modify(l,mid,2*i,qp,c);
        else modify(mid+1,r,2*i+1,qp,c);
    }
    int query(int l,int r,int i,int ll,int rr,int c){
        if (ll>rr) return 0;
        if (ll<=l&&rr>=r){
            int p=lower_bound(all[i].begin(),all[i].end(),c)-all[i].begin(); p--;
       //     cout<<"query "<<l<<" "<<r<<" "<<c<<" -> "<<p<<" "<<bit[i].total<<" "<<bit[i].query(p)<<'\n';
            return bit[i].total-bit[i].query(p);
        }
        int mid=(l+r)>>1;
        if (rr<=mid) return query(l,mid,2*i,ll,rr,c);
        else if (ll>mid) return query(mid+1,r,2*i+1,ll,rr,c);
        else return query(l,mid,2*i,ll,rr,c)+query(mid+1,r,2*i+1,ll,rr,c);
    }
}seg;
int n,q,s[N],t[N],total[N];
int ans[N];
vector<Query>qus;
vector<pair<int,pii> >all;
signed main(){
    fast
    cin>>n>>q;
    for (int i=1;i<=n;i++){
        cin>>s[i]>>t[i];
        uni.in(t[i]);
        total[i]=s[i]+t[i];
    }
    for (int i=1;i<=q;i++){
        Query p; p.i=i;
        cin>>p.a>>p.b>>p.c;
        uni.in(p.b);
        qus.push_back(p);
    }
    uni.build();
    for (int i=1;i<=n;i++){
        t[i]=uni.idx(t[i]);
        seg.add(1,n+q,1,t[i],total[i]);
        all.push_back({s[i],{t[i],total[i]}});
    }
    seg.build(1,n+q,1);
    sort(qus.begin(),qus.end());
    sort(all.begin(),all.end(),greater<pair<int,pii> >());
    /*
    cout<<'\n';
    for (auto i:all){
        cout<<i.x<<' '<<i.y.x<<" "<<i.y.y<<'\n';
    }
    cout<<'\n';
    */
    int p=0;
    for (auto i:qus){
        while (p<n&&all[p].x>=i.a){
            seg.modify(1,n+q,1,all[p].y.x,all[p].y.y);
            p++;
        }
        ans[i.i]=seg.query(1,n+q,1,uni.idx(i.b),n+q,i.c);
       // cout<<i.a<<" "<<uni.idx(i.b)<<" "<<i.c<<" -> "<<p<<" is "<<ans[i.i]<<'\n';
    }
    for (int i=1;i<=q;i++)
        cout<<ans[i]<<"\n";
}

• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 57 / 57