Submission #945077

#	Time	Username	Problem	Language	Result	Execution time	Memory
945077		JakobZorz	Examination (JOI19_examination)	C++17	0 / 100	3075 ms	12748 KiB

examination

#include<iostream>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
#include<limits.h>
#include<math.h>
#include<map>
#include<set>
#include<unordered_map>
#include<unordered_set>
#include<iomanip>
#include<cstring>
#include<random>
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
using namespace std;

struct Obj{
    int a,b,c;
    int res=0;
    bool is_q=false;
};

bool cmp1(Obj*a,Obj*b){
    if(a->c==b->c&&a->b==b->b)
        return a->a<b->a;
    if(a->c==b->c)
        return a->b<b->b;
    return a->c<b->c;
}

void proc(vector<Obj*>vals,vector<Obj*>qrs){
    for(auto i:qrs){
        for(auto j:vals){
            if(j->a>=i->a&&j->b>=i->b)
                i->res++;
        }
    }
}

void dc(vector<Obj*>arr){
    if(arr.empty())
        return;
    int n=(int)arr.size();
    vector<Obj*>qrs,vals;
    vector<Obj*>arr1,arr2;
    for(int i=n/2;i<n;i++){
        arr2.push_back(arr[i]);
        if(!arr[i]->is_q)
            vals.push_back(arr[i]);
    }
    for(int i=0;i<n/2;i++){
        arr1.push_back(arr[i]);
        if(arr[i]->is_q)
            qrs.push_back(arr[i]);
    }
    proc(vals,qrs);
    if(n>1){
        dc(arr1);
        dc(arr2);
    }
}

void solve(){
    int n,q;
    cin>>n>>q;
    vector<Obj>arr(n);
    for(Obj&i:arr){
        cin>>i.a>>i.b;
        i.c=i.a+i.b;
    }
    vector<Obj>qrs(q);
    for(Obj&i:qrs){
        cin>>i.a>>i.b>>i.c;
        i.is_q=true;
    }
    vector<Obj*>all;
    for(Obj&i:arr)
        all.push_back(&i);
    for(Obj&i:qrs)
        all.push_back(&i);
    sort(all.begin(),all.end(),cmp1);
    dc(all);
    for(auto i:qrs)
        cout<<i.res<<"\n";
}

int main(){
    ios::sync_with_stdio(false);cout.tie(NULL);cin.tie(NULL);
    //freopen("/Users/jakob/cp_testing/test.txt","r",stdin);freopen("output.out","w",stdout);
    int t=1;//cin>>t;
    while(t--)solve();
    return 0;
}


/*

5 4
35 100
70 70
45 15
80 40
20 95
20 50 120
10 10 100
60 60 80
0 100 100
 
 */

• Subtask 1: 0 / 2
• Subtask 2: 0 / 20
• Subtask 3: 0 / 21
• Subtask 4: 0 / 57