oj.uz

답안 #623305

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
623305 2022-08-05T12:33:08 Z Iwanttobreakfree Examination (JOI19_examination) C++17
2 / 100
 3000 ms 31340 KB 
#include <iostream>
#include <vector>
#include <unordered_map>
#include <cmath>
#include <algorithm>
#include <set>
using namespace std;
#define pii pair<int,int>
unordered_map<int,int> mp_m,mp_i,mp_a,av;
vector<int> BIT,cnt;
int sz=700,n,q;
int next(int x){return x + (x&(-x));}
int par(int x){return x - (x&(-x));}
bool cmp(pair<int,pair<pii,pii>>& a,pair<int,pair<pii,pii>>& b){
    if(a.first!=b.first)return a.first<b.first;
    if(a.first&1)return a.second.first.second<b.second.first.second;
    return a.second.first.second>b.second.first.second;
}
int bin_find(int x,vector<int>& v){
    int l=0,r=v.size()-1,ans=v.size();
    while(l<=r){
        int mid=(r+l)/2;
        if(v[mid]<x)l=mid+1;
        else {
            ans=mid;
            r=mid-1;
        }
    }
    return ans;
}
void pupd(int x,int k){
    //cout<<x<<' '<<k<<'\n';
    for(int i=x;i<BIT.size();i=next(i))BIT[i]+=k;
}
int sum(int x){
    int ans=0;
    for(int i=x;i>0;i=par(i)){
        ans+=BIT[i];
    }
    return ans;
}
int val(int l,int r){
    return sum(r)-sum(l);
}
void add(int i,vector<vector<int>>& g,vector<int>& exam){
    for(int x:g[i]){
        cnt[x]++;
        if(cnt[x]==2){
            pupd(mp_a[exam[x]]+1,+1);
        }
    }
}
void del(int i,vector<vector<int>>& g,vector<int>& exam){
    for(int x:g[i]){
        if(cnt[x]==2){
            pupd(mp_a[exam[x]]+1,-1);
        }
        cnt[x]--;
    }
}
vector<vector<int>> math,info;
void MO(vector<int>& m,vector<int>& in,vector<int>& av,vector<int>& exam,vector<int>& id){
    int x,y,z;
    vector<pair<int,pair<pii,pii>>> qu(q);
    vector<int> answer(q);
    for(int i=0;i<q;i++){
        cin>>x>>y>>z;
        x=bin_find(x,m);
        y=bin_find(y,in);
        z=bin_find(z,av);
        //cout<<x<<' '<<y<<' '<<z<<' '<<id[x]<<'\n';
        qu[i]={id[y],{{x,y},{z,i}}};
    }
    sort(qu.begin(),qu.end(),cmp);
    int l_math=m.size(),l_info=in.size();
    for(int i=0;i<q;i++){
        int min_math=qu[i].second.first.first,min_info=qu[i].second.first.second,min_av=qu[i].second.second.first;
        //cout<<min_math<<' '<<min_info<<'\n';
        if(min_av==av.size()){
            answer[qu[i].second.second.second]=0;
            continue;
        }
        //cout<<l_math<<' '<<l_info<<'\n';
        while(l_math>min_math){
            l_math--;
            add(l_math,math,exam);
        }
        while(l_math<min_math){
            del(l_math,math,exam);
            l_math++;
        }
        //cout<<l_math<<' '<<l_info<<'\n';
        while(l_info>min_info){
            l_info--;
            //cout<<l_info<<' ';
            add(l_info,info,exam);
        }
        //cout<<l_info<<' ';
        while(l_info<min_info){
            del(l_info,info,exam);
            l_info++;
        }
        //cout<<l_math<<' '<<l_info<<' '<<qu[i].second.second<<' '<<ans<<' '<<sum(min_av)<<'\n';
        answer[qu[i].second.second.second]=val(min_av,BIT.size()-1);
    }
    for(int i=0;i<q;i++)cout<<answer[i]<<'\n';
}
int main(){
    cin.tie(0);
    cout.tie(0);
    ios::sync_with_stdio(false);
    int x,y;
    cin>>n>>q;
    set<int> m,in,av;
    cnt=vector<int>(n);
    vector<int> exam_math(n),exam_info(n),exam_av(n),a,b,c;
    for(int i=0;i<n;i++){
        cin>>x>>y;
        m.insert(x);
        in.insert(y);
        av.insert((x+y));
        exam_math[i]=x;
        exam_info[i]=y;
        exam_av[i]=(x+y);
    }
    mp_m.reserve(131072);
    mp_i.reserve(131072);
    mp_a.reserve(131072);
    int cntm=0,cnti=0,cnta=0;
    for(int x:m){
        mp_m[x]=cntm;
        cntm++;
        a.emplace_back(x);
    }
    for(int x:in){
        mp_i[x]=cnti;
        cnti++;
        b.emplace_back(x);
    }
    for(int x:av){
        mp_a[x]=cnta;
        cnta++;
        c.emplace_back(x);
    }
    BIT=vector<int> (cnta+1);
    math=vector<vector<int>> (cntm,vector<int>());
    info=vector<vector<int>> (cnti,vector<int>());
    for(int i=0;i<n;i++){
        math[mp_m[exam_math[i]]].push_back(i);
        info[mp_i[exam_info[i]]].push_back(i);
    }
    vector<int> id(cnti+1);
    int cur=0,cont=2e6;
    for(int i=0;i<info.size();i++){
        if(info[i].size()>=sz){
            cont--;
            id[i]=cont;
            cont--;
            cur=0;
        }else if(info[i].size()+cur>=sz){
            cur=0;
            id[i]=cont;
            cont--;
        }else{
            cur+=info[i].size();
            id[i]=cont;
        }
    }
    id[cnti]=cont-1;
    MO(a,b,c,exam_av,id);
}

Compilation message

examination.cpp: In function 'void pupd(int, int)':
examination.cpp:33:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for(int i=x;i<BIT.size();i=next(i))BIT[i]+=k;
      |                 ~^~~~~~~~~~~
examination.cpp: In function 'void MO(std::vector<int>&, std::vector<int>&, std::vector<int>&, std::vector<int>&, std::vector<int>&)':
examination.cpp:79:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |         if(min_av==av.size()){
      |            ~~~~~~^~~~~~~~~~~
examination.cpp: In function 'int main()':
examination.cpp:154:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  154 |     for(int i=0;i<info.size();i++){
      |                 ~^~~~~~~~~~~~
examination.cpp:155:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  155 |         if(info[i].size()>=sz){
      |            ~~~~~~~~~~~~~~^~~~
examination.cpp:160:36: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  160 |         }else if(info[i].size()+cur>=sz){
      |                  ~~~~~~~~~~~~~~~~~~^~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3412 KB Output is correct
2 Correct 3 ms 3412 KB Output is correct
3 Correct 2 ms 3540 KB Output is correct
4 Correct 2 ms 3412 KB Output is correct
5 Correct 2 ms 3412 KB Output is correct
6 Correct 2 ms 3540 KB Output is correct
7 Correct 117 ms 4740 KB Output is correct
8 Correct 126 ms 4748 KB Output is correct
9 Correct 118 ms 4748 KB Output is correct
10 Correct 121 ms 4356 KB Output is correct
11 Correct 75 ms 4360 KB Output is correct
12 Correct 45 ms 3716 KB Output is correct
13 Correct 122 ms 4752 KB Output is correct
14 Correct 117 ms 4692 KB Output is correct
15 Correct 118 ms 4744 KB Output is correct
16 Correct 123 ms 4352 KB Output is correct
17 Correct 93 ms 4328 KB Output is correct
18 Correct 9 ms 3668 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3083 ms 31340 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3083 ms 31340 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 3412 KB Output is correct
2 Correct 3 ms 3412 KB Output is correct
3 Correct 2 ms 3540 KB Output is correct
4 Correct 2 ms 3412 KB Output is correct
5 Correct 2 ms 3412 KB Output is correct
6 Correct 2 ms 3540 KB Output is correct
7 Correct 117 ms 4740 KB Output is correct
8 Correct 126 ms 4748 KB Output is correct
9 Correct 118 ms 4748 KB Output is correct
10 Correct 121 ms 4356 KB Output is correct
11 Correct 75 ms 4360 KB Output is correct
12 Correct 45 ms 3716 KB Output is correct
13 Correct 122 ms 4752 KB Output is correct
14 Correct 117 ms 4692 KB Output is correct
15 Correct 118 ms 4744 KB Output is correct
16 Correct 123 ms 4352 KB Output is correct
17 Correct 93 ms 4328 KB Output is correct
18 Correct 9 ms 3668 KB Output is correct
19 Execution timed out 3083 ms 31340 KB Time limit exceeded
20 Halted 0 ms 0 KB -