oj.uz

Submission #623276

# Submission time Handle Problem Language Result Execution time Memory
623276 2022-08-05T11:50:11 Z Iwanttobreakfree Examination (JOI19_examination) C++
43 / 100
 3000 ms 43840 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=900,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];
        //cout<<i<<' '<<BIT[i]<<'\n';
    }
    return ans;
}
int val(int l,int r){
    return sum(r)-sum(l);
}
void add(int i,vector<vector<int>>& g,vector<int>& exam){
    //cout<<i<<' ';
    for(int x:g[i]){
        cnt[x]++;
        if(cnt[x]==2){
            pupd(mp_a[exam[x]]+1,+1);
        }
    }
    //cout<<ans<<' '<<'\n';
}
void del(int i,vector<vector<int>>& g,vector<int>& exam){
    //cout<<i<<' ';
    for(int x:g[i]){
        if(cnt[x]==2){
            pupd(mp_a[exam[x]]+1,-1);
        }
        cnt[x]--;
    }
    //cout<<ans<<'\n';
}
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[x],{{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.push_back(x);
    }
    for(int x:in){
        mp_i[x]=cnti;
        cnti++;
        b.push_back(x);
    }
    for(int x:av){
        mp_a[x]=cnta;
        cnta++;
        c.push_back(x);
    }
    BIT=vector<int> (max(cnta,cnti)+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(cntm+1);
    int cur=0,cont=0;
    for(int i=0;i<math.size();i++){
        if(math[i].size()>=sz){
            cont++;
            id[i]=cont;
            cont++;
            cur=0;
        }else if(math[i].size()+cur>sz){
            cur=0;
            id[i]=cont;
            cont++;
        }else{
            cur+=math[i].size();
            id[i]=cont;
        }
    }
    id[cntm]=cont;
    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:84:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |         if(min_av==av.size()){
      |            ~~~~~~^~~~~~~~~~~
examination.cpp: In function 'int main()':
examination.cpp:159:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  159 |     for(int i=0;i<math.size();i++){
      |                 ~^~~~~~~~~~~~
examination.cpp:160:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  160 |         if(math[i].size()>=sz){
      |            ~~~~~~~~~~~~~~^~~~
examination.cpp:165:36: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  165 |         }else if(math[i].size()+cur>sz){
      |                  ~~~~~~~~~~~~~~~~~~^~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3540 KB Output is correct
2 Correct 2 ms 3412 KB Output is correct
3 Correct 2 ms 3540 KB Output is correct
4 Correct 2 ms 3540 KB Output is correct
5 Correct 3 ms 3540 KB Output is correct
6 Correct 2 ms 3412 KB Output is correct
7 Correct 37 ms 4760 KB Output is correct
8 Correct 36 ms 4756 KB Output is correct
9 Correct 43 ms 4724 KB Output is correct
10 Correct 33 ms 4372 KB Output is correct
11 Correct 30 ms 4364 KB Output is correct
12 Correct 17 ms 3736 KB Output is correct
13 Correct 38 ms 4756 KB Output is correct
14 Correct 37 ms 4760 KB Output is correct
15 Correct 38 ms 4756 KB Output is correct
16 Correct 6 ms 4308 KB Output is correct
17 Correct 32 ms 4356 KB Output is correct
18 Correct 3 ms 3668 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2691 ms 31852 KB Output is correct
2 Correct 2625 ms 31844 KB Output is correct
3 Correct 2848 ms 31888 KB Output is correct
4 Correct 1500 ms 22968 KB Output is correct
5 Correct 320 ms 22604 KB Output is correct
6 Correct 89 ms 9276 KB Output is correct
7 Correct 1781 ms 31848 KB Output is correct
8 Correct 2514 ms 31864 KB Output is correct
9 Correct 2340 ms 32012 KB Output is correct
10 Correct 163 ms 22356 KB Output is correct
11 Correct 1296 ms 22608 KB Output is correct
12 Correct 54 ms 8580 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2691 ms 31852 KB Output is correct
2 Correct 2625 ms 31844 KB Output is correct
3 Correct 2848 ms 31888 KB Output is correct
4 Correct 1500 ms 22968 KB Output is correct
5 Correct 320 ms 22604 KB Output is correct
6 Correct 89 ms 9276 KB Output is correct
7 Correct 1781 ms 31848 KB Output is correct
8 Correct 2514 ms 31864 KB Output is correct
9 Correct 2340 ms 32012 KB Output is correct
10 Correct 163 ms 22356 KB Output is correct
11 Correct 1296 ms 22608 KB Output is correct
12 Correct 54 ms 8580 KB Output is correct
13 Correct 2696 ms 31884 KB Output is correct
14 Correct 2691 ms 31880 KB Output is correct
15 Correct 2600 ms 32040 KB Output is correct
16 Correct 1400 ms 22988 KB Output is correct
17 Correct 307 ms 22632 KB Output is correct
18 Correct 88 ms 9280 KB Output is correct
19 Correct 2685 ms 31940 KB Output is correct
20 Correct 2699 ms 32112 KB Output is correct
21 Correct 2372 ms 31872 KB Output is correct
22 Correct 157 ms 22372 KB Output is correct
23 Correct 1297 ms 22612 KB Output is correct
24 Correct 47 ms 8588 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3540 KB Output is correct
2 Correct 2 ms 3412 KB Output is correct
3 Correct 2 ms 3540 KB Output is correct
4 Correct 2 ms 3540 KB Output is correct
5 Correct 3 ms 3540 KB Output is correct
6 Correct 2 ms 3412 KB Output is correct
7 Correct 37 ms 4760 KB Output is correct
8 Correct 36 ms 4756 KB Output is correct
9 Correct 43 ms 4724 KB Output is correct
10 Correct 33 ms 4372 KB Output is correct
11 Correct 30 ms 4364 KB Output is correct
12 Correct 17 ms 3736 KB Output is correct
13 Correct 38 ms 4756 KB Output is correct
14 Correct 37 ms 4760 KB Output is correct
15 Correct 38 ms 4756 KB Output is correct
16 Correct 6 ms 4308 KB Output is correct
17 Correct 32 ms 4356 KB Output is correct
18 Correct 3 ms 3668 KB Output is correct
19 Correct 2691 ms 31852 KB Output is correct
20 Correct 2625 ms 31844 KB Output is correct
21 Correct 2848 ms 31888 KB Output is correct
22 Correct 1500 ms 22968 KB Output is correct
23 Correct 320 ms 22604 KB Output is correct
24 Correct 89 ms 9276 KB Output is correct
25 Correct 1781 ms 31848 KB Output is correct
26 Correct 2514 ms 31864 KB Output is correct
27 Correct 2340 ms 32012 KB Output is correct
28 Correct 163 ms 22356 KB Output is correct
29 Correct 1296 ms 22608 KB Output is correct
30 Correct 54 ms 8580 KB Output is correct
31 Correct 2696 ms 31884 KB Output is correct
32 Correct 2691 ms 31880 KB Output is correct
33 Correct 2600 ms 32040 KB Output is correct
34 Correct 1400 ms 22988 KB Output is correct
35 Correct 307 ms 22632 KB Output is correct
36 Correct 88 ms 9280 KB Output is correct
37 Correct 2685 ms 31940 KB Output is correct
38 Correct 2699 ms 32112 KB Output is correct
39 Correct 2372 ms 31872 KB Output is correct
40 Correct 157 ms 22372 KB Output is correct
41 Correct 1297 ms 22612 KB Output is correct
42 Correct 47 ms 8588 KB Output is correct
43 Execution timed out 3063 ms 43840 KB Time limit exceeded
44 Halted 0 ms 0 KB -