oj.uz

Submission #623394

# Submission time Handle Problem Language Result Execution time Memory
623394 2022-08-05T14:14:03 Z Iwanttobreakfree Examination (JOI19_examination) C++
43 / 100
 3000 ms 43792 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=1000,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.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]]].emplace_back(i);
        info[mp_i[exam_info[i]]].emplace_back(i);
    }
    vector<int> id(cntm+1);
    int cur=0,cont=2e6;
    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 3412 KB Output is correct
4 Correct 2 ms 3540 KB Output is correct
5 Correct 2 ms 3412 KB Output is correct
6 Correct 2 ms 3540 KB Output is correct
7 Correct 46 ms 4756 KB Output is correct
8 Correct 45 ms 4772 KB Output is correct
9 Correct 42 ms 4748 KB Output is correct
10 Correct 38 ms 4428 KB Output is correct
11 Correct 27 ms 4360 KB Output is correct
12 Correct 15 ms 3668 KB Output is correct
13 Correct 41 ms 4752 KB Output is correct
14 Correct 43 ms 4764 KB Output is correct
15 Correct 42 ms 4764 KB Output is correct
16 Correct 6 ms 4360 KB Output is correct
17 Correct 37 ms 4352 KB Output is correct
18 Correct 4 ms 3668 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2775 ms 31848 KB Output is correct
2 Correct 2674 ms 31920 KB Output is correct
3 Correct 2844 ms 31884 KB Output is correct
4 Correct 1509 ms 22888 KB Output is correct
5 Correct 254 ms 22744 KB Output is correct
6 Correct 91 ms 9276 KB Output is correct
7 Correct 1864 ms 31848 KB Output is correct
8 Correct 2632 ms 31992 KB Output is correct
9 Correct 2542 ms 31940 KB Output is correct
10 Correct 168 ms 22312 KB Output is correct
11 Correct 1351 ms 22604 KB Output is correct
12 Correct 48 ms 8636 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2775 ms 31848 KB Output is correct
2 Correct 2674 ms 31920 KB Output is correct
3 Correct 2844 ms 31884 KB Output is correct
4 Correct 1509 ms 22888 KB Output is correct
5 Correct 254 ms 22744 KB Output is correct
6 Correct 91 ms 9276 KB Output is correct
7 Correct 1864 ms 31848 KB Output is correct
8 Correct 2632 ms 31992 KB Output is correct
9 Correct 2542 ms 31940 KB Output is correct
10 Correct 168 ms 22312 KB Output is correct
11 Correct 1351 ms 22604 KB Output is correct
12 Correct 48 ms 8636 KB Output is correct
13 Correct 2764 ms 31876 KB Output is correct
14 Correct 2752 ms 31880 KB Output is correct
15 Correct 2669 ms 31864 KB Output is correct
16 Correct 1511 ms 22908 KB Output is correct
17 Correct 297 ms 22728 KB Output is correct
18 Correct 92 ms 9276 KB Output is correct
19 Correct 2746 ms 31856 KB Output is correct
20 Correct 2784 ms 31880 KB Output is correct
21 Correct 2565 ms 31876 KB Output is correct
22 Correct 154 ms 22384 KB Output is correct
23 Correct 1364 ms 22624 KB Output is correct
24 Correct 49 ms 8640 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 3412 KB Output is correct
4 Correct 2 ms 3540 KB Output is correct
5 Correct 2 ms 3412 KB Output is correct
6 Correct 2 ms 3540 KB Output is correct
7 Correct 46 ms 4756 KB Output is correct
8 Correct 45 ms 4772 KB Output is correct
9 Correct 42 ms 4748 KB Output is correct
10 Correct 38 ms 4428 KB Output is correct
11 Correct 27 ms 4360 KB Output is correct
12 Correct 15 ms 3668 KB Output is correct
13 Correct 41 ms 4752 KB Output is correct
14 Correct 43 ms 4764 KB Output is correct
15 Correct 42 ms 4764 KB Output is correct
16 Correct 6 ms 4360 KB Output is correct
17 Correct 37 ms 4352 KB Output is correct
18 Correct 4 ms 3668 KB Output is correct
19 Correct 2775 ms 31848 KB Output is correct
20 Correct 2674 ms 31920 KB Output is correct
21 Correct 2844 ms 31884 KB Output is correct
22 Correct 1509 ms 22888 KB Output is correct
23 Correct 254 ms 22744 KB Output is correct
24 Correct 91 ms 9276 KB Output is correct
25 Correct 1864 ms 31848 KB Output is correct
26 Correct 2632 ms 31992 KB Output is correct
27 Correct 2542 ms 31940 KB Output is correct
28 Correct 168 ms 22312 KB Output is correct
29 Correct 1351 ms 22604 KB Output is correct
30 Correct 48 ms 8636 KB Output is correct
31 Correct 2764 ms 31876 KB Output is correct
32 Correct 2752 ms 31880 KB Output is correct
33 Correct 2669 ms 31864 KB Output is correct
34 Correct 1511 ms 22908 KB Output is correct
35 Correct 297 ms 22728 KB Output is correct
36 Correct 92 ms 9276 KB Output is correct
37 Correct 2746 ms 31856 KB Output is correct
38 Correct 2784 ms 31880 KB Output is correct
39 Correct 2565 ms 31876 KB Output is correct
40 Correct 154 ms 22384 KB Output is correct
41 Correct 1364 ms 22624 KB Output is correct
42 Correct 49 ms 8640 KB Output is correct
43 Execution timed out 3077 ms 43792 KB Time limit exceeded
44 Halted 0 ms 0 KB -