oj.uz

Submission #623399

# Submission time Handle Problem Language Result Execution time Memory
623399 2022-08-05T14:19:14 Z Iwanttobreakfree Examination (JOI19_examination) C++
43 / 100
 3000 ms 43796 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=750,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 3412 KB Output is correct
2 Correct 2 ms 3540 KB Output is correct
3 Correct 2 ms 3540 KB Output is correct
4 Correct 2 ms 3540 KB Output is correct
5 Correct 2 ms 3432 KB Output is correct
6 Correct 2 ms 3412 KB Output is correct
7 Correct 35 ms 4756 KB Output is correct
8 Correct 33 ms 4740 KB Output is correct
9 Correct 32 ms 4692 KB Output is correct
10 Correct 34 ms 4380 KB Output is correct
11 Correct 22 ms 4372 KB Output is correct
12 Correct 13 ms 3732 KB Output is correct
13 Correct 34 ms 4760 KB Output is correct
14 Correct 34 ms 4748 KB Output is correct
15 Correct 35 ms 4756 KB Output is correct
16 Correct 6 ms 4308 KB Output is correct
17 Correct 30 ms 4288 KB Output is correct
18 Correct 3 ms 3712 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2671 ms 31844 KB Output is correct
2 Correct 2746 ms 31856 KB Output is correct
3 Correct 2725 ms 31892 KB Output is correct
4 Correct 1392 ms 22856 KB Output is correct
5 Correct 322 ms 22728 KB Output is correct
6 Correct 95 ms 9280 KB Output is correct
7 Correct 1611 ms 31844 KB Output is correct
8 Correct 2143 ms 31868 KB Output is correct
9 Correct 1957 ms 31868 KB Output is correct
10 Correct 198 ms 22420 KB Output is correct
11 Correct 1240 ms 22604 KB Output is correct
12 Correct 48 ms 8640 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2671 ms 31844 KB Output is correct
2 Correct 2746 ms 31856 KB Output is correct
3 Correct 2725 ms 31892 KB Output is correct
4 Correct 1392 ms 22856 KB Output is correct
5 Correct 322 ms 22728 KB Output is correct
6 Correct 95 ms 9280 KB Output is correct
7 Correct 1611 ms 31844 KB Output is correct
8 Correct 2143 ms 31868 KB Output is correct
9 Correct 1957 ms 31868 KB Output is correct
10 Correct 198 ms 22420 KB Output is correct
11 Correct 1240 ms 22604 KB Output is correct
12 Correct 48 ms 8640 KB Output is correct
13 Correct 2797 ms 31880 KB Output is correct
14 Correct 2943 ms 31876 KB Output is correct
15 Correct 2725 ms 31864 KB Output is correct
16 Correct 1488 ms 22980 KB Output is correct
17 Correct 307 ms 22664 KB Output is correct
18 Correct 109 ms 9244 KB Output is correct
19 Correct 2752 ms 31896 KB Output is correct
20 Correct 2712 ms 31884 KB Output is correct
21 Correct 2217 ms 31880 KB Output is correct
22 Correct 193 ms 22464 KB Output is correct
23 Correct 1227 ms 22556 KB Output is correct
24 Correct 50 ms 8624 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3412 KB Output is correct
2 Correct 2 ms 3540 KB Output is correct
3 Correct 2 ms 3540 KB Output is correct
4 Correct 2 ms 3540 KB Output is correct
5 Correct 2 ms 3432 KB Output is correct
6 Correct 2 ms 3412 KB Output is correct
7 Correct 35 ms 4756 KB Output is correct
8 Correct 33 ms 4740 KB Output is correct
9 Correct 32 ms 4692 KB Output is correct
10 Correct 34 ms 4380 KB Output is correct
11 Correct 22 ms 4372 KB Output is correct
12 Correct 13 ms 3732 KB Output is correct
13 Correct 34 ms 4760 KB Output is correct
14 Correct 34 ms 4748 KB Output is correct
15 Correct 35 ms 4756 KB Output is correct
16 Correct 6 ms 4308 KB Output is correct
17 Correct 30 ms 4288 KB Output is correct
18 Correct 3 ms 3712 KB Output is correct
19 Correct 2671 ms 31844 KB Output is correct
20 Correct 2746 ms 31856 KB Output is correct
21 Correct 2725 ms 31892 KB Output is correct
22 Correct 1392 ms 22856 KB Output is correct
23 Correct 322 ms 22728 KB Output is correct
24 Correct 95 ms 9280 KB Output is correct
25 Correct 1611 ms 31844 KB Output is correct
26 Correct 2143 ms 31868 KB Output is correct
27 Correct 1957 ms 31868 KB Output is correct
28 Correct 198 ms 22420 KB Output is correct
29 Correct 1240 ms 22604 KB Output is correct
30 Correct 48 ms 8640 KB Output is correct
31 Correct 2797 ms 31880 KB Output is correct
32 Correct 2943 ms 31876 KB Output is correct
33 Correct 2725 ms 31864 KB Output is correct
34 Correct 1488 ms 22980 KB Output is correct
35 Correct 307 ms 22664 KB Output is correct
36 Correct 109 ms 9244 KB Output is correct
37 Correct 2752 ms 31896 KB Output is correct
38 Correct 2712 ms 31884 KB Output is correct
39 Correct 2217 ms 31880 KB Output is correct
40 Correct 193 ms 22464 KB Output is correct
41 Correct 1227 ms 22556 KB Output is correct
42 Correct 50 ms 8624 KB Output is correct
43 Execution timed out 3074 ms 43796 KB Time limit exceeded
44 Halted 0 ms 0 KB -