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Submission #623274

# Submission time Handle Problem Language Result Execution time Memory
623274 2022-08-05T11:48:56 Z Iwanttobreakfree Examination (JOI19_examination) C++17
43 / 100
 3000 ms 43828 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];
        //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 3412 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 3 ms 3540 KB Output is correct
6 Correct 2 ms 3412 KB Output is correct
7 Correct 32 ms 4744 KB Output is correct
8 Correct 29 ms 4760 KB Output is correct
9 Correct 31 ms 4764 KB Output is correct
10 Correct 27 ms 4380 KB Output is correct
11 Correct 21 ms 4364 KB Output is correct
12 Correct 14 ms 3668 KB Output is correct
13 Correct 31 ms 4764 KB Output is correct
14 Correct 32 ms 4752 KB Output is correct
15 Correct 31 ms 4760 KB Output is correct
16 Correct 6 ms 4308 KB Output is correct
17 Correct 24 ms 4308 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 2704 ms 31884 KB Output is correct
2 Correct 2587 ms 31892 KB Output is correct
3 Correct 2520 ms 31948 KB Output is correct
4 Correct 1305 ms 22984 KB Output is correct
5 Correct 277 ms 22628 KB Output is correct
6 Correct 93 ms 9280 KB Output is correct
7 Correct 1458 ms 31964 KB Output is correct
8 Correct 1927 ms 31900 KB Output is correct
9 Correct 1939 ms 31940 KB Output is correct
10 Correct 154 ms 22348 KB Output is correct
11 Correct 1190 ms 22608 KB Output is correct
12 Correct 48 ms 8572 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2704 ms 31884 KB Output is correct
2 Correct 2587 ms 31892 KB Output is correct
3 Correct 2520 ms 31948 KB Output is correct
4 Correct 1305 ms 22984 KB Output is correct
5 Correct 277 ms 22628 KB Output is correct
6 Correct 93 ms 9280 KB Output is correct
7 Correct 1458 ms 31964 KB Output is correct
8 Correct 1927 ms 31900 KB Output is correct
9 Correct 1939 ms 31940 KB Output is correct
10 Correct 154 ms 22348 KB Output is correct
11 Correct 1190 ms 22608 KB Output is correct
12 Correct 48 ms 8572 KB Output is correct
13 Correct 2597 ms 31884 KB Output is correct
14 Correct 2627 ms 31960 KB Output is correct
15 Correct 2686 ms 31872 KB Output is correct
16 Correct 1319 ms 22884 KB Output is correct
17 Correct 275 ms 22628 KB Output is correct
18 Correct 90 ms 9284 KB Output is correct
19 Correct 2755 ms 31856 KB Output is correct
20 Correct 2721 ms 31884 KB Output is correct
21 Correct 2043 ms 31876 KB Output is correct
22 Correct 173 ms 22364 KB Output is correct
23 Correct 1363 ms 22556 KB Output is correct
24 Correct 46 ms 8592 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 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 3 ms 3540 KB Output is correct
6 Correct 2 ms 3412 KB Output is correct
7 Correct 32 ms 4744 KB Output is correct
8 Correct 29 ms 4760 KB Output is correct
9 Correct 31 ms 4764 KB Output is correct
10 Correct 27 ms 4380 KB Output is correct
11 Correct 21 ms 4364 KB Output is correct
12 Correct 14 ms 3668 KB Output is correct
13 Correct 31 ms 4764 KB Output is correct
14 Correct 32 ms 4752 KB Output is correct
15 Correct 31 ms 4760 KB Output is correct
16 Correct 6 ms 4308 KB Output is correct
17 Correct 24 ms 4308 KB Output is correct
18 Correct 3 ms 3668 KB Output is correct
19 Correct 2704 ms 31884 KB Output is correct
20 Correct 2587 ms 31892 KB Output is correct
21 Correct 2520 ms 31948 KB Output is correct
22 Correct 1305 ms 22984 KB Output is correct
23 Correct 277 ms 22628 KB Output is correct
24 Correct 93 ms 9280 KB Output is correct
25 Correct 1458 ms 31964 KB Output is correct
26 Correct 1927 ms 31900 KB Output is correct
27 Correct 1939 ms 31940 KB Output is correct
28 Correct 154 ms 22348 KB Output is correct
29 Correct 1190 ms 22608 KB Output is correct
30 Correct 48 ms 8572 KB Output is correct
31 Correct 2597 ms 31884 KB Output is correct
32 Correct 2627 ms 31960 KB Output is correct
33 Correct 2686 ms 31872 KB Output is correct
34 Correct 1319 ms 22884 KB Output is correct
35 Correct 275 ms 22628 KB Output is correct
36 Correct 90 ms 9284 KB Output is correct
37 Correct 2755 ms 31856 KB Output is correct
38 Correct 2721 ms 31884 KB Output is correct
39 Correct 2043 ms 31876 KB Output is correct
40 Correct 173 ms 22364 KB Output is correct
41 Correct 1363 ms 22556 KB Output is correct
42 Correct 46 ms 8592 KB Output is correct
43 Execution timed out 3060 ms 43828 KB Time limit exceeded
44 Halted 0 ms 0 KB -