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Submission #195560

# Submission time Handle Problem Language Result Execution time Memory
195560 2020-01-16T08:28:55 Z theStaticMind Examination (JOI19_examination) C++14
100 / 100
 2223 ms 14748 KB 
#include<bits/stdc++.h>
#define pb push_back
#define ii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define INF 100000000000000000
#define modulo 1000000007
#define mod 998244353
//#define int long long int
using namespace std;

struct Person{
      int M,I,Z,ind;
      bool Q;
      Person(int m,int i,int z,int in){
            M=m;
            I=i;
            Z=z;
            ind=in;
      }
      bool operator<(const Person& A)const{
            return M<A.M||(M==A.M&&I<A.I);
      }
};
vector<Person>arr;
vector<Person>Q;
vector<int>no;
vector<vector<ii>> data;
int sq;
int sz;
bool sort_by_Z(int A,int B){
      return arr[A].Z<arr[B].Z;
}
bool Sort_by_Z(int A,int B){
      return Q[A].Z<Q[B].Z;
}
int query(vector<ii>& data,int x){
      int l=0,r=data.size()-1;
      int j=data.size();
      while(l<=r){
            int mid=(l+r)/2;
            if(data[mid].first<x)l=mid+1;
            else{
                  r=mid-1;
                  j=mid;
            }
      }
      if(j==data.size())return 0;
      return data[j].second;
}
void erase(vector<ii>& data,int x){
      int l=0,r=data.size()-1;
      int j=data.size();
      while(l<=r){
            int mid=(l+r)/2;
            if(data[mid].first<x)l=mid+1;
            else{
                  r=mid-1;
                  j=mid;
            }
      }
      assert(j!=data.size());
      for(;j>=0;j--){
            data[j].second--;
      }
}
int32_t main(){
      ios_base::sync_with_stdio(false);
      cin.tie(NULL);
//      freopen("q.in","r",stdin);
//      freopen("q.out","w",stdout);
      int n,q;
      cin>>n>>q;
      vector<int>Z;
      vector<int>ans(q,0);
      for(int i=0;i<n;i++){
            int a,b;
            cin>>a>>b;
            arr.pb(Person(a,b,a+b,i));
            Z.pb(i);
      }
      sort(all(arr));
      for(int i=0;i<n;i++)arr[i].ind=i;
      sort(all(Z),sort_by_Z);

      sq=sqrt(n);
      sz=n/sq+1;
      for(int i=0;i<n;i++){
            no.pb(i/sq);
      }
      data.resize(sz);
      for(int i=0;i<n;i++){
            data[no[i]].pb({arr[i].I,0});
      }
      for(int i=0;i<sz;i++){
            int cnt=1;
            sort(all(data[i]));
            for(int j=data[i].size()-1;j>=0;j--){
                  data[i][j].second=cnt++;
            }
      }

      vector<int>idq;
      for(int i=0;i<q;i++){
            int a,b,c;
            cin>>a>>b>>c;
            idq.pb(i);
            Q.pb(Person(a,b,c,i));
      }
      sort(all(idq),Sort_by_Z);
      int ptr=0;
      vector<bool>vis(n,false);
      for(int i=0;i<q;i++){
            while(ptr!=n&&arr[Z[ptr]].Z<Q[idq[i]].Z){
                  vis[Z[ptr]]=true;
                  erase(data[no[arr[Z[ptr]].ind]],arr[Z[ptr]].I);
                  ptr++;
            }
            int l=0,r=n-1;
            int j=n;
            while(l<=r){
                  int mid=(l+r)/2;
                  if(arr[mid].M<Q[idq[i]].M)l=mid+1;
                  else{
                        r=mid-1;
                        j=mid;
                  }
            }
            if(j==n)continue;
            while(j!=0&&j<n&&no[j]==no[j-1]){
                  if(vis[j]==false&&arr[j].I>=Q[idq[i]].I)
                  ans[idq[i]]++;
                  j++;
            }
            if(j==n)continue;
            for(int N=no[j];N<sz;N++){
                  ans[idq[i]]+=query(data[N],Q[idq[i]].I);
            }
      }
      for(int i=0;i<q;i++)cout<<ans[i]<<"\n";
}

Compilation message

examination.cpp: In function 'int query(std::vector<std::pair<int, int> >&, int)':
examination.cpp:47:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if(j==data.size())return 0;
          ~^~~~~~~~~~~~~
In file included from /usr/include/c++/7/cassert:44:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:33,
                 from examination.cpp:1:
examination.cpp: In function 'void erase(std::vector<std::pair<int, int> >&, int)':
examination.cpp:61:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       assert(j!=data.size());
              ~^~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 10 ms 892 KB Output is correct
8 Correct 10 ms 804 KB Output is correct
9 Correct 10 ms 812 KB Output is correct
10 Correct 8 ms 692 KB Output is correct
11 Correct 8 ms 760 KB Output is correct
12 Correct 6 ms 632 KB Output is correct
13 Correct 8 ms 760 KB Output is correct
14 Correct 7 ms 760 KB Output is correct
15 Correct 9 ms 760 KB Output is correct
16 Correct 6 ms 760 KB Output is correct
17 Correct 8 ms 676 KB Output is correct
18 Correct 5 ms 632 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1300 ms 12364 KB Output is correct
2 Correct 1273 ms 12544 KB Output is correct
3 Correct 1275 ms 12392 KB Output is correct
4 Correct 1204 ms 11656 KB Output is correct
5 Correct 592 ms 11620 KB Output is correct
6 Correct 563 ms 10952 KB Output is correct
7 Correct 2085 ms 12160 KB Output is correct
8 Correct 957 ms 12268 KB Output is correct
9 Correct 1550 ms 12172 KB Output is correct
10 Correct 513 ms 11480 KB Output is correct
11 Correct 566 ms 11456 KB Output is correct
12 Correct 270 ms 10504 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1300 ms 12364 KB Output is correct
2 Correct 1273 ms 12544 KB Output is correct
3 Correct 1275 ms 12392 KB Output is correct
4 Correct 1204 ms 11656 KB Output is correct
5 Correct 592 ms 11620 KB Output is correct
6 Correct 563 ms 10952 KB Output is correct
7 Correct 2085 ms 12160 KB Output is correct
8 Correct 957 ms 12268 KB Output is correct
9 Correct 1550 ms 12172 KB Output is correct
10 Correct 513 ms 11480 KB Output is correct
11 Correct 566 ms 11456 KB Output is correct
12 Correct 270 ms 10504 KB Output is correct
13 Correct 1324 ms 12800 KB Output is correct
14 Correct 1358 ms 12856 KB Output is correct
15 Correct 1303 ms 12372 KB Output is correct
16 Correct 1205 ms 12040 KB Output is correct
17 Correct 674 ms 12060 KB Output is correct
18 Correct 565 ms 10796 KB Output is correct
19 Correct 1350 ms 12808 KB Output is correct
20 Correct 1331 ms 12880 KB Output is correct
21 Correct 1735 ms 12908 KB Output is correct
22 Correct 490 ms 11528 KB Output is correct
23 Correct 583 ms 11504 KB Output is correct
24 Correct 274 ms 10456 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 10 ms 892 KB Output is correct
8 Correct 10 ms 804 KB Output is correct
9 Correct 10 ms 812 KB Output is correct
10 Correct 8 ms 692 KB Output is correct
11 Correct 8 ms 760 KB Output is correct
12 Correct 6 ms 632 KB Output is correct
13 Correct 8 ms 760 KB Output is correct
14 Correct 7 ms 760 KB Output is correct
15 Correct 9 ms 760 KB Output is correct
16 Correct 6 ms 760 KB Output is correct
17 Correct 8 ms 676 KB Output is correct
18 Correct 5 ms 632 KB Output is correct
19 Correct 1300 ms 12364 KB Output is correct
20 Correct 1273 ms 12544 KB Output is correct
21 Correct 1275 ms 12392 KB Output is correct
22 Correct 1204 ms 11656 KB Output is correct
23 Correct 592 ms 11620 KB Output is correct
24 Correct 563 ms 10952 KB Output is correct
25 Correct 2085 ms 12160 KB Output is correct
26 Correct 957 ms 12268 KB Output is correct
27 Correct 1550 ms 12172 KB Output is correct
28 Correct 513 ms 11480 KB Output is correct
29 Correct 566 ms 11456 KB Output is correct
30 Correct 270 ms 10504 KB Output is correct
31 Correct 1324 ms 12800 KB Output is correct
32 Correct 1358 ms 12856 KB Output is correct
33 Correct 1303 ms 12372 KB Output is correct
34 Correct 1205 ms 12040 KB Output is correct
35 Correct 674 ms 12060 KB Output is correct
36 Correct 565 ms 10796 KB Output is correct
37 Correct 1350 ms 12808 KB Output is correct
38 Correct 1331 ms 12880 KB Output is correct
39 Correct 1735 ms 12908 KB Output is correct
40 Correct 490 ms 11528 KB Output is correct
41 Correct 583 ms 11504 KB Output is correct
42 Correct 274 ms 10456 KB Output is correct
43 Correct 1401 ms 14724 KB Output is correct
44 Correct 1370 ms 14748 KB Output is correct
45 Correct 1347 ms 14700 KB Output is correct
46 Correct 1197 ms 13292 KB Output is correct
47 Correct 663 ms 13204 KB Output is correct
48 Correct 568 ms 10760 KB Output is correct
49 Correct 2223 ms 14600 KB Output is correct
50 Correct 1161 ms 14672 KB Output is correct
51 Correct 1762 ms 14708 KB Output is correct
52 Correct 566 ms 13064 KB Output is correct
53 Correct 562 ms 12264 KB Output is correct