oj.uz

Submission #890956

# Submission time Handle Problem Language Result Execution time Memory
890956 2023-12-22T05:36:02 Z Muhammad_Aneeq Pairs (IOI07_pairs) C++17
57 / 100
 4000 ms 28560 KB 
/*
بسم الله الرحمن الرحيم
Author:
                          (:Muhammad Aneeq:)
*/
#include <iostream>
#include <map>
#include <set>
#include <vector>
#include <algorithm>
using namespace std;
#define int long long
inline int dis(vector<int>&a,vector<int>&b)
{
  int z=0;
  for (int j=0;j<b.size();j++)
    z+=abs(a[j]-b[j]);
  return z;
}
inline void solve()
{
  long long B,N,D,M;
  cin>>B>>N>>D>>M;
  int a[N][B];
  vector<int>mi(B,1e9+10),ma(B,0);
  map<vector<int>,int>d;
  for (int i=0;i<N;i++)
  {
    for (int j=0;j<B;j++)
      cin>>a[i][j];
    for (int j=0;j<B;j++)
    {
      mi[j]=min(mi[j],a[i][j]);
      ma[j]=max(ma[j],a[i][j]);
    }
  }
  if (dis(mi,ma)<=D)
  {
    cout<<(N*(N-1))/2<<endl;
    return;
  }
  if (B==1)
  {
    vector<int>z;
    for (int i=0;i<N;i++)
      z.push_back(a[i][0]);
    sort(begin(z),end(z));
    int ans=0;
    for (int i=0;i<N;i++)
    {
      int x=upper_bound(begin(z),end(z),z[i]+D)-begin(z);
      ans+=x-i-1;
    }
    cout<<ans<<endl;return;
  }
  int g=1;
  for (int i=0;i<B;i++)
    g*=D;
  int ans=0;
  set<vector<int>>s;
  for (int i=0;i<N;i++)
  {
    vector<int>g;
    for (int j=0;j<B;j++)
      g.push_back(a[i][j]);
    d[g]++;
    s.insert(g);
  }
  vector<vector<int>>z={begin(s),end(s)};
  int y=z.size();
  if ((long double)(y*(y-1)/2)>(long double)(4*g*y)&&B==2)
  {
    for (int i=0;i<y;i++)
    {
      for (int j=max(mi[0],z[i][0]-D);j<=min(ma[0],z[i][0]+D);j++)
      {
        for (int k=max(mi[1],z[i][1]-(D-abs(z[i][0]-j)));k<=min(ma[1],z[i][1]+(D-abs(z[i][0]-j)));k++)
        {
          if (d.find({j,k})==d.end())
            continue;
          vector<int>y={j,k};
          int di=dis(z[i],y);
          if (di<=D)
          {
            if (j==z[i][0]&&k==z[i][1])
              ans+=d[z[i]]*(d[z[i]]-1);
            else
              ans+=d[z[i]]*d[y];
          }
        }
      }
    }
    cout<<ans/2<<endl;
    return;
  }
  for (int i=0;i<z.size();i++)
  {
    int g=d[z[i]];
    ans+=(g*(g-1))/2;
    for (int j=i+1;j<z.size();j++)
    {
      int di=dis(z[i],z[j]);
      if (di<=D)
        ans+=d[z[i]]*d[z[j]];
    }
  }
  cout<<ans<<endl;
}
signed main()
{
  ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
        solve();
}

Compilation message

pairs.cpp: In function 'long long int dis(std::vector<long long int>&, std::vector<long long int>&)':
pairs.cpp:16:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |   for (int j=0;j<b.size();j++)
      |                ~^~~~~~~~~
pairs.cpp: In function 'void solve()':
pairs.cpp:96:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |   for (int i=0;i<z.size();i++)
      |                ~^~~~~~~~~
pairs.cpp:100:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  100 |     for (int j=i+1;j<z.size();j++)
      |                    ~^~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2264 KB Output is correct
2 Correct 17 ms 2268 KB Output is correct

Subtask #4
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 2264 KB Output is correct
2 Correct 18 ms 2268 KB Output is correct

Subtask #5
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2268 KB Output is correct
2 Correct 18 ms 2376 KB Output is correct
3 Correct 16 ms 2268 KB Output is correct

Subtask #6
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 604 KB Output is correct
2 Correct 6 ms 724 KB Output is correct

Subtask #7
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 181 ms 4540 KB Output is correct
2 Execution timed out 4067 ms 4436 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4035 ms 27580 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4016 ms 27704 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 604 KB Output is correct
2 Correct 54 ms 604 KB Output is correct

Subtask #11
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 2904 KB Output is correct
2 Correct 77 ms 2976 KB Output is correct
3 Correct 95 ms 2792 KB Output is correct

Subtask #12
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4085 ms 23376 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #13
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4019 ms 28560 KB Time limit exceeded
2 Halted 0 ms 0 KB -