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Submission #871567

# Submission time Handle Problem Language Result Execution time Memory
871567 2023-11-11T05:59:43 Z Faisal_Saqib ICC (CEOI16_icc) C++17
0 / 100
 2 ms 604 KB 
#include "icc.h"
#include <iostream>
#include <vector>
using namespace std;
#define vll vector<int>
const int N=200;
int par[N];
int sz[N];
void init(int n)
{
    for(int i=1;i<=n;i++)
    {
        par[i]=i;
        sz[i]=1;
    }
}
int root(int x)
{
    return (par[x]==x?x:par[x]=root(par[x]));
}
void join(int x,int y)
{
    x=root(x);
    y=root(y);
    if(x!=y)
    {
        par[x]=y;
        sz[y]+=sz[x];
    }
}
int n_n_n;
vll modify(vll& a)
{
  vll b;
  for(auto i:a)
    for(int j=1;j<=n_n_n;j++)
      if(root(j)==i)
        b.push_back(j);
  return b;
}
int check_edge(vll& a,vll& b)
{
  int n=a.size();
  int m=b.size();
  int a_[n];
  for(int i=0;i<n;i++)
    a_[i]=a[i];
  int b_[m];
  for(int i=0;i<m;i++)
    b_[i]=b[i];
  return query(n,m,a_,b_);
}
vll fit={2},sed={2};
int fix_first(int l,int r)
{
  if(l==r)
    return l;
  int mid=(l+r)/2;
  vll cur;
  for(int i=l;i<=mid;i++)
    cur.push_back(fit[i]);
  if(check_edge(cur,sed))
    return fix_first(l,mid);
  else
    return fix_first(mid+1,r);
}
void between(vll& a,vll& b)
{
  fit=a;
  sed=b;
  int ind=fix_first(0,((int)a.size())-1);
  // cout<<"Hello "<<' '<<ind<<' '<<a[ind]<<endl;
  fit={fit[ind]};
  swap(sed,fit);
  ind=fix_first(0,((int)b.size())-1);
  // cout<<"Hello "<<' '<<ind<<' '<<b[ind]<<endl;
  fit={fit[ind]};
}
bool found_=0;
void solve(vll& big)
{
    if(big.size()==2)
    {
        found_=1;
        fit[0]=big[0];
        sed[0]=big[1];
        return;
    }
  if(big.size()==1)
  {
    return;
  }
  vll a,b;
  int n_=big.size();
  for(int i=0;i<(n_/2);i++)
    a.push_back(big[i]);
  for(int j=(n_/2);j<n_;j++)
    b.push_back(big[j]);
  // cout<<"First ";
  // for(auto i:a)
  // {
  //   cout<<i<<' ';
  // }
  // cout<<endl;
  // cout<<"Second ";
  // for(auto i:b)
  // {
  //   cout<<i<<' ';
  // }
  // cout<<endl;
  vll c=modify(a),d=modify(b);
  if(check_edge(c,d))
  {
    // cout<<"There is a edge between \n";
    // for(auto i:c)
    // {
    //   cout<<i<<' ';
    // }
    // cout<<endl;
    // for(auto i:d)
    // {
    //   cout<<i<<' ';
    // }
    // cout<<endl;
    between(c,d);
    found_=1;
  }
  else
  {
    solve(a);
    if(!found_)
      solve(b);
  }
}
void run(int n)
{
  n_n_n=n;
  init(n);
  int q=n-1;
  while(q--)
  {
    // cout<<"Add edge \n";
    // int x_,y_;
    // cin>>x_>>y_;
    // ka[x_][y_]=1;
    // ka[y_][x_]=1;
    vll big;
    for(int i=1;i<=n;i++)
      if(par[i]==i)
        big.push_back(i);
    // for(auto i:big)
    // {
    //   cout<<i<<' ';
    // }
    // cout<<endl;
    // cout<<"HEllo "<<check_edge(a,b)<<endl;;
    found_=0;
    solve(big);
    // cout<<"edge is "<<fit[0]<<' '<<sed[0]<<endl;
    join(fit[0],sed[0]);
    setRoad(fit[0],sed[0]);
    // break;
  }
}
// int main()
// {
//   int n;
//   cin>>n;  
//   run(n);
// }

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 604 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 604 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 604 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 600 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 604 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 604 KB Wrong road!
2 Halted 0 ms 0 KB -