Submission #871502

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
871502	2023-11-11T04:37:01 Z	Faisal_Saqib	ICC (CEOI16_icc)	C++17	Compilation error	0 ms	0 KB

icc

// #include "icc.h"
#include <iostream>
#include <set>
#include <vector>
using namespace std;
#define vll vector<int>
const int N=200;
int par[N];
int sz[N];
// bool adj[N][N];
// void setRoad(int x,int y)
// {

// }
// int query(int n,int m,int a[],int b[])
// {
//   for(int i=0;i<n;i++)
//   {
//     for(int j=0;j<m;j++)
//     {
//       if(adj[a[i]][b[j]])
//         return 1;
//     }
//   }
//   return 0;
// }
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_);
}
int check_edge1(vll& c,vll& d)
{
  vll a=modify(c),b=modify(d);
  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,sed;
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)
{
  a=modify(a);
  b=modify(b);
  fit=a;
  sed=b;
  int ind=fix_first(0,((int)a.size())-1);
  fit={fit[ind]};
  swap(sed,fit);
  ind=fix_first(0,((int)b.size())-1);
  fit={fit[ind]};
}
void run(int n)
{
  n_n_n=n;
  init(n);
  int q=n-1;
  while(q--)
  {
    // cout<<"New edge\n";
    // int x_,y_;
    // cin>>x_>>y_;
    // adj[x_][y_]=adj[y_][x_]=1;
    vll shif;
    shif.push_back(0);
    for(int i=1;i<=n;i++)
      if(par[i]==i)
        shif.push_back(i);
    int s=1;
    int e=shif.size();
    while(s+1<e)
    {
      int mid=(s+e)/2;
      vll big;
      for(int i=1;i<mid;i++)
        big.push_back(shif[i]);
      vll pk={shif[mid]};
      if(check_edge1(big,pk)){
        e=mid;
      }
      else
      {
        s=mid;
      }
    }
    // cout<<"Hello "<<e<<endl;
    // for(auto i:shif)
    // {
    //   cout<<i<<' ';
    // }
    // cout<<endl;
    vll pk={shif[e]};
    vll big;
    for(int j=1;j<e;j++)
      big.push_back(shif[j]);
    between(big,pk);
    join(fit[0],sed[0]);
    // cout<<"Edge is "<<fit[0]<<' '<<sed[0]<<endl;
    setRoad(fit[0],sed[0]);
    // break;
  }
}
// int main()
// {
//   int n;
//   cin>>n;
//   run(n);
// }

Compilation message

icc.cpp: In function 'int check_edge(std::vector<int>&, std::vector<int>&)':
icc.cpp:69:10: error: 'query' was not declared in this scope
   69 |   return query(n,m,a_,b_);
      |          ^~~~~
icc.cpp: In function 'int check_edge1(std::vector<int>&, std::vector<int>&)':
icc.cpp:82:10: error: 'query' was not declared in this scope
   82 |   return query(n,m,a_,b_);
      |          ^~~~~
icc.cpp: In function 'void run(int)':
icc.cpp:156:5: error: 'setRoad' was not declared in this scope
  156 |     setRoad(fit[0],sed[0]);
      |     ^~~~~~~