oj.uz

Submission #871492

# Submission time Handle Problem Language Result Execution time Memory
871492 2023-11-11T03:53:00 Z Faisal_Saqib ICC (CEOI16_icc) C++17
18 / 100
 246 ms 856 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,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)
{
  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]};
}
bool found_=0;
void solve(vll& big)
{
  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]);
  vll c=modify(a),d=modify(b);
  if(check_edge(c,d))
  {
    between(c,d);
    found_=1;
  }
  else
  {
    solve(b);
    if(!found_)
      solve(a);
  }
}
void run(int n)
{
  n_n_n=n;
  init(n);
  int q=n-1;
  while(q--)
  {
    vll big;
    for(int i=1;i<=n;i++)
      if(par[i]==i)
        big.push_back(i);
    found_=0;
    solve(big);
    join(fit[0],sed[0]);
    setRoad(fit[0],sed[0]);
  }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 604 KB Ok! 95 queries used.
2 Correct 5 ms 604 KB Ok! 122 queries used.

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 608 KB Ok! 987 queries used.
2 Correct 67 ms 844 KB Ok! 1397 queries used.
3 Correct 63 ms 620 KB Ok! 1424 queries used.

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 246 ms 620 KB Number of queries more than 4500 out of 2250
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 221 ms 856 KB Number of queries more than 4000 out of 2000
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 192 ms 856 KB Number of queries more than 3550 out of 1775
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 175 ms 604 KB Number of queries more than 3250 out of 1625
2 Halted 0 ms 0 KB -