Submission #101574

#	Time	Username	Problem	Language	Result	Execution time	Memory
101574		Utaha	Mechanical Doll (IOI18_doll)	C++14	0 / 100	2 ms	332 KiB

doll

/*input

*/
#include <bits/stdc++.h>
#include "doll.h"
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<double,double> pdd;
#define IOS ios_base::sync_with_stdio(0); cin.tie(0)
#define ALL(a) a.begin(),a.end()
#define SZ(a) ((int)a.size())
#define F first
#define S second
#define REP(i,n) for(int i=0;i<((int)n);i++)
#define pb push_back
#define MP(a,b) make_pair(a,b)
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#define GET_POS(c,x) (lower_bound(c.begin(),c.end(),x)-c.begin())
template<typename T1,typename T2>
ostream& operator<<(ostream& out,pair<T1,T2> P){
  out<<'('<<P.F<<','<<P.S<<')';
  return out;
}

//}}}
const ll maxn=1000005;
const ll maxlg=__lg(maxn)+2;
const ll INF64=8000000000000000000LL;
const int INF=0x3f3f3f3f;
const ll MOD=ll(1e9+7);
const double PI=acos(-1);
//const ll p=880301;
//const ll P=31;
int lg=1;
int revbit(int n){
  int ret=0;
  REP(i,lg) if(n&(1<<i)){
    ret^=(1<<(lg-1-i));
  }
  return ret;
}
int rev[maxn];
bool cmp(int i,int j){
  return rev[i]<rev[j];
}
vector<int> C,X,Y;
int pt=1;
int L[maxn],R[maxn];
vector<int> order;
vector<int> r;
int idx[maxn];
void create_circuit(int m,vector<int> a){
  if(SZ(a)==1){
    C.resize(m+1);
    REP(i,SZ(C)) C[i]=0;
    C[0]=a[0];
    C[a[0]]=0;
    answer(C,X,Y);
    return; 
  }
  a.pb(0);
  int n=SZ(a)-1;
  REP(i,m+1) C.pb(-1);
  int N=2;
  while(N<n+1){
    N<<=1;
    ++lg;
  }
  REP(i,n) order.pb(i);
  order.pb(N-1);
  REP(i,N) rev[i]=revbit(i);
  sort(ALL(order),cmp);
  r.resize(SZ(order));
  // for(int i:order) cout<<i<<' ';
  // cout<<endl;
  REP(i,SZ(order)) r[order[i]]=i;
  // cout<<"N:"<<N<<'\n';
  L[1]=0;R[1]=N;

  for(int i=1;i<N/2;i++){
    int mid=(L[i]+R[i])/2;
    L[i<<1]=L[i];R[i<<1]=mid;
    L[(i<<1)|1]=mid;R[(i<<1)|1]=R[i];
  }
  int pt=0;
  for(int i=1;i<N;i++){
    if(L[i]>=n&&R[i]!=N) continue;
    idx[i]=pt++;
  }
  X.resize(pt);
  Y.resize(pt);
  // cout<<r[N-1]<<' '<<a[n-1]<<'\n';
  for(int i=1;i<N;i++){
    if(L[i]>=n&&R[i]!=N) continue;
    if(L[i]==R[i]-2){
      if(L[i]<n) X[idx[i]]=a[r[L[i]]];
      else X[idx[i]]=-1;

      if(L[i]+1>=n&&R[i]!=N) Y[idx[i]]=-1;
      else if(L[i]+1==N-1){
        Y[idx[i]]=0;
      }
      else Y[idx[i]]=a[r[L[i]+1]];
      continue;
    }
    int mid=(L[i]+R[i])/2;
    X[idx[i]]=-1-idx[i<<1];
    if(R[i]!=N&&mid>=n) Y[idx[i]]=-1;
    else Y[idx[i]]=-1-idx[(i<<1)|1];
  }
  answer(C,X,Y);
  // REP(i,SZ(C)) cout<<C[i]<<" \n"[i==SZ(C)-1];
  // cout<<SZ(X)<<'\n';
  // REP(i,SZ(X)) cout<<-1-i<<' '<<X[i]<<' '<<Y[i]<<'\n';
}

// vector<int> meow;
// int main()
// {
//  int n,m;
//  cin>>m>>n;
//  meow.resize(n);
//  REP(i,n) cin>>meow[i];
//  create_circuit(m,meow);
//  return 0;
// }

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 18
• Subtask 6: 0 / 56