Submission #126567

#	Time	Username	Problem	Language	Result	Execution time	Memory
126567		briansu	Broken Device (JOI17_broken_device)	C++14	65 / 100	44 ms	3320 KiB

Anna

#include "Annalib.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define REP(i, n) for(int i = 0;i < n;i ++)

static ll fg;
static vector<ll> try_one(int N, ll X, vector<ll> &v)
{
	X = X * 2 + 0;
	ll ct = 0;
  vector<ll> d(N, 0);
  REP(i, N)
  {
  	ll a = (X & 1) > 0;
  	if(ct == 61 || i >= N - 1)d[i] = 0;
  	else if(v[i] && (!a || v[i + 1]))d[i] = 1, d[i + 1] = a,i += 1, ct += 1, X >>= 1;
  	else d[i] = 0;
  }
  if(ct == 61)fg = 1;
  return d;
}
static vector<ll> try_two(int N, ll X, vector<ll> &v)
{
	X = X * 2 + 1;
	ll ct = 0;
  vector<ll> d(N, 0);
  REP(i, N)
  {
  	ll a = (X & 1) > 0;
  	ll b = (X & 2) > 0;
  	if(ct == 61 || i >= N - 2)d[i] = 0;
  	else if(ct == 0 && v[i] && (!a || v[i + 1]))d[i] = 1, d[i + 1] = a,i += 1, ct += 1, X >>= 1;
  	else if(ct != 0 && v[i] && (!a || v[i + 1]) && (!b || v[i + 2]))d[i] = 1, d[i + 1] = a, d[i + 2] = b, i += 2, ct += 2, X >>= 2;
  	else d[i] = 0;
  }
  if(ct == 61)fg = 1;
  return d;
}

void Anna( int N, long long X, int K, int P[] ){
  vector<ll> v(N, 1);
  REP(i, K)v[P[i]] = 0;
  vector<ll> d;
  fg = 0;
  d = try_one(N, X, v);
  if(!fg)d = try_two(N, X, v);
  REP(i, N)Set(i, d[i]);
}

Bruno

#include "Brunolib.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define REP(i, n) for(int i = 0;i < n;i ++)

long long Bruno( int N, int A[] ){
  ll n = N;
  ll tt = 0, t = 1, tp = -1;
  REP(i, n)
  {
  	if(A[i])
  	{
  		if(tp == -1)tp = A[i + 1], i ++;
  		else if(tp == 0)tt += t * A[i + 1], t <<= 1, i ++;
  		else tt += t * A[i + 1] + (t * 2) * A[i + 2], t <<= 2, i += 2;
  	}
  }
  return tt;
}

• Subtask 1: 65 / 100