Submission #131720

#	Time	Username	Problem	Language	Result	Execution time	Memory
131720		Mahmoud_Adel	Broken Device (JOI17_broken_device)	C++14	85 / 100	62 ms	3312 KiB

Anna

#include <bits/stdc++.h>
#include "Annalib.h"
typedef long long ll;
using namespace std;
int mark[151];
ll power(ll x, ll y)
{
	if(y == 0) return 1;
	ll ret = 1;
	while(y--) ret *= x;
	return ret;
}
void Anna(int n, long long x, int k, int p[] )
{
	srand(3214354);
	vector<int> v;
	for(int i=0; i<150; i++) v.push_back(i);
	random_shuffle(v.begin(), v.end());
	ll temp = x, cnt = 0;
	memset(mark, 0, sizeof mark);
	for(int i=0; i<k; i++) mark[p[i]] = 1;
	ll a[38];
	for(ll i=37; i>=0; i--)
	{
		if(temp >= power(3, i)*2) temp -= power(3, i)*2, a[i] = 2;
		else if(temp >= power(3, i)) temp -= power(3, i), a[i] = 1;
		else a[i] = 0;
	}
	for(int i=0; i<n; i+=2)
	{
		if(mark[v[i]] || mark[v[i+1]] || cnt > 37) Set(v[i], 0), Set(v[i+1], 0);
		else
		{
			if(a[cnt] == 2) Set(v[i], 1), Set(v[i+1], 1);
			else if(a[cnt] == 1) Set(v[i], 1), Set(v[i+1], 0);
			else Set(v[i], 0), Set(v[i+1], 1);
			cnt++;
		}
	}
}

Bruno

#include "Brunolib.h"
#include <bits/stdc++.h>
//~ #include "Anna.cpp"
//~ #include "grader.cpp"
typedef long long ll;
using namespace std;
ll power(ll x, ll y)
{
	if(y == 0) return 1;
	ll ret = 1;
	while(y--) ret *= x;
	return ret;
}
long long Bruno(int n, int a[] )
{
	srand(3214354);
	vector<int> v;
	for(int i=0; i<150; i++) v.push_back(i);
	random_shuffle(v.begin(), v.end());
	ll cnt = 0;
	ll x = 0;
	for(int i=0; i<n; i+=2)
	{
		if(!a[v[i]] && !a[v[i+1]]) continue;
		int b;
		if(a[v[i]] == 1 && a[v[i+1]] == 1) b = 2;
		else if(a[v[i]] == 1) b = 1;
		else b = 0;
		x += b*power(3, cnt++);
	}
	return x;
}

• Subtask 1: 85 / 100