Submission #1077443

#	Time	Username	Problem	Language	Result	Execution time	Memory
1077443		thelegendary08	Broken Device (JOI17_broken_device)	C++14	85 / 100	30 ms	2884 KiB

Anna

#include "Annalib.h"
#include<bits/stdc++.h>
#define f0r(i,n) for(int i = 0; i<n;i++)
#define pb push_back
#define vb vector<bool>
#define vi vector<int>
using namespace std;
void Anna( int n, long long x, int k, int p[] ){
	vector<bool>broken(n);
	f0r(i, k){
		broken[p[i]] = 1;
	}
	vb ret(n, 0);
	long long mult = 1;
	f0r(i,37)mult *= 3;
	vi v;
	while(x > 0){
		if(x >= mult * 2)v.pb(2);
		else if(x >= mult)v.pb(1);
		else v.pb(0);
		x -= mult * v[v.size() - 1];
		mult /= 3;
	}
	//cout<<v.size()<<'\n';
	//for(auto u : v)cout<<u<<' ';
	//cout<<'\n';
	
	int ptr = 0;
	f0r(i, 75){
		if(broken[i*2] || broken[i*2+1] || ptr==v.size()){
			ret[i*2] = 0;
			ret[i*2+1] = 0;
		}
		else if(v[ptr] == 0){
			ret[i*2] = 0;
			ret[i*2+1] = 1;
			ptr++;
		}
		else if(v[ptr] == 1){
			ret[i*2] = 1;
			ret[i*2+1] = 0;
			ptr++;
		}
		else {
			ret[i*2] = 1;
			ret[i*2+1] = 1;
			ptr++;
		}
	}
	f0r(i, n){
		Set(i, ret[i]);
	}
	
}

Bruno

#include "Brunolib.h"
#include<bits/stdc++.h>
#define f0r(i,n) for(int i = 0; i<n;i++)
#define pb push_back
#define vb vector<bool>
#define vi vector<int>
using namespace std;
long long Bruno( int n, int A[] ){
	//for(int i = 0; i<N;i++)cout<<A[i]<<' ';
	//cout<<'\n';
  	long long ret = 0;
  	
  	long long cur = 1;
  	f0r(i, 37)cur *= 3;
  	f0r(i, 75){
  		if(A[i*2]== 1 && A[i*2+1] == 0){
  			ret += cur;
  		}
  		else if(A[i*2] == 1 && A[i*2+1] == 1){
  			ret += cur * 2;
  		}
  		if(A[i*2] != 0 || A[i*2+1] != 0)cur/=3;
  	}
  	//cout<<ret;
  	return ret;
}

Compilation message (stderr)

Anna.cpp: In function 'void Anna(int, long long int, int, int*)':
Anna.cpp:30:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |   if(broken[i*2] || broken[i*2+1] || ptr==v.size()){
      |                                      ~~~^~~~~~~~~~

• Subtask 1: 85 / 100