Submission #1078413

#	Time	Username	Problem	Language	Result	Execution time	Memory
1078413		anton	Broken Device (JOI17_broken_device)	C++17	0 / 100	27 ms	2764 KiB

Anna

#include "Annalib.h"
#include<bits/stdc++.h>

using namespace std;
#define ll long long 

int N;
ll X;

void Anna( int _N, long long _X, int K, int P[] ){
  N = _N;
  X = _X;
  vector<int> info_bits;
  while(X>0){
    info_bits.push_back(X%2LL);
    X/=2LL;
  }

  /*for(auto e: info_bits){
    cout<<e<<" ";
  }
  cout<<endl;*/

  vector<bool> broken(N, false);
  for(int i = 0; i<K; i++){
    broken[P[i]] = true;
  }
  

  vector<int> res(N);
  auto mySet = [&](int pos, int val){
    if(pos<N){
      res[pos] = val;
    }
  };
  int cur_id = 0;
  for(int i = 0; i<info_bits.size(); i++){
    while(broken[cur_id] || broken[cur_id+1]){
      cur_id++;
    }
    mySet(cur_id, 1);
    mySet(cur_id+1, info_bits[i]);
    cur_id+=2;
  }

  for(int i = 0; i<N; i++){
    Set(i, res[i]);
  }
}

Bruno

#include "Brunolib.h"
#include<bits/stdc++.h>

using namespace std;
#define ll long long 

long long Bruno( int N, int A[] ){
  vector<ll> bits;
  for(int i = 0; i<N; i++){
    if(A[i]>0){
      bits.push_back(A[i+1]);
      i++;
    }
  }
  ll res= 0;
 
  reverse(bits.begin(), bits.end());
  /*for(auto e: bits){
    cout<<e<<" ";
  }
  cout<<endl;*/
  for(ll i = 0; i<bits.size(); i++){
    res = res * 2LL + bits[i];
  }
  cout<<res<<endl;
  return res;

}

Compilation message (stderr)

Anna.cpp: In function 'void Anna(int, long long int, int, int*)':
Anna.cpp:37:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |   for(int i = 0; i<info_bits.size(); i++){
      |                  ~^~~~~~~~~~~~~~~~~

Bruno.cpp: In function 'long long int Bruno(int, int*)':
Bruno.cpp:22:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |   for(ll i = 0; i<bits.size(); i++){
      |                 ~^~~~~~~~~~~~

• Subtask 1: 0 / 100