Submission #166670

#	Time	Username	Problem	Language	Result	Execution time	Memory
166670		Lawliet	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++14	100 / 100	1616 ms	114568 KiB

encoder

int mask[930];

bool preCalculate;

bool isActive(int v, int k) { return v & (1 << k); }

int encode (int n, int x, int y)
{
  if( !preCalculate )
  {
    int cnt = 1;

    for(int m = 0 ; cnt <= n ; m++)
      if( __builtin_popcount( m ) == 6 ) mask[ cnt++ ] = m;

      preCalculate = true;
  }

  x = mask[ x ];
  y = mask[ y ];

  for(int j = 0 ; j < 12 ; j++)
    if( isActive( x , j ) && !isActive( y , j ) ) return j + 1;
}

decoder

int mask[930];

bool preCalculate;

bool isActive(int v, int k) { return v & (1 << k); }

int decode (int n, int q, int h)
{
	h--;

	if( !preCalculate )
  {
    int cnt = 1;

    for(int m = 0 ; cnt <= n ; m++)
      if( __builtin_popcount( m ) == 6 ) mask[ cnt++ ] = m;

      preCalculate = true;
  }

	if( isActive( mask[ q ] , h ) ) return 1;
	return 0;
}

Compilation message (stderr)

encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:13:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int m = 0 ; cnt <= n ; m++)
     ^~~
encoder.cpp:16:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
       preCalculate = true;
       ^~~~~~~~~~~~
encoder.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

decoder.cpp: In function 'int decode(int, int, int)':
decoder.cpp:15:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int m = 0 ; cnt <= n ; m++)
     ^~~
decoder.cpp:18:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
       preCalculate = true;
       ^~~~~~~~~~~~

• Subtask 1: 100 / 100