Submission #1022229

#	Time	Username	Problem	Language	Result	Execution time	Memory
1022229		codefox	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++14	0 / 100	7071 ms	344 KiB

encoder

#pragma GCC target("popcnt")   
#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>

int encode(int n, int a, int b)
    {
      int ca = __builtin_popcount(a);
      int cb = __builtin_popcount(b);
      ca--;
      cb--;
      for (int j = 0; j < 3; j++)
      {
        if ((cb&(1<<j)) && ((a==b)||((ca&(1<<j))==0)))
        {
          return j+1;
        }
      }
      for (int j = 0; j < 10; j++)
      {
        if (((b&(1<<j))==0) && ((a==b)||((a&(1<<j)))))
        {
          return j+4;
        }
      }
    }

decoder

#pragma GCC optimize("popcnt")
#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>

int decode(int n, int q, int h) 
    {
      	int cq = __builtin_popcount(q);
        cq--;
        h--;
        if (h < 3)
        {
           	if (cq&(1<<h)) return false;
            else return true;
        }
        else if (q &(1<<(h-3))) return true;
        else return false;
    }

Compilation message (stderr)

encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:25:5: warning: control reaches end of non-void function [-Wreturn-type]
   25 |     }
      |     ^

decoder.cpp:1:30: warning: bad option '-fpopcnt' to pragma 'optimize' [-Wpragmas]
    1 | #pragma GCC optimize("popcnt")
      |                              ^
decoder.cpp:5:31: warning: bad option '-fpopcnt' to attribute 'optimize' [-Wattributes]
    5 | int decode(int n, int q, int h)
      |                               ^

• Subtask 1: 0 / 100