Submission #164475

#	Time	Username	Problem	Language	Result	Execution time	Memory
164475		mhy908	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++14	Compilation error	0 ms	0 KiB

encoder

int c[930], r;
bool first=true;
int encode(int N, int x, int y)
{
    if(first)
        for(int i=1; i<=4096; i++)
            if(__builtin_popcount(i)==6)change[++r]=i;
    first=false;
    return __builtin_ffs(c[x]&(c[x]^c[y]));
}

decoder

int c[930], r;
bool first=true;
int encode(int N, int q, int h)
{
    if(first)
        for(int i=1; i<=4096; i++)
            if(__builtin_popcount(i)==6)c[++r]=i;
    first=false;
    return c[q]&(1<<(h-1))?1:0;
}

Compilation message (stderr)

encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:7:41: error: 'change' was not declared in this scope
             if(__builtin_popcount(i)==6)change[++r]=i;
                                         ^~~~~~
encoder.cpp:7:41: note: suggested alternative: 'char'
             if(__builtin_popcount(i)==6)change[++r]=i;
                                         ^~~~~~
                                         char

/tmp/ccP5F8dW.o: In function `main':
grader_decode.c:(.text.startup+0x19f): undefined reference to `decode(int, int, int)'
collect2: error: ld returned 1 exit status