Submission #343609

#	Time	Username	Problem	Language	Result	Execution time	Memory
343609		Kerim	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++17	0 / 100	320 ms	48000 KiB

encoder

static int arr[924],pos;//C(12,6)
int encode (int n, int a, int b) {
	for(int i=0,x,y;i<4096;i++){x=i;y=0;
		while(x>=1)
			y+=(x%2),x/=2;	
		if(y==6)arr[pos++]=i;
	}
	for(int i=0;i<12;i++)
		if((arr[a-1]>>i&1) and !(arr[b-1]>>i&1))
			return i+1;
}

decoder

static int arr[924],pos;
int decode (int n, int q, int h){
	for(int i=0,x,y;i<4096;i++){x=i;y=0;
		while(x>=1)
			y+=(x%2),x/=2;	
		if(y==6)arr[pos++]=i;
	}
	return (arr[q-1]>>(h-1)&1);
}

Compilation message (stderr)

encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:11:1: warning: control reaches end of non-void function [-Wreturn-type]
   11 | }
      | ^

• Subtask 1: 0 / 100