Submission #169075

#	Time	Username	Problem	Language	Result	Execution time	Memory
169075		songc	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++14	0 / 100	224 ms	262148 KiB

encoder

#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
typedef long long LL;
vector<LL> V;

void f(int n, int k, LL d){
	if (n == 12 && k == 6) V.push_back(d);
	if (k < 6) f(n+1, k+1, d*2+1);
	f(n+1, k, d*2);
}

int encode(int n, int x, int y) {
	if (V.empty()) f(0, 0, 0);
	for (int i=1; i<=12; i++) if ((x&(1ll<<(i-1))) && !(y&(1ll<<(i-1)))) return i;
}

decoder

#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
typedef long long LL;
vector<LL> V;

void f(int n, int k, LL d){
	if (n == 12 && k == 6) V.push_back(d);
	if (k < 6) f(n+1, k+1, d*2+1);
	f(n+1, k, d*2);
}

int decode(int n, int q, int h) {
	if (V.empty()) f(0, 0, 0);
	if (V[q] & (1<<(h-1))) return 1;
	return 0;
}

Compilation message (stderr)

encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:16:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

• Subtask 1: 0 / 100