Submission #354405

#	Time	Username	Problem	Language	Result	Execution time	Memory
354405		rqi	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++14	0 / 100	1 ms	736 KiB

encoder

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef vector<int> vi;
typedef vector<pi> vpi;

#define pb push_back
#define f first
#define s second
#define mp make_pair
#define ins insert

#define sz(x) (int)(x).size()
#define all(x) begin(x), end(x)

const int maxh = 12;

vi genSub(int ind){
	vi sub;
	for(int i = 1; i <= maxh/2; i++){
		sub.pb(i);
	}

	for(int i = 0; i < ind; i++){
		next_permutation(all(sub));
	}

	return sub;
}

int encode (int n, int x, int y) {
	x--;
	y--;
	vi subx = genSub(x);
	vi suby = genSub(y);
	vector<bool> insub1(maxh+1, 0);
	vector<bool> insub2(maxh+1, 1);
	for(int k = 0; k < sz(subx); k++){
		insub1[subx[k]] = 1;
	}
	for(int k = 0; k < sz(suby); k++){
		insub2[suby[k]] = 0;
	}

	for(int h = 1; h <= maxh; h++){
		if(insub1[h] && insub2[h]){
			return h;
		}
	}
	return -1;
}

decoder

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef vector<int> vi;
typedef vector<pi> vpi;

#define pb push_back
#define f first
#define s second
#define mp make_pair
#define ins insert

#define sz(x) (int)(x).size()
#define all(x) begin(x), end(x)

const int maxh = 12;

vi genSub(int ind){
	vi sub;
	for(int i = 1; i <= maxh/2; i++){
		sub.pb(i);
	}

	for(int i = 0; i < ind; i++){
		next_permutation(all(sub));
	}
	return sub;
}


int decode (int n, int q, int h) {
	q--;
	vi subq = genSub(q);
	for(int i = 0; i < sz(subq); i++){
		if(subq[i] == h) return 1;
	}
	return 0;
}

• Subtask 1: 0 / 100