Submission #354402

#	Time	Username	Problem	Language	Result	Execution time	Memory
354402		rqi	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++14	0 / 100	7093 ms	4204 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;
vector<vi> subs;
vi sub;

void genSub(int curnum = 1){
	if(sz(sub) == maxh/2){
		subs.pb(sub);
		// for(auto u: sub){
		// 	cout << u << " ";
		// }
		// cout << "\n";
		return;
	}
	for(int i = curnum; i <= maxh; i++){
		sub.pb(i);
		genSub(i+1);
		sub.pop_back();
	}
}

int num[1005][1005];
bool pres[1005][maxh+1]; //is this number present in the row?
bool calculated = false;

void precalc(){
	if(calculated) return;
	calculated = true;
	genSub();

	for(int i = 0; i < sz(subs); i++){
		for(int j = 0; j < sz(subs); j++){
			if(i == j) continue;
			vector<bool> insub1(maxh+1, 0);
			vector<bool> insub2(maxh+1, 1);
			for(int k = 0; k < sz(subs[i]); k++){
				insub1[subs[i][k]] = 1;
			}
			for(int k = 0; k < sz(subs[j]); k++){
				insub2[subs[j][k]] = 0;
			}
			for(int h = 1; h <= maxh; h++){
				if(insub1[h] && insub2[h]){
					num[i][j] = h;
				}
			}
		}
	}

	// for(int i = 0; i < sz(subs); i++){
	// 	for(int j = 0; j < sz(subs); j++){
	// 		cout << num[i][j] << " ";
	// 	}
	// 	cout << "\n";
	// }

	for(int i = 0; i < sz(subs); i++){
		for(int j = 0; j < sz(subs); j++){
			pres[i][num[i][j]] = 1;
		}
	}
}

int encode (int n, int x, int y) {
	precalc();
	x--;
	y--;
	for(int i = 0; i < sz(subs); i++){
		for(int j = 0; j < sz(subs); j++){
			if(i == j) continue;
			vector<bool> insub1(maxh+1, 0);
			vector<bool> insub2(maxh+1, 1);
			for(int k = 0; k < sz(subs[i]); k++){
				insub1[subs[i][k]] = 1;
			}
			for(int k = 0; k < sz(subs[j]); k++){
				insub2[subs[j][k]] = 0;
			}
			for(int h = 1; h <= maxh; h++){
				if(insub1[h] && insub2[h]){
					num[i][j] = h;
				}
			}
		}
	}
  	return num[x][y];
}

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;
vector<vi> subs;
vi sub;

void genSub(int curnum = 1){
	if(sz(sub) == maxh/2){
		subs.pb(sub);
		// for(auto u: sub){
		// 	cout << u << " ";
		// }
		// cout << "\n";
		return;
	}
	for(int i = curnum; i <= maxh; i++){
		sub.pb(i);
		genSub(i+1);
		sub.pop_back();
	}
}

int num[1005][1005];
bool pres[1005][maxh+1]; //is this number present in the row?
bool calculated = false;

void precalc(){
	if(calculated) return;
	calculated = true;
	genSub();

	for(int i = 0; i < sz(subs); i++){
		for(int j = 0; j < sz(subs); j++){
			if(i == j) continue;
			vector<bool> insub1(maxh+1, 0);
			vector<bool> insub2(maxh+1, 1);
			for(int k = 0; k < sz(subs[i]); k++){
				insub1[subs[i][k]] = 1;
			}
			for(int k = 0; k < sz(subs[j]); k++){
				insub2[subs[j][k]] = 0;
			}
			for(int h = 1; h <= maxh; h++){
				if(insub1[h] && insub2[h]){
					num[i][j] = h;
				}
			}
		}
	}

	// for(int i = 0; i < sz(subs); i++){
	// 	for(int j = 0; j < sz(subs); j++){
	// 		cout << num[i][j] << " ";
	// 	}
	// 	cout << "\n";
	// }

	for(int i = 0; i < sz(subs); i++){
		for(int j = 0; j < sz(subs); j++){
			pres[i][num[i][j]] = 1;
		}
	}
}

int decode (int n, int q, int h) {
	precalc();
	q--;
	if(pres[q][h]){
		return 1;
	}
	return 0;
}

• Subtask 1: 0 / 100