Submission #282139

#	Time	Username	Problem	Language	Result	Execution time	Memory
282139		thtsshz_bgwrswh	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++17	100 / 100	4318 ms	48072 KiB

encoder

#include<algorithm>
#include<string>
using namespace std;
static bool first=1;
static string s[925];
int encode(int n,int x,int y){
	if(first){
		first=0;
		for(int i=0;i<12;i++)
            s[1]+=(i<6)?"0":"1";
		for(int i=2;i<=920;i++){
			s[i]=s[i-1];
			next_permutation(s[i].begin(),s[i].end());
		}
	}
	for(int i=0;i<12;i++)
		if(s[x][i]=='1'&&s[y][i]=='0')
			return i+1;
    return -1;
}

decoder

#include<algorithm>
#include<string>
using namespace std;
static bool first=1;
static string s[925];
int decode(int n,int q,int h){
	if(first){
		first=0;
        for(int i=0;i<12;i++)
            s[1]+=(i<6)?"0":"1";
		for(int i=2;i<=920;i++){
			s[i]=s[i-1];
			next_permutation(s[i].begin(),s[i].end());
		}
	}
	return s[q][--h]=='1';
}

• Subtask 1: 100 / 100