Submission #164893

#	Time	Username	Problem	Language	Result	Execution time	Memory
164893		arnold518	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++14	100 / 100	1816 ms	112576 KiB

encoder

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

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

static vector<int> V;

int encode(int N, int X, int Y)
{
    int i, j;

    if(V.empty())
    {
        V.push_back(-1);
        for(i=0; i<(1<<12); i++) if(__builtin_popcount(i)==6) V.push_back(i);
    }
    X=V[X]; Y=V[Y];

    for(i=0; i<12; i++) if(X&(1<<i) && !(Y&(1<<i))) return i+1;
}

decoder

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

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

static vector<int> V;

int decode(int N, int Q, int H)
{
    int i, j; H--;

    if(V.empty())
    {
        V.push_back(-1);
        for(i=0; i<(1<<12); i++) if(__builtin_popcount(i)==6) V.push_back(i);
    }

    Q=V[Q];
    if(Q&(1<<H)) return 1;
    else return 0;
}

Compilation message (stderr)

encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:12:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
encoder.cpp:22:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

decoder.cpp: In function 'int decode(int, int, int)':
decoder.cpp:12:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j; H--;
            ^

• Subtask 1: 100 / 100