Submission #471661

#	Time	Username	Problem	Language	Result	Execution time	Memory
471661		TheScrasse	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++14	100 / 100	4537 ms	24176 KiB

encoder

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

#define nl "\n"
#define nf endl
#define ll long long
#define pb push_back
#define _ << ' ' <<

#define INF (ll)1e18
#define mod 998244353
#define maxn 110

vector<ll> v;

int encode(int n, int x, int y) {
    ll i, mk;

    if (v.empty()) {
        v.pb(0);
        for (mk = 0; mk < (1 << 12); mk++) {
            if (__builtin_popcount(mk) != 6) continue;
            v.pb(mk);
        }
    }

    for (i = 0; i < 12; i++) {
        if (((v[x] >> i) & 1) == 0) continue;
        if (((v[y] >> i) & 1) == 1) continue;
        return i + 1;
    }
}

decoder

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

#define nl "\n"
#define nf endl
#define ll long long
#define pb push_back
#define _ << ' ' <<

#define INF (ll)1e18
#define mod 998244353
#define maxn 110

vector<ll> w;

int decode(int n, int q, int h) {
    ll i, mk;

    if (w.empty()) {
        w.pb(0);
        for (mk = 0; mk < (1 << 12); mk++) {
            if (__builtin_popcount(mk) != 6) continue;
            w.pb(mk);
        }
    }

	return ((w[q] >> (h - 1)) & 1);
}

Compilation message (stderr)

encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type]
   32 | }
      | ^

decoder.cpp: In function 'int decode(int, int, int)':
decoder.cpp:17:8: warning: unused variable 'i' [-Wunused-variable]
   17 |     ll i, mk;
      |        ^

• Subtask 1: 100 / 100