Submission #584003

#	Time	Username	Problem	Language	Result	Execution time	Memory
584003		cheissmart	Flight to the Ford (BOI22_communication)	C++17	0 / 100	4 ms	348 KiB

communication

#include"communication.h"
#include <bits/stdc++.h>
#define IO_OP ios::sync_with_stdio(0), cin.tie(0)
#define F first
#define S second
#define V vector
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(), (v).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

const int INF = 1e9 + 7;

int aux[] = {0b0000, 0b1001, 0b0110};

void encode(int n, int x) {
    for(int i = 0; i < 4; i++)
        send(aux[x - 1] >> i & 1);
}

pi decode(int n) {
    int x = 0;
    for(int i = 0; i < 4; i++)
        x |= receive() << i;

    vi ans;
    for(int i = 0; i < 4; i++) {
        int y = x ^ (1 << i);
        for(int k = 0; k < 3; k++)
            if(y == aux[k])
                ans.PB(k + 1);
        for(int j = 0; j < i - 1; j++) {
            int z = y ^ (1 << j);
            for(int k = 0; k < 3; k++)
                if(z == aux[k])
                    ans.PB(k + 1);
        }
    }
    while(SZ(ans) < 2) ans.PB(1);
    return {ans[0], ans[1]};
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 85