Submission #722998

#	Time	Username	Problem	Language	Result	Execution time	Memory
722998		The_Samurai	Flight to the Ford (BOI22_communication)	C++17	0 / 100	26 ms	200 KiB

communication

#include "bits/stdc++.h"
#include "communication.h"

using namespace std;

//
// --- Sample implementation for the task communication ---
//
// To compile this program with the sample grader, place:
//     communication.h communication_sample.cpp sample_grader.cpp
// in a single folder, then open the terminal in this directory (right-click onto an empty spot in the directory,
// left click on "Open in terminal") and enter e.g.:
//     g++ -std=c++17 communication_sample.cpp sample_grader.cpp
// in this folder. This will create a file a.out in the current directory which you can execute from the terminal
// as ./a.out
// See task statement or sample_grader.cpp for the input specification
//
void encode(int N, int X) {
    for (int j = 0; j < 4; j++) {
        X ^= j;
        vector<int> a(2);
        a[0] = X % 2;
        a[1] = (X / 2) % 2;
        send(a[0]);
        send(a[1]);
        X ^= j;
    }
    send(1);
}

// 01 -> 10 ->
// 10 -> 01 ->
// 11 -> 00 ->
std::pair<int, int> decode(int N) {
    for (int j = 0; j < 4; j++) {
        int now = 0;
        now += receive();
        now += receive() * 2;
        now ^= j;
        if (j == 0) {
            if (now == 2) return {2, 3};
            else if (now == 1) return {1, 3};
            else if (now == 0) return {1, 2};
        } else if (j == 1) {
            if (now == 3) return {2, 3};
            else if (now == 0) return {1, 3};
            else if (now == 1) return {1, 2};
        } else if (j == 2) {
            if (now == 0) return {2, 3};
            else if (now == 3) return {1, 3};
            else if (now == 2) return {1, 2};
        } else {
            if (now == 1) return {2, 3};
            else if (now == 2) return {1, 3};
            else if (now == 3) return {1, 2};
        }
    }
}
// sampleni ochirdinmi?

Compilation message (stderr)

communication.cpp: In function 'std::pair<int, int> decode(int)':
communication.cpp:58:1: warning: control reaches end of non-void function [-Wreturn-type]
   58 | }
      | ^

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