Submission #1099056

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099056		LIA	Flight to the Ford (BOI22_communication)	C++17	0 / 100	10 ms	372 KiB

communication

#include "communication.h"

using namespace std;

void encode(int N, int X) {
    int signals[5];
    int response[5];

    if (X == 1) {
        signals[0] = 0;
        signals[1] = 0;
        signals[2] = 0;
    } else if (X == 2) {
        signals[0] = 0;
        signals[1] = 1;
        signals[2] = 0;
    } else if (X == 3) {
        signals[0] = 1;
        signals[1] = 0;
        signals[2] = 0;
    }

    for (int i = 0; i < 3; ++i) {
        response[i] = send(signals[i]);
    }
}

pair<int, int> decode(int N) {
    int receivedSignals[3];

    for (int i = 0; i < 3; ++i) {
        receivedSignals[i] = receive();
    }

    if (receivedSignals[0] == 0 && receivedSignals[1] == 0) {
        return {1, 2};
    } else if (receivedSignals[0] == 0 && receivedSignals[1] == 1) {
        return {2, 3};
    } else if (receivedSignals[0] == 1 && receivedSignals[1] == 0) {
        return {3, 1};
    } else {
        return {1, 1};
    }
}

Compilation message (stderr)

communication.cpp: In function 'void encode(int, int)':
communication.cpp:7:9: warning: variable 'response' set but not used [-Wunused-but-set-variable]
    7 |     int response[5];
      |         ^~~~~~~~
communication.cpp:24:27: warning: 'signals[1]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   24 |         response[i] = send(signals[i]);
      |                       ~~~~^~~~~~~~~~~~
communication.cpp:24:27: warning: 'signals[0]' may be used uninitialized in this function [-Wmaybe-uninitialized]

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