Submission #1098909

#	Time	Username	Problem	Language	Result	Execution time	Memory
1098909		not_amir	Flight to the Ford (BOI22_communication)	C++17	15 / 100	24 ms	3064 KiB

communication

#include <algorithm>

#include"communication.h"
//
// --- 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) {
    if(X == 1) {
        send(0);
        send(0);
        send(0);
        send(0);
    }
    if(X == 2) {
        send(1);
        send(1);
        send(1);
        send(1);
    }
    if(X == 3) {
        send(1);
        send(0);
        send(0);
        send(1);
    }
}

std::pair<int, int> decode(int N) {
    int curr0 = 0, curr1 = 0;
    int max0 = 0, max1 = 0;
    for(int i = 0; i < 4; i++) {
        if(receive()) {
            curr0 = 0;
            curr1++;
        }
        else {
            curr0++;
            curr1 = 0;
        }
        max0 = std::max(curr0, max0);
        max1 = std::max(curr1, max1);
    }
    if(max0 == 1 && max1 == 1)
        return {1, 2};
    if(max0 == 4)
        return {1, 3};
    if(max1 == 4)
        return {2, 3};
    if(max0 > 1)
        return {1, 3};
    if(max1 > 1)
        return {2, 3};
    if(max0 == 1)
        return {1, 3};
    if(max1 == 1)
        return {2, 3};
}

Compilation message (stderr)

communication.cpp: In function 'std::pair<int, int> decode(int)':
communication.cpp:66:1: warning: control reaches end of non-void function [-Wreturn-type]
   66 | }
      | ^

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