Submission #666305

#	Time	Username	Problem	Language	Result	Execution time	Memory
666305		mychecksedad	Flight to the Ford (BOI22_communication)	C++17	0 / 100	37 ms	264 KiB

communication

#include"communication.h"
#include<bits/stdc++.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 < 2; ++j){
        for(int k = 0; k < 6; ++k){
            bool val = (1<<j)&X;
            send(val);
        }
    }
}
std::pair<int, int> decode(int N) {
    int a = 0, b = 0;
    for(int j = 0; j < 2; ++j){
        int x = 0, y = 0, val = 0;
        for(int k = 0; k < 3; ++k){
            bool b = receive();
            x += b;
            y += !b;
            val += (1<<k)*b;
        }
        bool ok = 0;
        if((val != 5 && val != 2)){
            if(x > y)
                a += (1<<j);
            ok = 1;
        }
        x = 0, y = 0;
        for(int k = 0; k < 3; ++k){
            bool b = receive();
            x += b;
            y += !b;
        }
        if(!ok && x > y) a += (1<<j);
    }
    return {a, a};
}

Compilation message (stderr)

communication.cpp: In function 'std::pair<int, int> decode(int)':
communication.cpp:25:16: warning: unused variable 'b' [-Wunused-variable]
   25 |     int a = 0, b = 0;
      |                ^

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