Submission #578303

#	Time	Username	Problem	Language	Result	Execution time	Memory
578303		IvanJ	Flight to the Ford (BOI22_communication)	C++17	15 / 100	35 ms	1924 KiB

communication

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

#define pb push_back
#define x first
#define y second
#define all(a) (a).begin(), (a).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> ii;
//
// --- 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) {
    int r;
    if(X == 1) {
		send(1);
		send(0);
		send(0);
	}
	if(X == 2) {
		send(0);
		send(1);
		send(0);
	}
	if(X == 3) {
		r = send(0);
		if(r == 0) send(1);
		else send(0);
		send(1);
	}
}

ii decode(int N) {
    int a = receive();
    int b = receive();
    int c = receive();
    if(a == 0 && b == 0 && c == 0) return {1, 2};
    if(a == 0 && b == 0 && c == 1) return {1, 3};
    if(a == 0 && b == 1 && c == 0) return {2, 3};
    if(a == 0 && b == 1 && c == 1) return {2, 3};
    if(a == 1 && b == 0 && c == 0) return {1, 3};
    if(a == 1 && b == 0 && c == 1) return {1, 3};
    if(a == 1 && b == 1 && c == 0) return {1, 2};
    if(a == 1 && b == 1 && c == 1) return {2, 2};
}

Compilation message (stderr)

communication.cpp: In function 'ii decode(int)':
communication.cpp:57:1: warning: control reaches end of non-void function [-Wreturn-type]
   57 | }
      | ^

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