Submission #722985

#TimeUsernameProblemLanguageResultExecution timeMemory
722985The_SamuraiFlight to the Ford (BOI22_communication)C++17
0 / 100
666 ms200 KiB
#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 i = 0; i < 31; i++) { for (int j = 1; 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; } } } // 01 -> 10 -> // 10 -> 01 -> // 11 -> 00 -> std::pair<int, int> decode(int N) { for (int i = 0; i < 31; i++) { for (int j = 1; j < 4; j++) { int now = 0; now += receive(); now += receive() * 2; now ^= j; if (j == 1) { if (now == 3) return {2, 3}; if (now == 0) return {1, 3}; if (now == 1) return {2, 3}; } else if (j == 2) { if (now == 0) return {2, 3}; if (now == 3) return {1, 3}; if (now == 2) return {2, 3}; } else { if (now == 1) return {2, 3}; if (now == 2) return {1, 3}; if (now == 3) return {2, 3}; } } } }

Compilation message (stderr)

communication.cpp: In function 'std::pair<int, int> decode(int)':
communication.cpp:54:1: warning: control reaches end of non-void function [-Wreturn-type]
   54 | }
      | ^
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