Submission #651106

#	Time	Username	Problem	Language	Result	Execution time	Memory
651106		TimDee	Flight to the Ford (BOI22_communication)	C++17	0 / 100	687 ms	1756 KiB

communication

#include"communication.h"
#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
pair<int,int> decode(int n) {
    for (int i=0; i<100; ++i) {
        int f=receive();
        int s=receive();
        if (f==1 && s==1) continue;
        if (f==1 && s==0) return {1,3};
        if (f==0 && s==1) return {2,3};
        if (f==0 && s==0) return {1,2};
    }
    return {1+rng()&1,3};
}

void encode(int n, int x) {
    for (int i=0; i<100; ++i) {
        if (x&1) send(1); else send(0);
        if (x&2) send(1); else send(0);
    }
}

Compilation message (stderr)

communication.cpp: In function 'std::pair<int, int> decode(int)':
communication.cpp:14:14: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
   14 |     return {1+rng()&1,3};
      |             ~^~~~~~

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