Submission #823935

#	Time	Username	Problem	Language	Result	Execution time	Memory
823935		ttamx	Flight to the Ford (BOI22_communication)	C++17	0 / 100	1 ms	292 KiB

communication

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

using namespace std;

void encode(int N, int X){
    vector<int> val={0,0,6,9,15};
    for(int i=0;i<4;i++)send(val[X]>>i&1);
}

pair<int, int> decode(int N) {
    vector<vector<int>> vec(16);
    vector<int> val={0,0,6,9,15};
    vector<int> res;
    for(int i=0;i<16;i++){
        bool ok=true;
        for(int j=0;j<3;j++){
            ok&=(i>>j&3)!=3;
        }
        if(ok){
            res.emplace_back(i);
        }
    }
    int num=0;
    for(int i=0;i<4;i++)num|=receive()<<i;
    for(int i=1;i<=N;i++){
        for(auto x:res){
            vec[val[i]^x].emplace_back(i);
        }
    }
    return {vec[num][0],vec[num][1]};
}

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