Submission #131705

#	Time	Username	Problem	Language	Result	Execution time	Memory
131705		Osama_Alkhodairy	Broken Device (JOI17_broken_device)	C++17	85 / 100	57 ms	3312 KiB

Anna

#include <bits/stdc++.h>
//~ #include "grader.cpp"
//~ #include "Bruno.cpp"
#include "Annalib.h"
using namespace std;
 
void Anna( int N, long long X, int K, int P[] ){
    srand(1000000007);
    vector <int> all;
    for(int i = 0 ; i < N ; i++){
        all.push_back(i);
    }
    random_shuffle(all.begin(), all.end());
    vector <int> broken(N);
    for(int i = 0 ; i < K ; i++){
        broken[P[i]] = 1;
    }
    for(int i = 0 ; i < N ; i += 2){
        if(broken[all[i]] == 1) broken[all[i + 1]] = 1;
        if(broken[all[i + 1]] == 1) broken[all[i]] = 1;
    }
    for(int i = 0 ; i < N ; i += 2){
        if(broken[all[i]]){
            Set(all[i], 0);
            Set(all[i + 1], 0);
            continue;
        }
        int cur = X % 3;
        X /= 3;
        if(cur == 0){
            Set(all[i], 0);
            Set(all[i + 1], 1);
        }
        else if(cur == 1){
            Set(all[i], 1);
            Set(all[i + 1], 0);
        }
        else{
            Set(all[i], 1);
            Set(all[i + 1], 1);
        }
    }
}

Bruno

#include <bits/stdc++.h>
#include "Brunolib.h"
using namespace std;
#define ll long long

long long Bruno( int N, int A[] ){
    srand(1000000007);
    vector <int> all;
    for(int i = 0 ; i < N ; i++){
        all.push_back(i);
    }
    random_shuffle(all.begin(), all.end());
    vector <int> r;
    for(int i = 0 ; i < N ; i += 2){
        if(A[all[i]] == 0 && A[all[i + 1]] == 1) r.push_back(0);
        else if(A[all[i]] == 1 && A[all[i + 1]] == 0) r.push_back(1);
        else if(A[all[i]] == 1 && A[all[i + 1]] == 1) r.push_back(2);
    }
    reverse(r.begin(), r.end());
    ll ret = 0;
    for(auto &i : r) ret = ret * 3 + i;
    return ret;
}

• Subtask 1: 85 / 100