Submission #241542

#	Time	Username	Problem	Language	Result	Execution time	Memory
241542		osaaateiasavtnl	Broken Device (JOI17_broken_device)	C++14	0 / 100	66 ms	3312 KiB

Anna

#include "Annalib.h"
#include<bits/stdc++.h>
 
using namespace std;
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
 
void Anna( int N, long long X, int K, int P[] ){
    mt19937 rnd(2007);
    vector <int> c(N);
    for (int i = 0; i < N; ++i)
        c[i] = rnd()&1;

    vector <bool> used(N);
    for (int i = 0; i < K; ++i)
        used[P[i]] = 1;
    vector <int> can;
    for (int i = 0; i < N; ++i)
        if (!used[i])   
            can.app(i);
 
    int ptr = 0;
    vector <bool> ans(N);
    for (int bit = 0; bit < 60; ++bit) {
        int w = (X >> bit) & 1;
        while (ptr < can.size() && c[can[ptr]] != w) {
            ++ptr;
        }   
 
        if (ptr == can.size()) {
            for (int i = 0; i < N; ++i) 
                Set(i, 0);
            return;
        }   
 
        ans[can[ptr]] = 1;
        ++ptr;
    }   
    for (int i = 0; i < N; ++i) {
        Set(i, ans[i]);
    }   
}

Bruno

#include "Brunolib.h"
#include<bits/stdc++.h>
 
using namespace std;
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
 
long long Bruno( int N, int A[] ){
    mt19937 rnd(2007);
    vector <int> c(N);
    for (int i = 0; i < N; ++i)
        c[i] = rnd()&1;

    vector <int> pos;
    for (int i = 0; i < N; ++i)
        if (A[i])
            pos.app(i);
 
    long long ans = 0;
    for (int i = 0; i < pos.size(); ++i) {
        if (c[pos[i]]&1) {
            ans += 1ll << i;
        }   
    }       
    return ans;
}

Compilation message (stderr)

Anna.cpp: In function 'void Anna(int, long long int, int, int*)':
Anna.cpp:33:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while (ptr < can.size() && c[can[ptr]] != w) {
                ~~~~^~~~~~~~~~~~
Anna.cpp:37:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (ptr == can.size()) {
             ~~~~^~~~~~~~~~~~~

Bruno.cpp: In function 'long long int Bruno(int, int*)':
Bruno.cpp:27:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < pos.size(); ++i) {
                     ~~^~~~~~~~~~~~

• Subtask 1: 0 / 100