Submission #334056

#	Time	Username	Problem	Language	Result	Execution time	Memory
334056		dolphingarlic	Broken Device (JOI17_broken_device)	C++14	51 / 100	51 ms	3096 KiB

Anna

#include "Annalib.h"

void Anna(int N, long long X, int K, int P[]) {
    bool broken[150];
    for (int i = 0; i < N; i++) broken[i] = false;
    for (int i = 0; i < K; i++) broken[P[i]] = true;

    for (int i = 0, j = 0; i < N; i += 3) {
        if (j > 60 || broken[i] || broken[i + 1] || broken[i + 2]) {
            Set(i, 0); Set(i + 1, 0); Set(i + 2, 0);
        } else {
            Set(i, 1);
            Set(i + 1, (X & (1ll << j)) >> j);
            Set(i + 2, (X & (1ll << j + 1)) >> j + 1);
            j += 2;
        }
    }
}

Bruno

#include "Brunolib.h"

long long Bruno(int N, int A[]) {
    long long ans = 0;
    for (int i = 0, j = 0; i < N && j <= 60; i += 3) {
        if (A[i]) {
            ans += A[i + 1] * (1ll << j) + A[i + 2] * (1ll << j + 1);
            j += 2;
        }
    }
    return ans;
}

Compilation message (stderr)

Anna.cpp: In function 'void Anna(int, long long int, int, int*)':
Anna.cpp:14:39: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   14 |             Set(i + 2, (X & (1ll << j + 1)) >> j + 1);
      |                                     ~~^~~
Anna.cpp:14:50: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   14 |             Set(i + 2, (X & (1ll << j + 1)) >> j + 1);
      |                                                ~~^~~

Bruno.cpp: In function 'long long int Bruno(int, int*)':
Bruno.cpp:7:65: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
    7 |             ans += A[i + 1] * (1ll << j) + A[i + 2] * (1ll << j + 1);
      |                                                               ~~^~~

• Subtask 1: 51 / 100