제출 #674345

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
674345	2022-12-23 18:13:02	rainboy	Minerals (JOI19_minerals)	C++17	100 / 100	71 ms	8260 KiB

minerals

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/* https://www.ioi-jp.org/camp/2019/2019-sp-tasks/day4/minerals-review.pdf */
#include "minerals.h"
#include <cstring>
 
const int N = 43000, L = 19;
 
int k;
 
int Query_(int i) {
  int k_ = Query(i + 1);
  if (k_ == k)
    return 0;
  k = k_;
  return 1;
}
 
int tt[N * 2], ii[2][N], ii_[1 << L], nn[2], aa[N], bb[N];
int aaa[L * 2 + 2][1 << L], nn_[L * 2 + 2], kk[1 << L];
 
void Solve(int n) {
  for (int i = 0; i < n * 2; i++) {
    tt[i] = !Query_(i);
    ii[tt[i]][nn[tt[i]]++] = i;
  }
  for (int a = 0; a < 1 << L; a++) {
    int k = 0, l_ = -1;
    for (int l = 0; l < L; l++)
      if ((a >> l & 1) != (l == 0 ? 0 : (a >> l - 1 & 1)))
        k++, l_ = l;
    int w = a == 0 ? 0 : k + l_ + 2;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

minerals.cpp: In function 'void Solve(int)':
minerals.cpp:28:46: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   28 |    if ((a >> l & 1) != (l == 0 ? 0 : (a >> l - 1 & 1)))
      |                                            ~~^~~
minerals.cpp:40:54: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   40 |    if ((aa[i] >> l & 1) != (l == 0 ? 0 : (aa[i] >> l - 1 & 1)))
      |                                                    ~~^~~
minerals.cpp:44:23: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   44 |    kk[aa[i] & (1 << l + 1) - 1]++;
      |                     ~~^~~
minerals.cpp:44:28: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   44 |    kk[aa[i] & (1 << l + 1) - 1]++;
      |               ~~~~~~~~~~~~~^~~
minerals.cpp:46:50: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   46 |    if (kk[bb[i]] == 0 || kk[bb[i] | 1 << l] != 0 && Query_(ii[1][i]))
      |                          ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~

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• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
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