Submission #490092

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
490092	2021-11-25 14:12:55	rainboy	Svjetlost (COI18_svjetlost)	C++17	100 / 100	545 ms	31100 KiB

Main

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <math.h>
#include <stdio.h>
#define N 100000
#define M (N * 8)
#define N_  (1 << 21) /* N_ = pow2(ceil(log2(M * 2))) */
double max(double a, double b) { return a > b ? a : b; }
unsigned int X = 12345;
int rand_() {
  return (X *= 3) >> 1;
}
int xx[N], yy[N], n;
long long cross(int x1, int y1, int x2, int y2) {
  return (long long) x1 * y2 - (long long) x2 * y1;
}
int xx_[M * 2], yy_[M * 2], hh[M * 2], ii[M * 2], m;
void add(int i, int j) {
  int h = m++;
  xx_[h << 1 | 0] = xx[i] - xx[j], yy_[h << 1 | 0] = yy[i] - yy[j];
  xx_[h << 1 | 1] = xx[j] - xx[i], yy_[h << 1 | 1] = yy[j] - yy[i];
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

svjetlost.cpp: In function 'int compare(int, int)':
svjetlost.cpp:35:37: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   35 |  sgn1 = xx_[h1] < 0 || xx_[h1] == 0 && yy_[h1] < 0 ? -1 : 1;
      |                        ~~~~~~~~~~~~~^~~~~~~~~~~~~~
svjetlost.cpp:36:37: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   36 |  sgn2 = xx_[h2] < 0 || xx_[h2] == 0 && yy_[h2] < 0 ? -1 : 1;
      |                        ~~~~~~~~~~~~~^~~~~~~~~~~~~~
svjetlost.cpp: In function 'int main()':
svjetlost.cpp:115:18: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
  115 |  while ((n_ & n_ - 1) != 0)
      |               ~~~^~~
svjetlost.cpp:94:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
svjetlost.cpp:96:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   96 |   scanf("%d%d", &xx[i], &yy[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
svjetlost.cpp:101:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  101 |  scanf("%d", &q);
      |  ~~~~~^~~~~~~~~~
svjetlost.cpp:105:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |   scanf("%d", &i), i--;
      |   ~~~~~^~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 29 / 29
• Subtask 5: 31 / 31