Submission #545934

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
545934	2022-04-05 16:13:29	rainboy	Scissors and Tape (CEOI19_scissors)	C++98	100 / 100	2 ms	316 KiB

scissors

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/* https://codeforces.com/blog/entry/68748 */
#include <math.h>
#include <stdio.h>
#define N 10
double dot2(double x1, double y1, double x2, double y2) {
  return x1 * x2 + y1 * y2;
}
double cross2(double x1, double y1, double x2, double y2) {
  return x1 * y2 - x2 * y1;
}
double dot(double x0, double y0, double x1, double y1, double x2, double y2) {
  return dot2(x1 - x0, y1 - y0, x2 - x0, y2 - y0);
}
int *xx, *yy;
double cross(int i, int j, int k) {
  return cross2(xx[j] - xx[i], yy[j] - yy[i], xx[k] - xx[i], yy[k] - yy[i]);
}
int m;
int rect2rect(double x1, double y1, double x2, double y2, int h) {
  if (x1 == x2)
    return h;
  if (x1 * 2 <= x2) {
 
 
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Compilation message (stderr)

scissors.cpp: In function 'int main()':
scissors.cpp:266:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  266 |  scanf("%d", &n1);
      |  ~~~~~^~~~~~~~~~~
scissors.cpp:268:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  268 |   scanf("%d%d", &xx1[i], &yy1[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
scissors.cpp:269:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  269 |  scanf("%d", &n2);
      |  ~~~~~^~~~~~~~~~~
scissors.cpp:271:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  271 |   scanf("%d%d", &xx2[j], &yy2[j]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 13 / 13
• Subtask 3: 12 / 12
• Subtask 4: 14 / 14
• Subtask 5: 10 / 10
• Subtask 6: 16 / 16
• Subtask 7: 11 / 11
• Subtask 8: 19 / 19