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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main() {
  5.     int err, n, Tx, Ty, min_head_index = -1, min_torso_index1 = -1, min_torso_index2 = -1;
  6.     scanf("%d", &err);
  7.     scanf("%d", &n);
  8.     scanf("%d %d", &Tx, &Ty);
  9.  
  10.     double min_head_distance = 2000000; // Initialize to a large value
  11.     double min_torso_distance = 2000000;
  12.  
  13.     for(int i = 0; i < n; ++i) {
  14.         int xi, yi;
  15.         scanf("%d %d", &xi, &yi);
  16.  
  17.         double distance = sqrt(pow(xi - Tx, 2) + pow(yi - Ty, 2));
  18.  
  19.         if (distance < err) {
  20.             printf("%d\n", i);
  21.             return 0;
  22.         }
  23.  
  24.         // Calculate the width of the torso target in mils
  25.         double torso_width = atan(17.5 / distance) * 1000; // atan returns result in radians
  26.  
  27.         if (torso_width < err && distance < min_torso_distance) {
  28.             min_torso_distance = distance;
  29.             min_torso_index1 = i;
  30.         } else if (torso_width < err && distance >= min_torso_distance && distance < min_head_distance) {
  31.             min_head_distance = distance;
  32.             min_head_index = i;
  33.         }
  34.     }
  35.  
  36.     if (min_torso_index1 != -1 && min_torso_index2 != -1) {
  37.         printf("%d %d\n", min_torso_index1, min_torso_index2);
  38.     } else if (min_head_index != -1) {
  39.         printf("%d\n", min_head_index);
  40.     }
  41.  
  42.     return 0;
  43. }
  44.  
Success #stdin #stdout 0s 5392KB
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https://ideone.com/uBwtUy
language:
C (gcc 8.3)
created:
2 years ago
visibility:
public

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