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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. struct HideSite {
  5.     int x, y;
  6.     double distanceToTarget;
  7. };
  8.  
  9. int main() {
  10.     int err, n, Tx, Ty;
  11.     scanf("%d", &err);
  12.     scanf("%d", &n);
  13.     scanf("%d %d", &Tx, &Ty);
  14.  
  15.     struct HideSite hideSites[n];
  16.  
  17.     int headWidth = 15;
  18.     int shoulderWidth = 35;
  19.     for (int i = 0; i < n; ++i) {
  20.         scanf("%d %d", &hideSites[i].x, &hideSites[i].y);
  21.         hideSites[i].distanceToTarget = sqrt(pow((hideSites[i].x - Tx) - headWidth, 2) + pow((hideSites[i].y - Ty) - shoulderWidth, 2));
  22.     }
  23.  
  24.     int headIndex = -1;
  25.     int torsoIndex1 = -1;
  26.     int torsoIndex2 = -1;
  27.     for (int i = 0; i < n; ++i) {
  28.         if (hideSites[i].distanceToTarget <= err) {
  29.             headIndex = i;
  30.             break;
  31.         } else if (torsoIndex1 == -1) {
  32.             torsoIndex1 = i;
  33.         } else if (torsoIndex2 == -1) {
  34.             torsoIndex2 = i;
  35.             break;
  36.         }
  37.     }
  38.  
  39.     if (headIndex != -1) {
  40.         printf("%d\n", headIndex);
  41.     } else if (torsoIndex1 != -1 && torsoIndex2 != -1) {
  42.         if (hideSites[torsoIndex1].distanceToTarget < hideSites[torsoIndex2].distanceToTarget) {
  43.             printf("%d %d\n", torsoIndex1, torsoIndex2);
  44.         } else {
  45.             printf("%d %d\n", torsoIndex2, torsoIndex1);
  46.         }
  47.     } else {
  48.         printf("abort\n");
  49.     }
  50.  
  51.     return 0;
  52. }
Success #stdin #stdout 0s 5408KB
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https://ideone.com/51tdok
language:
C (gcc 8.3)
created:
2 years ago
visibility:
public

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