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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main() {
  5.     int err, n, Tx, Ty;
  6.     scanf("%d", &err);
  7.     scanf("%d", &n);
  8.     scanf("%d %d", &Tx, &Ty);
  9.  
  10.     int closestHeadIndex = -1;
  11.     int closestTorsoIndex1 = -1;
  12.     int closestTorsoIndex2 = -1;
  13.     double minHeadDistance = 2000; // maximum possible distance
  14.     double minTorsoDistance1 = 2000;
  15.     double minTorsoDistance2 = 2000;
  16.  
  17.     for (int i = 0; i < n; ++i) {
  18.         int x, y;
  19.         scanf("%d %d", &x, &y);
  20.  
  21.         double distance = sqrt(pow(x - Tx, 2) + pow(y - Ty, 2));
  22.         double error = distance * 1000; // convert distance to milliradians
  23.  
  24.         if (error <= err && y >= Ty) {
  25.             // hit in head
  26.             if (distance < minHeadDistance) {
  27.                 minHeadDistance = distance;
  28.                 closestHeadIndex = i;
  29.             }
  30.         } else if (error <= err * 2 && y >= Ty) {
  31.             // hit in torso
  32.             if (distance < minTorsoDistance1) {
  33.                 minTorsoDistance2 = minTorsoDistance1;
  34.                 closestTorsoIndex2 = closestTorsoIndex1;
  35.  
  36.                 minTorsoDistance1 = distance;
  37.                 closestTorsoIndex1 = i;
  38.             } else if (distance < minTorsoDistance2) {
  39.                 minTorsoDistance2 = distance;
  40.                 closestTorsoIndex2 = i;
  41.             }
  42.         }
  43.     }
  44.  
  45.     if (closestHeadIndex != -1) {
  46.         // Found a hide site to hit in head
  47.         printf("%d\n", closestHeadIndex);
  48.     } else if (closestTorsoIndex1 != -1 && closestTorsoIndex2 != -1) {
  49.         // Found two hide sites to hit in torso
  50.         printf("%d %d\n", closestTorsoIndex1, closestTorsoIndex2);
  51.     } else {
  52.         // No suitable hide sites found
  53.         printf("abort\n");
  54.     }
  55.  
  56.     return 0;
  57. }
  58.  
Success #stdin #stdout 0s 5476KB
comments (?)
stdin 
20
3
0 0
-500 1500
1000 200
3000 1000
stdout 
abort
https://ideone.com/joyjta
language:
C (gcc 8.3)
created:
2 years ago
visibility:
public

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