// Testcase for Issue 60
// https://github.com/kelloggm/checker-framework/issues/60

import org.checkerframework.checker.index.qual.IndexFor;

public class Issue60 {

  public static int[] fn_compose(@IndexFor("#2") int[] a, int[] b) {
    int[] result = new int[a.length];
    for (int i = 0; i < a.length; i++) {
      int inner = a[i];
      if (inner == -1) {
        result[i] = -1;
      } else {
        result[i] = b[inner];
      }
    }
    return result;
  }
}