First one done

LargeIntegers.java

@@ -0,0 +1,19 @@
+import java.math.BigInteger;
+public class LargeIntegers {
+   public void oneOfThree( BigInteger a, BigInteger b, BigInteger c ){
+      BigInteger res;
+      BigInteger TWO = new BigInteger("2");
+      if (a.compareTo(b) == 0){
+         res = a.multiply(b).multiply(c);
+      }
+      else {
+         if (c.mod(TWO).compareTo(BigInteger.ZERO) == 0) {
+            res = a.min(b);
+         }
+         else {
+            res = a.max(b);
+         }
+      }
+      System.out.println("Output: " + res);
+   }
+}