Compile Error. ----------
1. ERROR in /home/stefan/.javax/1513273258546/main.java (at line 158)
	String a = l.get(i), b = l.get(i+1), c = l.get(i+2);
	           ^^^^^^^^
Type mismatch: cannot convert from BigInteger to String
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2. ERROR in /home/stefan/.javax/1513273258546/main.java (at line 158)
	String a = l.get(i), b = l.get(i+1), c = l.get(i+2);
	                         ^^^^^^^^^^
Type mismatch: cannot convert from BigInteger to String
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3. ERROR in /home/stefan/.javax/1513273258546/main.java (at line 158)
	String a = l.get(i), b = l.get(i+1), c = l.get(i+2);
	                                         ^^^^^^^^^^
Type mismatch: cannot convert from BigInteger to String
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4. ERROR in /home/stefan/.javax/1513273258546/main.java (at line 159)
	if (eq(plus(a, 1), b) && eq(plus(a, 2), c))
	       ^^^^
The method plus(BigInteger, BigInteger) in the type main is not applicable for the arguments (String, int)
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5. ERROR in /home/stefan/.javax/1513273258546/main.java (at line 159)
	if (eq(plus(a, 1), b) && eq(plus(a, 2), c))
	                            ^^^^
The method plus(BigInteger, BigInteger) in the type main is not applicable for the arguments (String, int)
----------
5 problems (5 errors)
 java.lang.RuntimeException: java.lang.reflect.InvocationTargetException