static int runTestCase(int casenum__) {
		switch (casenum__) {
		case 0: {
			String code = "13579";
			int expected__ = 21;

			return verifyCase(casenum__, expected__, new CheckFunction().newFunction(code));
		}
		case 1: {
			String code = "02468";
			int expected__ = 28;

			return verifyCase(casenum__, expected__, new CheckFunction().newFunction(code));
		}
		case 2: {
			String code = "73254370932875002027963295052175";
			int expected__ = 157;

			return verifyCase(casenum__, expected__, new CheckFunction().newFunction(code));
		}

		// custom cases

		/*
		 * case 3: {
		 * String code = ;
		 * int expected__ = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * CheckFunction().newFunction(code));
		 * }
		 */
		/*
		 * case 4: {
		 * String code = ;
		 * int expected__ = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * CheckFunction().newFunction(code));
		 * }
		 */
		/*
		 * case 5: {
		 * String code = ;
		 * int expected__ = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * CheckFunction().newFunction(code));
		 * }
		 */
		default:
			return -1;
		}
	}