static int runTestCase(int casenum) {
		switch (casenum) {
		case 0: {
			long N = 2L;
			long expected__ = 3L;

			return verifyCase(casenum, expected__, new MinskyMysteryDiv2().computeAnswer(N));
		}
		case 1: {
			long N = 3L;
			long expected__ = 4L;

			return verifyCase(casenum, expected__, new MinskyMysteryDiv2().computeAnswer(N));
		}
		case 2: {
			long N = 4L;
			long expected__ = 4L;

			return verifyCase(casenum, expected__, new MinskyMysteryDiv2().computeAnswer(N));
		}
		case 3: {
			long N = 15L;
			long expected__ = 8L;

			return verifyCase(casenum, expected__, new MinskyMysteryDiv2().computeAnswer(N));
		}
		case 4: {
			long N = 24L;
			long expected__ = 14L;

			return verifyCase(casenum, expected__, new MinskyMysteryDiv2().computeAnswer(N));
		}

		// custom cases

		case 5: {
			long N = 549697684831L;
			long expected__ = 1482832L;

			return verifyCase(casenum, expected__, new
					MinskyMysteryDiv2().computeAnswer(N));
		}

		/*
		 * case 6: {
		 * long N = L;
		 * long expected__ = L;
		 *
		 * return verifyCase(casenum, expected__, new
		 * MinskyMysteryDiv2().computeAnswer(N));
		 * }
		 */
		/*
		 * case 7: {
		 * long N = L;
		 * long expected__ = L;
		 *
		 * return verifyCase(casenum, expected__, new
		 * MinskyMysteryDiv2().computeAnswer(N));
		 * }
		 */
		default:
			return -1;
		}
	}