static int runTestCase(int casenum__) {
		switch (casenum__) {
		case 0: {
			int P = 5;
			int K = 4;
			int expected__ = 6;

			return verifyCase(casenum__, expected__, new NinjaTurtles().countOpponents(P, K));
		}
		case 1: {
			int P = 1;
			int K = 4;
			int expected__ = 3;

			return verifyCase(casenum__, expected__, new NinjaTurtles().countOpponents(P, K));
		}
		case 2: {
			int P = 13;
			int K = 6;
			int expected__ = -1;

			return verifyCase(casenum__, expected__, new NinjaTurtles().countOpponents(P, K));
		}
		case 3: {
			int P = 13;
			int K = 17;
			int expected__ = 30;

			return verifyCase(casenum__, expected__, new NinjaTurtles().countOpponents(P, K));
		}
		case 4: {
			int P = 122;
			int K = 21;
			int expected__ = 258;

			return verifyCase(casenum__, expected__, new NinjaTurtles().countOpponents(P, K));
		}

		// custom cases

		/*
		 * case 5: {
		 * int P = ;
		 * int K = ;
		 * int expected__ = ;
		 *
		 * return verifyCase(casenum__, expected__, new
		 * NinjaTurtles().countOpponents(P, K));
		 * }
		 */
		/*
		 * case 6: {
		 * int P = ;
		 * int K = ;
		 * int expected__ = ;
		 *
		 * return verifyCase(casenum__, expected__, new
		 * NinjaTurtles().countOpponents(P, K));
		 * }
		 */
		/*
		 * case 7: {
		 * int P = ;
		 * int K = ;
		 * int expected__ = ;
		 *
		 * return verifyCase(casenum__, expected__, new
		 * NinjaTurtles().countOpponents(P, K));
		 * }
		 */
		default:
			return -1;
		}
	}