51 		exit(1);  in main()
56 		exit(2);  in main()
83 		exit(3);  in main()
88 		exit(3);  in main()
101 		exit(4);  in main()
106 		exit(4);  in main()
111 		exit(4);  in main()
120 		exit(5);  in main()
126 			exit(5);  in main()
133 			exit(5);  in main()
142 		exit(1);  in main()
146 		exit(1);  in main()
149 	exit(0);  in main()