2499,2501,2503,2506,2508,2509,2512,2513,2515,2517,2518,2517,2513,2507,2504,2503,2501,2500,2500;1002,1003,1004,1004,1003,1001,999,1001,999,999,997,996,997,998,998,999,999,999,1000