2499,2503,2503,2504,2504,2505,2506,2507,2507,2508,2507,2506,2505,2504,2503,2502,2501,2501,2500,2500;1002,1002,1001,1000,999,998,997,996,995,994,993,992,991,992,992,994,995,999,999,1000