ID	grade(50%)
310	49.5
263	48.9
434	45.3
056	44.7
998	44.5
723	44.3
236	43.6
0382	41.2
350	40.9
209	39.9
851	39.8
776	39.7
502	38.5
027	37.9
8382	37.9
282	36.3
075	35.7
464	33.4
821	25.9
908	25.3
585	25.2
980	25.1
288	21.7
082	21.2
392	17.2
877	16.4
543	16.1
953	14.9
700	14.4
818	4.6
162	4.3