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ID	DATE	PROBLEM	RESULT	TIME	MEM	LANG
21477927	2018-04-05 19:26:48	Query on a tree IV	wrong answer	0.76	99M	CPP14
20298536	2017-10-05 16:08:17	Query on a tree IV	wrong answer	0.68	94M	CPP14
20298475	2017-10-05 16:03:56	Query on a tree IV	compilation error	-	-	CPP14
20284460	2017-10-03 19:32:12	Query on a tree IV	wrong answer	0.54	79M	CPP14

code...