description Problem history Submissions question_mark Qna how_to_vote Vote #5608 upload 98 done 50 how_to_reg 41 call_split Subtask 지뢰 찾기(Minesweeper) timer 1s memory 32MB keyboard_tab_rtl chevron_left 491 492 493 494 495 496 497 498 499 500 chevron_right keyboard_tab