コード def checkio(data): n4 = [0,1000,2000,3000] r4 = ["","M","MM","MMM"] n3 = [0,100,200,300,400,500,600,700,800,900] r3 = ["","C","CC","CCC","CD","D","DC","DCC","DCCC","CM"] n2 = [0,10,20,30,40,50,60,70,80,90] r2 = ["","X","XX","XXX","X…