for m in range(1,13): for ten in range(10): one=m-ten dey=ten*10+one if one>=0 and one<10 : if (m in[1,3,5,7,8,10,12]) and dey<=31: print(m,"月",dey,"日") elif(m==2) and dey<=28: print(m,"月",dey,"日") elif dey<=30: print(m,"月",dey,"日")