print([3,6,15,12,51,30,63,24,315,102,3075,60,12291,126,255,48,65535,630,786435,204,4095,6150,4194303,120,17825775,24582,436905,252,805306371,510,1023,96,1048575,131070,16777215,1260,206158430211,1572870,5592405,408][int(input())-1])