TempStr = input()
if TempStr[-1] in ['F','f']:
 C=(eval(TempStr[0:-1])-32)/1.8
 print("{:.2f}C".format(C))
elif TempStr[-1] in ['C','c']:
 F=1.8*eval(TempStr[0:-1])+32
 print("{:.2f}F".format(F))
else:
 print("输入格式错误")