22 lines
468 B
Python

def main():
while True:
fuel = input("Fraction:\t\t")
try:
x, y = map(int, fuel.split('/'))
if x > y:
continue
result = x / y
break
except (ValueError, ZeroDivisionError):
continue
if result <= 0.01:
print("E")
elif result >= 0.99:
print("F")
else:
print(f"{int(round(result*100, 0))}%")
if __name__ == "__main__":
main()