I was doing a problem in which you are given a number **P** and a number **N**. You have to find a number **K** such that K^N is equal to P.

CONSTRAINTS ARE : 1 ≤ n ≤ 200, 1 ≤ p < 10^101

The python code that got AC :

```
while True:
try:
n = int(input())
p = int(input())
print(round(p**(1/n)))
except:
break
```

Why do I have to use the round function why can't I use ceil or floor?

When should I use round?

These kinds of questions cost me a lot of WAs. Can someone tell me how to deal with these kinds of questions?