In the problem Naive Chef when I write the following code the sample test case’s output and my output was same. But when I submit it was completly wrong except the 1st one of the subtask one. Please help me.
Test = int(input())
for t in range(Test):
n,a,b = map(int,input().split())
n_i = list(input())
n_i = ' '.join(n_i).split()
n_i = [*set(n_i)]
for i in range(len(n_i)):
n_i[i]= int(n_i[i])
pa = a/len(n_i)
pb = b/len(n_i)
x = pa*pb
x="{0:.10f}".format(x)
print(x)