def fiability(aa_chain, struct_of_aa):
    average=[]
    for i in range(len(aa_chain)):
        temp=0
        for j in range(len(aa_chain[i][1])):
            actual_structure = aa_chain[i][1][j]
            predicted_structure = struct_of_aa[i][j]
            if actual_structure == predicted_structure:
                temp+=1
        temp=temp/len(aa_chain[i][0])
        average.append(temp)

    return sum(average)/len(average)