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# Finding the Percentage Hacker Rank Solution – Queslers

## Problem: Finding the Percentage Hacker Rank Solution

The provided code stub read in a dictionary containing key/value pairs of name:[Marks] for a list of students. Print the average of the marks array for the student name provided, showing 2 places after the decimal.

Example

marks key: value pairs are
‘alpha’:[20, 30, 40]
‘beta’:[30, 50, 70]
query_name = ‘beta’

The query_name is ‘beta’. beta’s average score is (30 + 50 + 70)/3 = 50.0.

## Input Format

The first line contains the integer n, the number of students’s records. The next n lines contain the names and marks obtained by a student, each value separated by a space. The final line contains query_name , the name of a student to query.

## Constraints

• 2 ≤ n ≤ 10
• 0 ≤ marks[i] ≤ 100
• length of the marks array = 3

## Output Format

Print one line: The average of the marks obtained by the particular student correct to 2 decimal places.

Sample Input 0

``````3
Krishna 67 68 69
Arjun 70 98 63
Malika 52 56 60
Malika``````

Sample Output 0

``56.00``

Explanation 0

Marks of Malika are {52, 56, 60} whose average is (52 +56 +60)/3 ⇒  56

Sample Input 1

``````2
Harsh 25 26.5 28
Anurag 26 28 30
Harsh``````

Sample Output 1

``26.50``

### Finding the Percentage Hacker Rank Solution Using Python2

``````n=int(raw_input())

dic={}

for i in range(n):
line=raw_input().split()
dic[line]=sum(map(float,line[1:]))/3.0

print '%.2f' % dic[raw_input()]``````

### Finding the Percentage Hacker Rank Solution Using Python3

``````if __name__ == '__main__':
n = int(input())
student_marks = {}
for _ in range(n):
name, *line = input().split()
scores = list(map(float, line))
student_marks[name] = scores
query_name = input()

if query_name in student_marks:
x = ((float(student_marks[query_name]) + float(student_marks[query_name]) + float(student_marks[query_name])) / 3)

print('%.2f' % x)``````

### Finding the Percentage Hacker Rank Solution Using Pypy

``````# Enter your code here. Read input from STDIN. Print output to STDOUT
d={}
for _ in range(int(raw_input())):
item = raw_input().split()
name = item
grade = [float(a) for a in item[1:]]
request = raw_input().strip()

avg = reduce(lambda x, y: x + y, d[request])/len(d[request])
print '%.2f' %(avg)``````

### Finding the Percentage Hacker Rank Solution Using Pypy3

``````# Enter your code here. Read input from STDIN. Print output to STDOUT

n = int(input())

c = 1
students = {}
while c <= n :
line = input()
inList = line.split()
students[inList] = inList[1:4]
c += 1

student = input()

sum = 0
for gs in students[student]:
sum = sum + float(gs)

print('{0:.2f}'.format(sum / 3))``````
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