**Physical Address**

304 North Cardinal St.

Dorchester Center, MA 02124

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.

The first line contains the integer ** n**, the number of students’s records. The next

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

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`

```
n=int(raw_input())
dic={}
for i in range(n):
line=raw_input().split()
dic[line[0]]=sum(map(float,line[1:]))/3.0
print '%.2f' % dic[raw_input()]
```

```
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][0]) + float(student_marks[query_name][1]) + float(student_marks[query_name][2])) / 3)
print('%.2f' % x)
```

```
# 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[0]
grade = [float(a) for a in item[1:]]
d[name] = grade
request = raw_input().strip()
avg = reduce(lambda x, y: x + y, d[request])/len(d[request])
print '%.2f' %(avg)
```

```
# 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[0]] = 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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