CSES - DatatÃ¤hti 2016 alku - Results
 Task: Osajono Sender: Ilari Submission time: 2015-09-28 23:32:32 Language: Python3 Status: READY Result: 100
Feedback
groupverdictscore
#1ACCEPTED12
#2ACCEPTED27
#3ACCEPTED61
Test results
testverdicttimegroup
#1ACCEPTED0.19 s1details
#2ACCEPTED0.19 s1details
#3ACCEPTED0.18 s1details
#4ACCEPTED0.18 s1details
#5ACCEPTED0.18 s1details
#6ACCEPTED0.17 s2details
#7ACCEPTED0.18 s2details
#8ACCEPTED0.18 s2details
#9ACCEPTED0.17 s2details
#10ACCEPTED0.19 s2details
#11ACCEPTED0.18 s3details
#12ACCEPTED0.18 s3details
#13ACCEPTED0.20 s3details
#14ACCEPTED0.18 s3details
#15ACCEPTED0.17 s3details

### Code

```#!/usr/bin/python3
from collections import Counter
from operator import mul    # or mul=lambda x,y:x*y
from fractions import Fraction
import functools
def nCk(n,k):
return int(functools.reduce(mul, (Fraction(n-i, i+1) for i in range(k)), 1))

a=input()
b=len(a)
#c=0
d=0
#for i in range(0,b):
#	for j in range(i,b):
#print(a[i:j+1])
#		if a[i:j+1][0] == a[i:j+1][-1]:
#			c+=1

counter = Counter(a)
for i in list(counter.values()):
d+=nCk(i,2)
d+=b
#print(counter.values())
print(d)

```

### Test details

#### Test 1

Group: 1

Verdict: ACCEPTED

input
BBBAABBBAAAABBAAAABAABAABBBBBB...

correct output
2554

user output
2554

#### Test 2

Group: 1

Verdict: ACCEPTED

input
GDFVYWQCZAFGICSXOSWBZMGPDBSSVL...

correct output
299

user output
299

#### Test 3

Group: 1

Verdict: ACCEPTED

input
AAAAAAAAAAAAAAAAAAAAAAAAAZAAAA...

correct output
4314

user output
4314

#### Test 4

Group: 1

Verdict: ACCEPTED

input
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

correct output
4231

user output
4231

#### Test 5

Group: 1

Verdict: ACCEPTED

input
QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...

correct output
5050

user output
5050

#### Test 6

Group: 2

Verdict: ACCEPTED

input
BBABABBBABBAABBABBABAABAAABABA...

correct output
6253029

user output
6253029

#### Test 7

Group: 2

Verdict: ACCEPTED

input
RBKJMLDVQMKHYKCNDIVVKOMFUXTFMG...

correct output
485173

user output
485173

#### Test 8

Group: 2

Verdict: ACCEPTED

input
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

correct output
12427725

user output
12427725

#### Test 9

Group: 2

Verdict: ACCEPTED

input
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

correct output
12467549

user output
12467549

#### Test 10

Group: 2

Verdict: ACCEPTED

input
QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...

correct output
12502500

user output
12502500

#### Test 11

Group: 3

Verdict: ACCEPTED

input
BAAAAABABBABAABAABABABBBABBAAB...

correct output
2500051369

user output
2500051369

#### Test 12

Group: 3

Verdict: ACCEPTED

input
ABBURXDRVXAYBPXXOQZNYHLWGUEEWR...

correct output
192407124

user output
192407124

#### Test 13

Group: 3

Verdict: ACCEPTED

input
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

correct output
4998050400

user output
4998050400

#### Test 14

Group: 3

Verdict: ACCEPTED

input
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

correct output
4998850144

user output
4998850144

#### Test 15

Group: 3

Verdict: ACCEPTED

input
QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...

correct output
5000050000

user output
5000050000