Osajono

syote = input()
qty = len(syote)
import re
def countO(pattern, thestring):
    total = 0
    start = 0
    end = len(thestring)
    there = re.compile(pattern)
    mo = None
    stop = False
    mostart = 0
    while True:
        while True:
            mo = there.search(thestring, start, end)
            if mo is None and stop:
                return total
            elif mo is None:
                stop = True
                break
            else:
                mostart = mo.start()
                stop = False
            total += 1
            end = mo.end()-1
        start = 1 + mostart
        end = len(thestring)
 
for c in "ABCDEFGHIJKLMNOPQRSTUVWXYZ":
    qty += countO(c+".*"+c, syote)
print(qty)

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 7

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 8

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 10

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED