Forgotten measurements

s = input()
us = sum(int(x == 'U') for x in s)
ls = sum(int(x == 'L') for x in s)
rs = sum(int(x == 'R') for x in s)
ds = sum(int(x == 'D') for x in s)
print(min(us, ds) + min(rs, ls))

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED