Forgotten measurements

#include <bits/stdc++.h>
using namespace std;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    string s;
    cin >> s;

    int up = count(s.begin(), s.end(), 'U');
    int down = count(s.begin(), s.end(), 'D');
    int left = count(s.begin(), s.end(), 'L');
    int right = count(s.begin(), s.end(), 'R');

    cout << min(up, down) + min(left, right) << endl;

    return 0;
}

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