Forgotten measurements

#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define rep(i, a, b) for (int i = a; i < (b); i++)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
 
signed main() {
#ifdef LOCAL
freopen(".inp", "r", stdin);
freopen(".out", "w", stdout);
#endif
 
    string s;
    cin >> s;
 
    map<char, int> cnt;
    cnt['U'] = 0;
    cnt['D'] = 0;
    cnt['L'] = 0;
    cnt['R'] = 0;
    
    for (char c : s) cnt[c]++;
    int ans = min(cnt['U'], cnt['D']) + min(cnt['L'], cnt['R']);
    cout << ans;
}

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