Forgotten measurements

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

int main() {
    
    string s;
    cin >> s;

    int R = 0, L = 0, U = 0, D = 0;
    for (char c : s) {
        if (c == 'R') R++;
        if (c == 'L') L++;
        if (c == 'U') U++;
        if (c == 'D') D++;
    }

    cout << min(R,L) + min(U,D);

}

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