Forgotten measurements

input/code.cpp: In function 'int main()':
input/code.cpp:11:15: warning: array subscript has type 'char' [-Wchar-subscripts]
   11 |         c[s[i]]++;
      |               ^

#include <bits/stdc++.h>

// g++ -std=c++17 f.cpp -o f
using namespace std;
int c[100000];
int main() {
    string s;
    cin >> s;
    int n = s.length();
    for (int i = 0; i < n; ++i){
        c[s[i]]++;
    }
    int ans = min(c['U'], c['D'])+min(c['R'], c['L']);
    cout << ans << 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