Palindromi

#include <bits/stdc++.h>
 
#define debug(x) cout << #x << ": " << (x) << endl
 
using namespace std;

void solve() {
    string str;
    cin >> str;
    int l = str.size();

    int ans=0;
    for (int i=0; i<l/2; i++) {
        if (str[i] != str[l-i-1]) ans++;
    }

    cout << ans << "\n";

}

 
int main() {
    cin.tie(0) -> ios::sync_with_stdio(0);
    solve();
}

Test 1 (public)

Verdict: ACCEPTED

Test 2 (public)

Verdict: ACCEPTED

Test 3 (public)

Verdict: ACCEPTED

Test 4 (public)

Verdict: ACCEPTED

Test 5 (public)

Verdict: ACCEPTED

Test 6 (public)

Verdict: ACCEPTED

Test 7 (public)

Verdict: ACCEPTED

Test 8 (public)

Verdict: ACCEPTED

Test 9 (public)

Verdict: ACCEPTED

Test 10 (public)

Verdict: ACCEPTED