Palindromi

input/code.cpp: In function 'void solve()':
input/code.cpp:9:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for (int i = 0; i <= (s.size() - 1) / 2; i++) {
      |                     ~~^~~~~~~~~~~~~~~~~~~~~

#include <bits/stdc++.h>

using namespace std;

void solve() {
    string s;
    cin >> s;
    long long ans = 0;
    for (int i = 0; i <= (s.size() - 1) / 2; i++) {
        if (s[i] != s[s.size() - 1 - i]) {
            ans++;
        }
    }
    cout << ans << endl;
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    // cout << fixed << setprecision(6) << endl;

    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }

    return 0;
}

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