Palindromi

#include <iostream>
using namespace std;

int main(){
    string s;
    cin >> s;
    int displacementFromEnd = 0;
    int a = s.length()/2;

    if((s.length()%2)!=0){
        s = s.substr(0, a) + s.substr(a+1, a);
    }
    int b = s.length();
    int count = 0;
    while(displacementFromEnd<a){
        if(s[displacementFromEnd] != s[b-1]){
            count++;
        }
        displacementFromEnd++;
    }
    cout << count<<"\n";
}

Test 1 (public)

Verdict: WRONG ANSWER

Test 2 (public)

Verdict: WRONG ANSWER

Test 3 (public)

Verdict: ACCEPTED

Test 4 (public)

Verdict: ACCEPTED

Test 5 (public)

Verdict: ACCEPTED

Test 6 (public)

Verdict: WRONG ANSWER

Test 7 (public)

Verdict: ACCEPTED

Test 8 (public)

Verdict: ACCEPTED

Test 9 (public)

Verdict: WRONG ANSWER

Test 10 (public)

Verdict: WRONG ANSWER