journalist.cpp

/* Read input from STDIN. Print your output to STDOUT*/
#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>
#include <iostream>
#include <string>
using namespace std;
int journalist (int n, string str) {
    int count = 0;
    int left = 0, right = n-1;
    for(int i=0; i<n/2; i++) {
        if(str[left] != str[right]) count = count+2;
        left ++;
        right --;
    }
    return count;
}
int main(int argc, char *a[])
{
    int n;
    cin>>n;
    string str;
    cin>>str;
    cout<<journalist(n, str);
}