I don't understand where I'm wrong. I tried the sample and the result is right!
#include<iostream>
#include<map>
using namespace std;
int main()
{
    int n,num;
    map<char,int> val;
    val['a']=1;val['b']=2;val['c']=3;val['d']=3;val['e']=3;val['f']=3;val['g']=2;val['h']=1;
    val['1']=1;val['2']=2;val['3']=3;val['4']=3;val['5']=3;val['6']=3;val['7']=2;val['8']=1;
    char xy[1];
    cin>>n;
    while(n--)
    {
        cin>>xy;
        num=val[xy[0]]+val[xy[1]];
        if(num==6)
            num+=2;
        if(num==5)
            num++;
        cout <<num<<endl;
    }
}