题解

#include<iostream>
using namespace std;
int main(){
char a;
int b,c=0,d;
cin>>b;
for(int i=1;i<=b;i++){
cin>>a;
d=a;
if(d>=97&&d<=122){
d=d-96;
}
else{
d=0-d;
}
c=c+d;
}
cout<<c;
return 0;
}