煎蛋的题解

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
    cin >> n;
    char c;
    int sum = 0;
    for(int i = 1; i <= n; i++){
        cin >> c;
        if(c >= 'A' && c <= 'Z')
            sum -= c;
        else sum += (c - 'a' + 1);
    }
    cout << sum;
	return 0;
}