func_code_string: #include <iostream>         using namespace std;         int main()   {    int n, q;       cin >> n >> q;       char s[n+1];    int x[n+1];       for (int i = 1; i < n+1; i++)    {     cin >> s[i];     x[i] = x[i-1] + s[i] -  ` ;       }        int l, r;       for (int i = 0; i < q; i++)    {     cin >> l >> r;     cout << (x[r]-x[l-1]) << endl;       }                      return 0;   }