func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int sum = 0, n, a[120], x, y, i;     cin >> n;     for (i = 0; i < n - 1; ++i) {       cin >> a[i];     }     cin >> x >> y;     for (i = x - 1; i < y - 1; ++i) {       sum += a[i];     }     cout << sum <<   n ;   }   