func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     int n;     cin >> n;     int arr[n];     for (int i = 0; i < n; i++) cin >> arr[i];     vector<int> a(n + 1);     for (int i = 1; i <= n; i++) {       a[i] = a[i - 1] + arr[i - 1];     }     int m;     cin >> m;     for (int i = 0; i < m; i++) {       int l, r;       cin >> l >> r;       l--;       cout << (a[r] - a[l]) / 10 << endl;     }   }   int main() {     ios_base::sync_with_stdio(0);     cin.tie(NULL);     int t = 1;     while (t--) solve();     return 0;   }   