func_code_string: #include <bits/stdc++.h>   const long long mod = 1e9 + 7;   const int N = 1e5 + 20;   using namespace std;   int main() {     int n, s[N], m;     s[0] = 0;     cin >> n;     for (int i = (1); i <= (n); i++) {       cin >> m;       s[i] = s[i - 1] + m;     }     cin >> m;     for (int i = (1); i <= (m); i++) {       int x, y;       cin >> x >> y;       cout << (s[y] - s[x - 1]) / 10 << endl;     }     return 0;   }   