func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int L, v, l, r, d;       cin >> L >> v >> l >> r;       if (r == l && r % v == 0)         d = 1;       else         d = r / v - (l - 1) / v;       cout << L / v - d <<   n ;     }     return 0;   }   