func_code_string: #include <bits/stdc++.h>   using namespace std;   inline long long calc(long long x, long long k) {     if (x < 0) return 0LL;     return x / k + 1LL;   }   int main() {     long long k, a, b;     scanf( %lld%lld%lld , &k, &a, &b);     if (a <= 0 && b <= 0) {       a = abs(a), b = abs(b);       printf( %lld n , calc(a, k) - calc(b - 1LL, k));     } else if (a >= 0 && b >= 0) {       printf( %lld n , calc(b, k) - calc(a - 1LL, k));     } else {       a = abs(a);       printf( %lld n , calc(b, k) + calc(a, k) - 1LL);     }     return 0;   }   