func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long int mod = 1000000007;   const long long int inf = 0x3f3f3f3f3f3f3f3fLL;   const double eps = 1e-9;   const double PI = acos(-1);   long long int i, j, k;   void solve(void);   inline bool equal(double a, double b) { return fabs(a - b) < eps; }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout << fixed << setprecision(10);     int t = 1;     while (t--) solve();     return 0;   }   long long int m;   unordered_map<long long int, long long int> f;   long long int fib(long long int n) {     if (n == 0) return 0;     if (n == 1 || n == 2) return (f[n] = 1) % m;     if (f[n]) return f[n];     long long int k = (n & 1) ? (n + 1) / 2 : n / 2;     f[n] = (n & 1) ? ((fib(k) * fib(k)) % m + (fib(k - 1) * fib(k - 1)) % m) % m                    : (((2 * fib(k - 1)) % m + fib(k)) % m * fib(k)) % m;     return f[n];   }   void solve() {     long long int l, r, k;     cin >> m >> l >> r >> k;     long long int d = (r - l) / (k - 1);     while (d > 1) {       if (1 + r / d - (l + d - 1) / d >= k) break;       long long int N = 1 + r / d;       d -= ((N * d - r) + (N - 1)) / N;     }     cout << fib(d) <<   n ;   }   