func_code_string: #include <bits/stdc++.h>   using namespace std;   long long po(long long x, long long n) {     long long res = 1;     while (n > 0) {       if (n & 1) res = (res * x) % 998244353;       n = n / 2;       x = (x * x) % 998244353;     }     return res;   }   long long fac[500000 + 1] = {0};   long long ifac[500000 + 1] = {0};   void pre() {     fac[0] = ifac[0] = 1;     for (int i = 1; i <= 500000; i++) {       fac[i] = (i * fac[i - 1]) % 998244353;       ifac[i] = po(fac[i], 998244353 - 2);     }   }   long long nCr(long long n, long long r) {     if (r > n || r < 0 || n < 0) return 0;     return (((fac[n] * ifac[r]) % 998244353) * ifac[n - r]) % 998244353;   }   void func() {     long long n, k;     cin >> n >> k;     long long ans = 0;     pre();     for (int i = 1; i <= n; i++) {       ans = (ans + nCr(n / i - 1, k - 1)) % 998244353;     }     cout << ans <<   n ;   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     long long t = 1;     while (t--) func();   }   