func_code_string: #include <bits/stdc++.h>   using namespace std;   int x[30000001];   int main() {     int n, a;     cin >> a >> n;     long long sum = 0, limit = n + a + 1;     memset((x), 0, sizeof(x));     for (long long i = 1; i * i < limit; i++)       for (long long j = i * i; j < limit; j += i * i) x[j] = i * i;     for (int i = a, j = 0; i < a + n; i++, j++) sum += (a + j) / x[i];     cout << sum << endl;     return 0;   }   