#define _USE_MATH_DEFINES #include <iostream> //cin, cout #include <vector> //vector #include <algorithm> //sort,min,max,count #include <string> //string,getline, to_string #include <ios> //fixed #include <iomanip> //setprecision #include <utility> //swap, pair #include <cstdlib> //abs(int) #include <cmath> //sqrt,ceil,M_PI, pow, sin #include <sstream> //stringstream, getline #include <numeric> //gcd, accumlate #include <deque> //deque #include <random> //randam_device #include <limits> //numeric_limits using namespace std; constexpr long long int D_MOD = 1000000007; int main() { long long int W, D; cin >> W >> D; for (long long int i = D; i > 1; i--) { W = W - (W / (i * i)); } cout << W << endl; return 0; }