#include <iostream>
using namespace std;

int main() {
    int n, x;
    cin >> n >> x;
    // 将电水箱容量从升转换为毫升
    int totalCapacity = n * 1000;
    // 计算能倒的杯数，不足 1 杯算 1 杯，使用向上取整
    int cupCount = (totalCapacity + x - 1) / x;
    cout << cupCount << endl;
    return 0;
}    
/**************************************************************
	Problem: 1309
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/