#include <bits/stdc++.h>
#define endl "\n"
#define debug(a) cout << #a << ": " << a << endl
#define debugLine() cout << "==============" << endl
#define tick() cout << "Tick" << endl
#define testCases() int t; cin >> t; while(t--)
#define all(a) a.begin(), a.end()
#define fillWith(a, b) memset(a, b, sizeof(a))
#define Mod 1000000007 
#define goFast() ios::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define files(x) freopen(x, "r", stdin)
typedef long long ll;
using namespace std;

#define int long long

main() {
    goFast();
    int N, T;
    cin >> N >> T;
    int x = N / T + 1;
    cout << --x << endl;
}