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using System;
using System.IO;
class Start{
  static void Main(){var sw=new StreamWriter(Console.OpenStandardOutput()){AutoFlush=false};Console.SetOut(sw);
    long a,b;Lin(out a,out b);
    Lout(a/b+1);
  Console.Out.Flush();}
  static void Lin<T>(out T a){
    if(typeof(T)==typeof(long))a=(T)(object)long.Parse(Console.ReadLine());
    else if(typeof(T)==typeof(string))a=(T)(object)Console.ReadLine();
    else if(typeof(T)==typeof(char))a=(T)(object)Console.ReadLine()[0];
    else a=(T)(object)double.Parse(Console.ReadLine());
  }
  static void Lin<T,U>(out T a,out U b){
    string[] c=Console.ReadLine().Split(' ');
    if(typeof(T)==typeof(long))a=(T)(object)long.Parse(c[0]);
    else if(typeof(T)==typeof(string))a=(T)(object)c[0];
    else if(typeof(T)==typeof(char))a=(T)(object)c[0][0];
    else a=(T)(object)double.Parse(c[0]);
    if(typeof(U)==typeof(long))b=(U)(object)long.Parse(c[1]);
    else if(typeof(U)==typeof(string))b=(U)(object)c[1];
    else if(typeof(U)==typeof(char))b=(U)(object)c[1][0];
    else b=(U)(object)double.Parse(c[1]);
  }
  static void Lin<T,U,V>(out T a,out U b,out V d){
    string[] c=Console.ReadLine().Split(' ');
    if(typeof(T)==typeof(long))a=(T)(object)long.Parse(c[0]);
    else if(typeof(T)==typeof(string))a=(T)(object)c[0];
    else if(typeof(T)==typeof(char))a=(T)(object)c[0][0];
    else a=(T)(object)double.Parse(c[0]);
    if(typeof(U)==typeof(long))b=(U)(object)long.Parse(c[1]);
    else if(typeof(U)==typeof(string))b=(U)(object)c[1];
    else if(typeof(U)==typeof(char))b=(U)(object)c[1][0];
    else b=(U)(object)double.Parse(c[1]);
    if(typeof(V)==typeof(long))d=(V)(object)long.Parse(c[2]);
    else if(typeof(V)==typeof(string))d=(V)(object)c[2];
    else if(typeof(V)==typeof(char))d=(V)(object)c[2][0];
    else d=(V)(object)double.Parse(c[2]);
  }
  static void Lin<T,U,V,W>(out T a,out U b,out V d,out W e){
    string[] c=Console.ReadLine().Split(' ');
    if(typeof(T)==typeof(long))a=(T)(object)long.Parse(c[0]);
    else if(typeof(T)==typeof(string))a=(T)(object)c[0];
    else if(typeof(T)==typeof(char))a=(T)(object)c[0][0];
    else a=(T)(object)double.Parse(c[0]);
    if(typeof(U)==typeof(long))b=(U)(object)long.Parse(c[1]);
    else if(typeof(U)==typeof(string))b=(U)(object)c[1];
    else if(typeof(U)==typeof(char))b=(U)(object)c[1][0];
    else b=(U)(object)double.Parse(c[1]);
    if(typeof(V)==typeof(long))d=(V)(object)long.Parse(c[2]);
    else if(typeof(V)==typeof(string))d=(V)(object)c[2];
    else if(typeof(V)==typeof(char))d=(V)(object)c[2][0];
    else d=(V)(object)double.Parse(c[2]);
    if(typeof(W)==typeof(long))e=(W)(object)long.Parse(c[3]);
    else if(typeof(W)==typeof(string))e=(W)(object)c[3];
    else if(typeof(W)==typeof(char))e=(W)(object)c[3][0];
    else e=(W)(object)double.Parse(c[3]);
  }
  static void Lin<T,U,V,W,X>(out T a,out U b,out V d,out W e,out X f){
    string[] c=Console.ReadLine().Split(' ');
    if(typeof(T)==typeof(long))a=(T)(object)long.Parse(c[0]);
    else if(typeof(T)==typeof(string))a=(T)(object)c[0];
    else if(typeof(T)==typeof(char))a=(T)(object)c[0][0];
    else a=(T)(object)double.Parse(c[0]);
    if(typeof(U)==typeof(long))b=(U)(object)long.Parse(c[1]);
    else if(typeof(U)==typeof(string))b=(U)(object)c[1];
    else if(typeof(U)==typeof(char))b=(U)(object)c[1][0];
    else b=(U)(object)double.Parse(c[1]);
    if(typeof(V)==typeof(long))d=(V)(object)long.Parse(c[2]);
    else if(typeof(V)==typeof(string))d=(V)(object)c[2];
    else if(typeof(V)==typeof(char))d=(V)(object)c[2][0];
    else d=(V)(object)double.Parse(c[2]);
    if(typeof(W)==typeof(long))e=(W)(object)long.Parse(c[3]);
    else if(typeof(W)==typeof(string))e=(W)(object)c[3];
    else if(typeof(W)==typeof(char))e=(W)(object)c[3][0];
    else e=(W)(object)double.Parse(c[3]);
    if(typeof(X)==typeof(long))f=(X)(object)long.Parse(c[4]);
    else if(typeof(X)==typeof(string))f=(X)(object)c[4];
    else if(typeof(X)==typeof(char))f=(X)(object)c[4][0];
    else f=(X)(object)double.Parse(c[4]);
  }
  static void Lin<T,U,V,W,X,Y>(out T a,out U b,out V d,out W e,out X f,out Y g){
    string[] c=Console.ReadLine().Split(' ');
    if(typeof(T)==typeof(long))a=(T)(object)long.Parse(c[0]);
    else if(typeof(T)==typeof(string))a=(T)(object)c[0];
    else if(typeof(T)==typeof(char))a=(T)(object)c[0][0];
    else a=(T)(object)double.Parse(c[0]);
    if(typeof(U)==typeof(long))b=(U)(object)long.Parse(c[1]);
    else if(typeof(U)==typeof(string))b=(U)(object)c[1];
    else if(typeof(U)==typeof(char))b=(U)(object)c[1][0];
    else b=(U)(object)double.Parse(c[1]);
    if(typeof(V)==typeof(long))d=(V)(object)long.Parse(c[2]);
    else if(typeof(V)==typeof(string))d=(V)(object)c[2];
    else if(typeof(V)==typeof(char))d=(V)(object)c[2][0];
    else d=(V)(object)double.Parse(c[2]);
    if(typeof(W)==typeof(long))e=(W)(object)long.Parse(c[3]);
    else if(typeof(W)==typeof(string))e=(W)(object)c[3];
    else if(typeof(W)==typeof(char))e=(W)(object)c[3][0];
    else e=(W)(object)double.Parse(c[3]);
    if(typeof(X)==typeof(long))f=(X)(object)long.Parse(c[4]);
    else if(typeof(X)==typeof(string))f=(X)(object)c[4];
    else if(typeof(X)==typeof(char))f=(X)(object)c[4][0];
    else f=(X)(object)double.Parse(c[4]);
    if(typeof(Y)==typeof(long))g=(Y)(object)long.Parse(c[5]);
    else if(typeof(Y)==typeof(string))g=(Y)(object)c[5];
    else if(typeof(Y)==typeof(char))g=(Y)(object)c[5][0];
    else g=(Y)(object)double.Parse(c[5]);
  }
  static void Lin<T,U,V,W,X,Y,Z>(out T a,out U b,out V d,out W e,out X f,out Y g,out Z h){
    string[] c=Console.ReadLine().Split(' ');
    if(typeof(T)==typeof(long))a=(T)(object)long.Parse(c[0]);
    else if(typeof(T)==typeof(string))a=(T)(object)c[0];
    else if(typeof(T)==typeof(char))a=(T)(object)c[0][0];
    else a=(T)(object)double.Parse(c[0]);
    if(typeof(U)==typeof(long))b=(U)(object)long.Parse(c[1]);
    else if(typeof(U)==typeof(string))b=(U)(object)c[1];
    else if(typeof(U)==typeof(char))b=(U)(object)c[1][0];
    else b=(U)(object)double.Parse(c[1]);
    if(typeof(V)==typeof(long))d=(V)(object)long.Parse(c[2]);
    else if(typeof(V)==typeof(string))d=(V)(object)c[2];
    else if(typeof(V)==typeof(char))d=(V)(object)c[2][0];
    else d=(V)(object)double.Parse(c[2]);
    if(typeof(W)==typeof(long))e=(W)(object)long.Parse(c[3]);
    else if(typeof(W)==typeof(string))e=(W)(object)c[3];
    else if(typeof(W)==typeof(char))e=(W)(object)c[3][0];
    else e=(W)(object)double.Parse(c[3]);
    if(typeof(X)==typeof(long))f=(X)(object)long.Parse(c[4]);
    else if(typeof(X)==typeof(string))f=(X)(object)c[4];
    else if(typeof(X)==typeof(char))f=(X)(object)c[4][0];
    else f=(X)(object)double.Parse(c[4]);
    if(typeof(Y)==typeof(long))g=(Y)(object)long.Parse(c[5]);
    else if(typeof(Y)==typeof(string))g=(Y)(object)c[5];
    else if(typeof(Y)==typeof(char))g=(Y)(object)c[5][0];
    else g=(Y)(object)double.Parse(c[5]);
    if(typeof(Z)==typeof(long))h=(Z)(object)long.Parse(c[6]);
    else if(typeof(Z)==typeof(string))h=(Z)(object)c[6];
    else if(typeof(Z)==typeof(char))h=(Z)(object)c[6][0];
    else h=(Z)(object)double.Parse(c[6]);
  }
  static void Lout(string a){Console.WriteLine(a);}
  static void Out(string a){Console.Write(a);}
  static void Lout(long a){Console.WriteLine(a);}
  static void Out(long a){Console.Write(a);}
  static void Lout(double a){Console.WriteLine(a);}
  static void Out(double a){Console.Write(a);}
  static void Lout(char a){Console.WriteLine(a);}
  static void Out(char a){Console.Write(a);}
  static void Swap<T>(ref T a,ref T b){T c=a;a=b;b=c;}
}