function Main (input){
    var line = input.split(" ");
    var S = +line[0];
    var F = +line[1];

    rapt(S,F);
}

function rapt(S,F){
    var h = 1;

    h += Math.floor(S / F);

    console.log(h);
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));