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

    calc(S,F);
}

function calc (S,F) {
    var val     
    val = 1 + Math.floor(S / F) ;
    console.log(val)
    
}

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