/* eslint no-console: "off" */

function div_ceil(a, b) {
    return Math.trunc(a/b) + ((((a<0)^(b>0)) && a%b) ? 1 : 0);
}

function div_floor(a, b) {
    return Math.trunc(a/b) + ((((a>0)^(b>0)) && a%b) ? 1 : 0);
}

function Main(input) {
    let [S, F] = input.split(" ").map(s => parseInt(s.trim()));

    let ans = 1 + div_floor(S, F);
    console.log("%d", ans);
}

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