"use strict";
function Main(input) {
    let StrSize, HouseFloor;
    [StrSize, HouseFloor] = input.split(" ").map(i => Number(i));
    const ans = Math.floor(StrSize / HouseFloor);
    console.log(String(ans + 1));
}
//テストの入力を受け取る
Main(require("fs").readFileSync("/dev/stdin", "utf8"));
//Main("10 5");
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