const Main = (input) => {
        const dataArray = input.split(' ');
        var monsterStrength = dataArray[0];
        const attack = dataArray[1];
        var attackCount = 0;
      
        while(monsterStrength > 0){
			monsterStrength -= attack;
          attackCount ++;
        }
      
        console.log(attackCount);
    }

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