elevator_cd

var elevator = {
    mp: 0,
    mw: 0,
    pc: 0,
    w: 0,
    sc: 0,
    fc: 0,
    fl: [],
    push: function(person) {
        if (this.w + person.weight <= this.mw && this.pc +1 <= this.mp) {
            this.w += person.weight;
            this.pc += 1;
            if (this.fl.indexOf(person.floor) === -1) {
                this.fl.push(person.floor);
            }
            return true;
        }
        return false;
    },
    clear: function() {
        this.fc += (this.fl.length + 1);
        this.pc = 0;
        this.w = 0;
        this.fl = [];
    },
    init: function(mp, mw) {
        this.mw = mw;
        this.mp = mp;
    }
}


function solution(A, B, M, X, Y) {
    elevator.init(X, Y);
    var people = A.map(function(c, i) {
        return {weight: c, floor:B[i]};
    });
    while (people.length >0) {
        while (people.length >0 && elevator.push(people[0])) {
            people.shift();
        }
        elevator.clear();
    }
    return elevator.fc;
}

var A = [60, 80, 40];
var B = [2, 3, 5];
var M = 5;
var X = 2;
var Y = 200;
var x = solution(A, B, M, X, Y);
console.log(x);