#include <bits/stdc++.h>
 
using namespace std;
/* Template file(modified) for Online Algorithmic Competitions */
/* Macros */
	/* Loops */
	#define fl(i,a,b) for(int i(a);i<(b);i++)
	#define rep(i,n) fl(i,0,n)
int main(){
 
	#ifndef ONLINE_JUDGE
	freopen("/Users/sahilbansal/Desktop/input.txt","r",stdin);
	freopen("/Users/sahilbansal/Desktop/output.txt","w",stdout);
	#endif
 
	int number_of_stacks, height_limit;
	cin >> number_of_stacks >> height_limit;
 
	int heights[number_of_stacks + 1];
	rep(i, number_of_stacks){
		cin >> heights[i];
	}
 
	int current_pos_of_crane = 0;