#include<bits/stdc++.h>
using namespace std;
int n,a[5000050],ans,b[5000050],l,r,c;
int main(){
	scanf("%d%d",&n,&n);
	for(int i=1;i<=n;i++) scanf("%d",&a[i]);
	l=1,r=n,c=n;
	while(l<=r){
		if(a[l]<=a[r]){
			b[l]=c;			
			c--;
			ans=max(ans,a[l]+c);
			l++;
		}
		else{
			b[r]=c;			
			c--;
			ans=max(ans,a[r]+c);
			r--;
		}
	}
	printf("%d\n",ans);
	for(int i=1;i<=n;i++) printf("%d ",b[i]); 
}