#include<iostream> 
#include<cstdio> 
#include<iomanip> 
using namespace std; 
int main(){
	freopen("seqa.in","r",stdin);
	freopen("seqa.out","w",stdout);
	int n,k,x[100005],p,q=0,y,m=0;
	cin>>n>>k;
	for(int a=1;a<=n;a++){
		cin>>x[a];
		q=q+x[a];
	}
	p=x[1];
	q=q-p;
	for(int a=2;a<=n;a++){
		if(p>=q){
			y=p;
		}
		else{
			y=q;
		}
		if(y<=m){
			cout<<y;
		}
		p=p+x[a];
		q=q-x[a];
	}
	return 0;
}