#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
int main(void)
{
    int num,weight,maxweight=0;
    int weightlist[100000]={0};
    scanf("%d %d",&num,&weight);
    for(int i=0;i<num;i++)
    {
        scanf("%d",&weightlist[i]);
        if(maxweight<weightlist[i]&&weightlist[i]<=weight)
        {
            maxweight=weightlist[i];
        }
    }
    for(int i=0;i<num-1;i++)
    {
        for(int j=i+1;j<num;j++)
        {
            int val = weightlist[i]+weightlist[j];
            if(maxweight<val&&val<=weight)
            {
                maxweight=val;
            }
        }
    }
    printf("%d",maxweight);
}