s=0
b=[]
с=[]
i=0
j=0
while 0==0:
    a=[str(i) for i in input().split()]
    d=len(a)
    s+=1
    b+=[a]
    if a==['end']:
        break
с=int(b[i-1][j]+int(b[i+1][j]+int(b[i][j-1]+int(b[i][j+1])
print(с)