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def readf1(name):
    f=open(name,'r')
    a=[]
    x='0'
    while x:
        x=f.readline()
        a.append(list(map(int, x.split())))
    f.close()
    return a[:len(a)-1]

def final_t(a):
    n=len(a)
    m=len(a[0])
    b=[]
    for i in range(n):
        for j in range(m):
            if a[i][j]>0:
                t=True
                if  i<n-1 and a[i+1][j]>0:
                    t=False
                if  j<m-1 and a[i][j+1]>0:
                    t=False 
                if t:
                    b.append([i,j])
    return b

print(readf1('18-01.txt'))
print(final_t(readf1('18-01.txt')))

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