Submission #4060486

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Source Code Expand

H,W = map(int,input().split())

A=[]
for i in range(H):
    A.append(list(map(int,input().split())))

ans=[]

for i in range(H):
    for j in range(W):
        if i%2==0:
            n=j
        else:
            n=W-1-j
        if A[i][n]%2==1:
            A[i][n]-=1
            if i<H-1 and ((i%2==0 and n==W-1) or (i%2==1 and n==0)):
                A[i+1][n]+=1
                ans.append('{} {} {} {}'.format(i+1,n+1,i+2,n+1))
            if (i%2==0 and n!=W-1) or (i%2==1 and n!=0):
                A[i][n+(-1)**(i%2)]+=1
                ans.append('{} {} {} {}'.format(i+1,n+1,i+1,n+1+(-1)**(i%2)))

print(len(ans))
for s in ans:
    print(s)

Submission Info

Judge Result