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Language: Easy Finding
Description Given a M×N matrix . AA_{ij} ∈ {0, 1} (0 ≤ i < M, 0 ≤ j < N), could you find some rows that let every cloumn contains and only contains one 1. Input There are multiple cases ended by EOF. Test case up to 500.The first line of input is M, N (M ≤ 16, N ≤ 300). The next M lines every line contains N integers separated by space. Output For each test case, if you could find it output "Yes, I found it", otherwise output "It is impossible" per line. Sample Input 3 3 0 1 0 0 0 1 1 0 0 4 4 0 0 0 1 1 0 0 0 1 1 0 1 0 1 0 0 Sample Output Yes, I found it It is impossible Source POJ Monthly Contest - 2009.08.23, MasterLuo |

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