The PDF file of all problems can be downloaded HERE
The first line of the input file contains an integer T (1 <= T <= 50) indicating the number of test cases.
Each test case starts with two positive integers N , D (N*D <=200), which is the number of enemy heroes and the space dimensionality, respectively. Then follows N lines of D integers, each line representing the coordinate of an enemy hero. All numbers in the input has absolute value no more than 10000. Notice that two enemy heroes may have same coordinate.
2 4 2 0 0 0 1 1 0 1 1 3 2 0 0 3 4 5 5
7 4
Migrated from old NTUJ.
kelvin
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