pref
An n-1xn matrix, with each column representing the cardinal
utilities of each agent over matches with the other agents, so that, e.g.,
if element (4, 6) of this matrix is 2, then agent 4 ranks agent 2 6th. The
matrix accepts either 0-based indexing (C++ s
utils
An n-1xn matrix, each column representing ordinal preferences
of each agent over agents 1, 2, ..., i-1, i+1, i+2, ... n. For example, if
element (4, 6) of this matrix is 2, then agent 4 gets utility 2 from agent
6.