User contributions

Search for contributions
 
 
      
 
   

  • 18:42, 23 November 2015 (diff | hist) . . (+274). . N 1971 IMO Problems/Problem 6(Created page with "Let A = (aij), where i, j = 1, 2, ... , n, be a square matrix with all aij non-negative integers. For each i, j such that aij = 0, the sum of the elements in the ith row and t...")

Invalid username
Login to AoPS