import java.util.Scanner; public class MaxTraceOfSubMatrix { static int n; public static void main(String[] args) { Scanner scan= new Scanner(System.in); int t=scan.nextInt(); for(int t_ =0; t_trace) trace=temp; } System.out.println(trace); } } public static int maxTrace(int[][] a,int k) { int trace =Integer.MIN_VALUE,temp; for(int i=0 ; itrace) trace=temp; } } return trace; } }