// Nested For Loop Demo with a Grid, M.S. Branicky, 09/19-20/2007

public class Grid {
   public static void main (String[] args) {
    
      int i, j;
    
      for (i=1; i<=31; i++) {

         for (j=1; j<=89; j++) {
            if ((i%2==0) && (j%2==0)) {
               System.out.print(" ");
            }    // end if both even
            else {
               if ((i%2==1) && (j%2==1)) {
                  System.out.print("+");
               } // end if of both odd
               else {
                  if (i%2==1) {
                     System.out.print("-");
                  }
                  else {
                     System.out.print("|");
                  }
               }  // end else of both odd
            }     // end else of both even
         }        // end for (j)

         System.out.println();

      }           // end for (i)
   }              // end main
}                 // end class