! yukicoder My Practice
! author: Leonardone @ NEETSDKASU
 
      PROGRAM yukicoder
          INTEGER :: n, a(100000), ans, mx
          
          READ(*,*) n
          READ(*,*) a(1:n)
          
          mx = a(1)
          ans = 0
          
          DO i = 2, n
              IF (a(i) > mx) THEN
                  mx = a(i)
              ELSE
                  IF (a(i) > ans .and. a(i) < mx) ans = a(i)
              END IF
          END DO
          
          PRINT '(I0)', ans
 
          STOP
      END PROGRAM yukicoder