The algorithm as :
Step 1: Read N.
Step 2 : Let ctr = 1.
Step 3: Read Num.
Step 4 : large = Num.
Step 5: Read next Num.
Step 6 : ctr = ctr + 1.
Step 7 : If (Num > large) then large = Num.
Step 8 : If (ctr < = N) then repeat steps 5 and 6.
Step 9: Print large.
Step 10: End.