a=int(input())
if a>=200 and a<=299:
    print(a+50)
elif a>=300 and a<=499:
    print(a+100)
elif a>=500:
    print(a+200)
else:
    print(a)
/**************************************************************
	Problem: 1391
	User: admin
	Language: Python
	Result: Accepted
	Time:298 ms
	Memory:34244 kb
****************************************************************/