menit = int(input())
hari = menit // 1440
sisa = menit % 1440
jam = sisa // 60
sisa_menit = sisa % 60
denda_menit = sisa_menit // 5
total_denda = (hari * 800000) + (jam * 25000) + (denda_menit * 1000)
print(total_denda)
bWVuaXQgPSBpbnQoaW5wdXQoKSkKCmhhcmkgPSBtZW5pdCAvLyAxNDQwCnNpc2EgPSBtZW5pdCAlIDE0NDAKCmphbSA9IHNpc2EgLy8gNjAKc2lzYV9tZW5pdCA9IHNpc2EgJSA2MAoKZGVuZGFfbWVuaXQgPSBzaXNhX21lbml0IC8vIDUKCnRvdGFsX2RlbmRhID0gKGhhcmkgKiA4MDAwMDApICsgKGphbSAqIDI1MDAwKSArIChkZW5kYV9tZW5pdCAqIDEwMDApCgpwcmludCh0b3RhbF9kZW5kYSk=