code = []

code.append('format elf64 executable 3')
code.append('entry start')

code.append('read:')
code.append('xor rax, rax')
code.append('xor rdi, rdi')
code.append('mov rsi, int_buffer')
code.append('mov rdx, 20')
code.append('syscall')
code.append('xor rcx, rcx')
code.append('mov cl, [int_buffer + rax - 1]')
code.append('cmp rcx, 10')
code.append('jne newlineskip')
code.append('dec rax')
code.append('newlineskip:')
code.append('mov rsi, rax')
code.append('xor rax, rax')
code.append('cmp rsi, 0')
code.append('je skipread')
code.append('xor rcx, rcx')
code.append('mov rdi, 10')
code.append('keepreading:')
code.append('mul rdi')
code.append('mov dl, [int_buffer + rcx]')
code.append('sub rdx, 48')
code.append('add rax, rdx')
code.append('inc rcx')
code.append('cmp rcx, rsi')
code.append('jl keepreading')
code.append('skipread:')
code.append('ret')

code.append('print:')
code.append('mov [rsp - 8], rbx')
code.append('mov rax, [rsp + 8]')
code.append('mov rdi, 10')
code.append('xor rcx, rcx')
code.append('print_loop0:')
code.append('mov [int_buffer + rcx], 48')
code.append('inc rcx')
code.append('cmp rcx, 20')
code.append('jl print_loop0')
code.append('xor rbx, rbx')
code.append('xor rdx, rdx')
code.append('print_loop1:')
code.append('div rdi')
code.append('dec rcx')
code.append('inc rbx')
code.append('add [int_buffer + rcx], dl')
code.append('xor rdx, rdx')
code.append('cmp rax, 0')
code.append('jg print_loop1')
code.append('mov rax, 1')
code.append('mov rdi, 1')
code.append('lea rsi, [int_buffer + rcx]')
code.append('mov rdx, rbx')
code.append('syscall')
code.append('mov [int_buffer], 10')
code.append('mov rax, 1')
code.append('mov rdi, 1')
code.append('mov rsi, int_buffer')
code.append('mov rdx, 1')
code.append('syscall')
code.append('mov rbx, [rsp - 8]')
code.append('ret')

code.append('start:')
loop_stack = []
loop_index = -1
with open('input.stk', 'r') as f:
    text = f.read()
    words = text.replace('\n', ' ').strip().split(' ')
    for word in words:
        if word.isdecimal():
            code.append('push ' + word)
        elif word == '+':
            code.append('pop rax')
            code.append('pop rdi')
            code.append('add rax, rdi')
            code.append('push rax')
        elif word == '-':
            code.append('pop rdi')
            code.append('pop rax')
            code.append('sub rax, rdi')
            code.append('push rax')
        elif word == '++':
            code.append('pop rax')
            code.append('inc rax')
            code.append('push rax')
        elif word == '--':
            code.append('pop rax')
            code.append('dec rax')
            code.append('push rax')
        elif word == '*':
            code.append('pop rax')
            code.append('pop rdi')
            code.append('mul rdi')
            code.append('push rax')
        elif word == '!':
            code.append('pop rax')
        elif word == '~':
            code.append('pop rax')
            code.append('push rax')
            code.append('push rax')
        elif word == '.':
            code.append('call print')
            code.append('pop rax')
        elif word == ',':
            code.append('call read')
            code.append('push rax')
        elif word == '[':
            loop_index += 1
            loop_stack.append(loop_index)
            code.append('l' + str(loop_index) + ':')
            code.append('cmp DWORD [rsp], 0')
            code.append('je e' + str(loop_index))
        elif word == ']':
            loop_end = loop_stack.pop()
            code.append('jmp l' + str(loop_end))
            code.append('e' + str(loop_end) + ':')
            code.append('pop rax')

code.append('mov rax, 60')
code.append('mov rdi, 0')
code.append('syscall')
code.append('segment writable')
code.append('int_buffer rb 20')

for line in code:
    print(line)