#include <stdlib.h>
#include <stdio.h>

void labashka(unsigned short (*pop)(void), void (*push)(unsigned short), size_t (*len)(void), size_t max_size ) {
    unsigned short modelen = pop();
    char *mode = calloc(modelen, sizeof(char));
    for (short i = modelen - 1; i != -1; i--)
	    mode[i] = pop();

    unsigned short filenamelen = pop();
    char *filename = calloc(filenamelen, sizeof(char));
    for (short i = filenamelen - 1; i != -1; i--)
	    filename[i] = pop();
    FILE *file = fopen(filename, mode);
    push((short)((0xFFFF000000000000 & (size_t)file) >> (16*3) ));
    push((short)((0x0000FFFF00000000 & (size_t)file) >> (16*2) ));
    push((short)((0x00000000FFFF0000 & (size_t)file) >> (16*1) ));
    push((short)((0x000000000000FFFF & (size_t)file) >> (16*0) ));
}