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

void labashka(unsigned short (*pop)(void), void (*push)(unsigned short), size_t (*len)(void), size_t max_size ) {
	FILE *file = NULL;
	file = (void*)((size_t)(pop()) << (16*0) | (size_t)file);
	file = (void*)((size_t)(pop()) << (16*1) | (size_t)file);
	file = (void*)((size_t)(pop()) << (16*2) | (size_t)file);
	file = (void*)((size_t)(pop()) << (16*3) | (size_t)file);
	push(fclose(file));
}