#ifndef _STRUCTS_H
#define _STRUCTS_H
struct item {
	double p;
	double w;
};

struct data {
	long int N;
	struct item * items;
	double allp;
	double allw;
};

struct front_item {
	struct item i;
	struct front_item * next;
	struct front_item * prev;
};
#endif