#include "add.h"

int solve1(node* head);

int solve2(node* head);

int solve3(node* head);

int solve4(node* head);

int solve5(node* head);

int solve6(node* head);

int solve7(node* head);

node* solve8(node* head);

node* solve9(node* head);

node* solve10(node* head);