void Insert(char * str)
{
Trie * p = root; int len = strlen(str);
for(int i = 0; i < len; i++) {
int idx = hash(str[i]);
if(!p->child[idx]) p->child[idx] = NewTrie();
p = p->child[idx];
}
p->isword = 1;
}
Trie *
add_Trie(const char *name, Trie **triepp)
{
Trie *curp;
if ( *name == NUL )
{
/* See if name already exists. */
if ( *triepp == TRIE_NULL )
{
/* Name does not exist, make leaf node. */
NewTrie( *triepp );
(*triepp)->l.t_altr = (*triepp)->l.t_next = TRIE_NULL;
(*triepp)->l.t_octp = OCLIST_NULL;
}
else
if ( (*triepp)->n.t_next != TRIE_NULL )
{
/* Name is subset of another name. */
return add_Trie( name, &(*triepp)->n.t_altr );
}
return *triepp;
}
for ( curp = *triepp;
curp != TRIE_NULL && *name != curp->n.t_char;
curp = curp->n.t_altr
)
;
if ( curp == TRIE_NULL )
{
/* No Match, this level, so create new alternate. */
curp = *triepp;
NewTrie( *triepp );
(*triepp)->n.t_altr = curp;
(*triepp)->n.t_char = *name;
(*triepp)->n.t_next = TRIE_NULL;
return add_Trie( ++name, &(*triepp)->n.t_next );
}
else
/* Found matching character. */
return add_Trie( ++name, &curp->n.t_next );
}
void TrieInsert(Trie *pnt,char *s,int len)
{
Trie *temp = pnt;
for(int i=0;i<len;++i)
{
if(temp->son[s[i]-base]==NULL)
temp->son[s[i]-base]=NewTrie();
else
temp->son[s[i]-base]->num++;
temp = temp->son[s[i]-base];
}
temp->terminal = true;
}
/*
## FT.SUGGADD key string score [INCR] [PAYLOAD {payload}]
Add a suggestion string to an auto-complete suggestion dictionary. This is
disconnected from the
index definitions, and leaves creating and updating suggestino dictionaries to
the user.
### Parameters:
- key: the suggestion dictionary key.
- string: the suggestion string we index
- score: a floating point number of the suggestion string's weight
-INCR: if set, we increment the existing entry of the suggestion by the
given
score, instead
of
replacing the score. This is useful for updating the dictionary based on
user queries in
real
time
- PAYLOAD: Add a payload to the suggestion string that will be used as additional information.
### Returns:
Integer reply: the current size of the suggestion dictionary.
*/
int RSSuggestAddCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
if (argc < 4 || argc > 7) {
return RedisModule_WrongArity(ctx);
}
int incr = 0, rv = AC_OK;
RSPayload payload = {0};
ArgsCursor ac = {0};
ArgsCursor_InitRString(&ac, argv + 4, argc - 4);
while (!AC_IsAtEnd(&ac)) {
const char *s = AC_GetStringNC(&ac, NULL);
if (!strcasecmp(s, "INCR")) {
incr = 1;
} else if (!strcasecmp(s, "PAYLOAD")) {
if ((rv = AC_GetString(&ac, (const char **)&payload.data, &payload.len, 0)) != AC_OK) {
return RMUtil_ReplyWithErrorFmt(ctx, "Invalid payload: %s", AC_Strerror(rv));
}
} else {
return RMUtil_ReplyWithErrorFmt(ctx, "Unknown argument `%s`", s);
}
}
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ | REDISMODULE_WRITE);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_EMPTY && RedisModule_ModuleTypeGetType(key) != TrieType) {
return RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
}
RedisModuleString *val = argv[2];
double score;
if ((RedisModule_StringToDouble(argv[3], &score) != REDISMODULE_OK)) {
return RedisModule_ReplyWithError(ctx, "ERR invalid score");
}
/* Create an empty value object if the key is currently empty. */
Trie *tree;
if (type == REDISMODULE_KEYTYPE_EMPTY) {
tree = NewTrie();
RedisModule_ModuleTypeSetValue(key, TrieType, tree);
} else {
tree = RedisModule_ModuleTypeGetValue(key);
}
/* Insert the new element. */
Trie_Insert(tree, val, score, incr, &payload);
RedisModule_ReplyWithLongLong(ctx, tree->size);
RedisModule_ReplicateVerbatim(ctx);
return REDISMODULE_OK;
}
/*
Trie *addTrie(char *name, Trie **triepp)
Insert the name in the trie specified by triepp, if it
doesn't already exist there.
Return pointer to leaf node associated with name.
*/
Trie *
addTrie(char *name, Trie **triepp)
{
Trie *curp;
if (*name == NUL) {
/* End of name, see if name already exists. */
if (*triepp == TRIE_NULL) {
/* Name does not exist, make leaf node. */
NewTrie(*triepp);
(*triepp)->l.t_altr = (*triepp)->l.t_next
= TRIE_NULL;
(*triepp)->l.t_func = NULL_FUNC;
} else if ((*triepp)->n.t_next != TRIE_NULL)
/* Name is subset of another name. */
return addTrie(name, &(*triepp)->n.t_altr);
/* else -- Name already inserted, so do nothing. */
return *triepp;
}
/* Find matching letter, this level. */
for (curp = *triepp;
curp != TRIE_NULL && *name != curp->n.t_char;
curp = curp->n.t_altr
)
;
if (curp == TRIE_NULL) {
/* No Match, this level, so create new alternate. */
curp = *triepp;
NewTrie(*triepp);
(*triepp)->n.t_altr = curp;
(*triepp)->n.t_char = *name;
(*triepp)->n.t_next = TRIE_NULL;
return addTrie(++name, &(*triepp)->n.t_next);
} else
/* Found matching character. */
return addTrie(++name, &curp->n.t_next);
}
int main()
{
int n, m;
while(scanf("%d %d", &m, &n) != EOF) {
idx = 0;
root = NewTrie();
while(m--) {
scanf("%s", str);
Insert(str);
}
Fail();
memset(M.mat, 0, sizeof(M.mat));
for(int i = 0; i < idx; i++)
for(int j = 0;j < 4; j++) {
Trie * son = t[i].child[j];
if(!son->isword && !t[i].isword) M.mat[i][son->id] ++;
}
M = M ^ n;
ll ans = 0;
for(int i = 0; i < idx; i++) ans = (ans + M.mat[0][i]) % MOD;
printf("%I64d\n", ans);
}
return 0;
}
RS_Suggestions *RS_SuggestionsCreate() {
#define SUGGESTIONS_ARRAY_INITIAL_SIZE 10
RS_Suggestions *ret = calloc(1, sizeof(RS_Suggestions));
ret->suggestionsTrie = NewTrie();
return ret;
}
