int calHeight(TreeNode* root) {
if (root == NULL) return 0;
//if (root->left == NULL && root->right == NULL)
//return 1;
//else
return (1 + max(calHeight(root->left), calHeight(root->right)));
}
bool isBalanced(TreeNode* root) {
if (root == NULL) return true;
if (abs(calHeight(root->left) - calHeight(root->right)) <= 1){
return (isBalanced(root->left) && isBalanced(root->right));
}
else
return false;
}
int calHeight(NODE *r) {
if (r == NULL) {
return 0;
}
int height;
height = max(calHeight(r->left), calHeight(r->right)) + 1;
return height;
}
void SrTerrain::buildMesh(IDirect3DDevice9* pd3dDevice)
{
int count = mParam.mNumCols * mParam.mNumRows;
float *h = new float[count];
D3DXVECTOR3* n = new D3DXVECTOR3[count];
D3DXVECTOR3* m = new D3DXVECTOR3[count];
D3DXVECTOR2* coords = new D3DXVECTOR2[count];
memset(h, 0, sizeof(float) * count);
calHeight(h);
calHeightMap(h, m);
calNormal(m, n);
calTextureCoord(coords);
TERRAINVERTEX* v;
int numVerts = (mParam.mNumRows - 1) * (mParam.mNumCols - 1);
pd3dDevice->CreateVertexBuffer(6 * numVerts * sizeof(TERRAINVERTEX), 0, D3DFVF_TERRAIN_VERTEX, D3DPOOL_MANAGED, &mVB, NULL );
mVB->Lock( 0, 6 * numVerts * sizeof(TERRAINVERTEX), (void**)&v, 0 );
calVertes(v, m, n, coords);
mVB->Unlock();
delete []h;
delete []n;
delete []m;
delete []coords;
}
int main(){
char str[maxn];
int i, m = 30, ans, len;
while(scanf("%s",str)!=EOF){
len = strlen(str);
for(i=0;i<=len;i++) num[i]=str[i]-'a'+1;
num[len]=0;
da(num, len + 1, m);
calHeight(num, len);
}
return 0;
}
int main(){
int k;
char str1[maxn], str2[maxn];
while(~scanf("%d", &k)){
if(k==0) break;
scanf("%s%s",str1, str2);
len1 = strlen(str1);
len = strlen(str2);
for(int i = 0; i < len1; i++){
r[i] = str1[i];
}
r[len1] = '$';
for(int i = 0; i < len; i++){
r[i+len1+1] = str2[i];
}
len += len1+1;
r[len] = 0;
da(r, len+1, 150);
calHeight(r, len);
long long res = 0, sum;
int head, tail;
for(int i = 1; i <= len; i++){
if(height[i] < k){
sum = 0;
head = tail = maxn;
}
else{
for(int j = head; j < tail; j++){
if(lcp[j] > height[i]){
sum -= lcp[j]-height[i];
lcp[j] = height[i];
}
else break;
}
if(sa[i-1] > len1){
lcp[--head] = height[i];
sum += lcp[head]-k+1;
}
if(sa[i] < len1) res += sum;
}
}
for(int i = 1; i <= len; i++){
if(height[i] < k){
sum = 0;
head = tail = maxn;
}
else{
for(int j = head; j < tail; j++){
if(lcp[j] > height[i]){
sum -= lcp[j]-height[i];
lcp[j] = height[i];
}
else break;
}
if(sa[i-1] < len1){
lcp[--head] = height[i];
sum += lcp[head]-k+1;
}
if(sa[i] > len1) res += sum;
}
}
printf("%I64d\n", res);
}
}
NODE * tmap_insertR(TMAP *t, NODE *r, NODE *parent, char * name, double val, char side, char parentBalance, int depth){
//-------------
//need to check whether is size-balanced each time insert
char balanced;
balanced = Balance(r, name, val);
//------------
NODE *leaf;
depth++;
if(r == NULL){
leaf = (NODE *)malloc(sizeof(NODE));
leaf->left = NULL;
leaf->right = NULL;
leaf->nameVal.name = name;
leaf->nameVal.value = val;
(*t)->size++;
if (depth > (*t)->height) {
(*t)->height = depth;
}
((*t)->numOfInsertion)++;
tableInsert((*t)->hashTable, name, leaf, h_One);
return leaf;
}
// the tie is broken by the name
// (by standard alphabetical order)
if(r->nameVal.value == val){
if(strcmp(r->nameVal.name, name) > 0){
r->left = tmap_insertR(t, r->left, r, name, val, 0, balanced, depth);
}else{
r->right = tmap_insertR(t, r->right, r, name, val, 1, balanced, depth);
}
} else if(val < r->nameVal.value){
r->left = tmap_insertR(t, r->left, r, name, val, 0, balanced, depth);
} else {
r->right = tmap_insertR(t, r->right, r, name, val, 1, balanced, depth);
}
// if the nearest node is not found and the sub-tree is not balanced
if (parentBalance == BALANCED && balanced == INBALANCED) {
((*t)->numOfRebalance)++;
if (parent != NULL) { // if non-root subtree is balanced
if (side == 0) {
parent->left = reBalance(r);
(*t)->height = calHeight((*t)->root);
return parent->left;
} else if (side == 1) {
parent->right = reBalance(r);
(*t)->height = calHeight((*t)->root);
return parent->right;
}
} else {
(*t)->root = reBalance(r);
(*t)->height = calHeight((*t)->root);
return (*t)->root;
}
} else {
return r;
}
}// end of tmap_insertR