int main() {
int i;
int RES;
int L, T, O;
int A, B, C;
char str[5];
scanf("%d%d%d", &L, &T, &O);
build_tree(1, L, 1);
while(O--) {
scanf("%s", str);
if(str[0] == 'C') {
scanf("%d%d%d", &A, &B, &C);
if (A <= B)
change_tree(A, B, 1, L, C, 1);
else
change_tree(B, A, 1, L, C, 1);
}
else {
scanf("%d%d", &A, &B);
RES = num = 0;
if (A <= B)
search_tree(A, B, 1, L, 1);
else
search_tree(B, A, 1, L, 1);
for(i = 0; i < T; i++) {
if(num & 1)
RES++;
num >>= 1;
}
printf("%d\n", RES);
}
}
return 0;
}
void change_tree (BiTree * root)
{
BiTree * tmp;
tmp = (BiTree *)malloc(sizeof(BiTree));
if (root == NULL)
{
return ;
}
if (root != NULL)
{
tmp = root->Lchild;
root->Lchild = root->Rchild;
root->Rchild = tmp;
}
change_tree(root->Lchild);
change_tree(root->Rchild);
}
void change_tree(int left, int right, int tleft, int tright, int col, int i) {
if(left == tleft && right == tright) {
result[i][0] = 1 << (col - 1);
result[i][1] = col;
return ;
}
if(result[i][1]) {
result[i << 1][1] = result[i << 1 | 1][1] = result[i][1];
result[i << 1][0] = 1 << (result[i << 1][1] - 1);
result[i << 1 | 1][0] = 1 << (result[i << 1 | 1][1] - 1);
result[i][1] = 0;
}
int mid = (tleft + tright) >> 1;
if(right <= mid)
change_tree(left, right, tleft, mid, col, i << 1);
else if(left >= mid + 1)
change_tree(left, right, mid + 1, tright, col, i << 1 | 1);
else {
change_tree(left, mid, tleft, mid, col, i << 1);
change_tree(mid + 1, right, mid + 1, tright, col, i << 1 | 1);
}
result[i][0] = result[i << 1][0] | result[i << 1 | 1][0];
}