codeforces#P1004F. Sonya and Bitwise OR
Sonya and Bitwise OR
Description
Sonya has an array $a_1, a_2, \ldots, a_n$ consisting of $n$ integers and also one non-negative integer $x$. She has to perform $m$ queries of two types:
- $1$ $i$ $y$: replace $i$-th element by value $y$, i.e. to perform an operation $a_{i}$ := $y$;
- $2$ $l$ $r$: find the number of pairs ($L$, $R$) that $l\leq L\leq R\leq r$ and bitwise OR of all integers in the range $[L, R]$ is at least $x$ (note that $x$ is a constant for all queries).
Can you help Sonya perform all her queries?
Bitwise OR is a binary operation on a pair of non-negative integers. To calculate the bitwise OR of two numbers, you need to write both numbers in binary notation. The result is a number, in binary, which contains a one in each digit if there is a one in the binary notation of at least one of the two numbers. For example, $10$ OR $19$ = $1010_2$ OR $10011_2$ = $11011_2$ = $27$.
The first line contains three integers $n$, $m$, and $x$ ($1\leq n, m\leq 10^5$, $0\leq x<2^{20}$) — the number of numbers, the number of queries, and the constant for all queries.
The second line contains $n$ integers $a_1, a_2, \ldots, a_n$ ($0\leq a_i<2^{20}$) — numbers of the array.
The following $m$ lines each describe an query. A line has one of the following formats:
- $1$ $i$ $y$ ($1\leq i\leq n$, $0\leq y<2^{20}$), meaning that you have to replace $a_{i}$ by $y$;
- $2$ $l$ $r$ ($1\leq l\leq r\leq n$), meaning that you have to find the number of subarrays on the segment from $l$ to $r$ that the bitwise OR of all numbers there is at least $x$.
For each query of type 2, print the number of subarrays such that the bitwise OR of all the numbers in the range is at least $x$.
Input
The first line contains three integers $n$, $m$, and $x$ ($1\leq n, m\leq 10^5$, $0\leq x<2^{20}$) — the number of numbers, the number of queries, and the constant for all queries.
The second line contains $n$ integers $a_1, a_2, \ldots, a_n$ ($0\leq a_i<2^{20}$) — numbers of the array.
The following $m$ lines each describe an query. A line has one of the following formats:
- $1$ $i$ $y$ ($1\leq i\leq n$, $0\leq y<2^{20}$), meaning that you have to replace $a_{i}$ by $y$;
- $2$ $l$ $r$ ($1\leq l\leq r\leq n$), meaning that you have to find the number of subarrays on the segment from $l$ to $r$ that the bitwise OR of all numbers there is at least $x$.
Output
For each query of type 2, print the number of subarrays such that the bitwise OR of all the numbers in the range is at least $x$.
Samples
4 8 7
0 3 6 1
2 1 4
2 3 4
1 1 7
2 1 4
2 1 3
2 1 1
1 3 0
2 1 4
5
1
7
4
1
4
5 5 7
6 0 3 15 2
2 1 5
1 4 4
2 1 5
2 3 5
2 1 4
9
7
2
4
Note
In the first example, there are an array [$0$, $3$, $6$, $1$] and queries:
- on the segment [$1\ldots4$], you can choose pairs ($1$, $3$), ($1$, $4$), ($2$, $3$), ($2$, $4$), and ($3$, $4$);
- on the segment [$3\ldots4$], you can choose pair ($3$, $4$);
- the first number is being replacing by $7$, after this operation, the array will consist of [$7$, $3$, $6$, $1$];
- on the segment [$1\ldots4$], you can choose pairs ($1$, $1$), ($1$, $2$), ($1$, $3$), ($1$, $4$), ($2$, $3$), ($2$, $4$), and ($3$, $4$);
- on the segment [$1\ldots3$], you can choose pairs ($1$, $1$), ($1$, $2$), ($1$, $3$), and ($2$, $3$);
- on the segment [$1\ldots1$], you can choose pair ($1$, $1$);
- the third number is being replacing by $0$, after this operation, the array will consist of [$7$, $3$, $0$, $1$];
- on the segment [$1\ldots4$], you can choose pairs ($1$, $1$), ($1$, $2$), ($1$, $3$), and ($1$, $4$).
In the second example, there are an array [$6$, $0$, $3$, $15$, $2$] are queries:
- on the segment [$1\ldots5$], you can choose pairs ($1$, $3$), ($1$, $4$), ($1$, $5$), ($2$, $4$), ($2$, $5$), ($3$, $4$), ($3$, $5$), ($4$, $4$), and ($4$, $5$);
- the fourth number is being replacing by $4$, after this operation, the array will consist of [$6$, $0$, $3$, $4$, $2$];
- on the segment [$1\ldots5$], you can choose pairs ($1$, $3$), ($1$, $4$), ($1$, $5$), ($2$, $4$), ($2$, $5$), ($3$, $4$), and ($3$, $5$);
- on the segment [$3\ldots5$], you can choose pairs ($3$, $4$) and ($3$, $5$);
- on the segment [$1\ldots4$], you can choose pairs ($1$, $3$), ($1$, $4$), ($2$, $4$), and ($3$, $4$).