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Quick Summary

Process sequential count and flip operations on a binary string.
Track global inversion state without mutating the underlying data.
Use precomputed prefix sums to answer range queries in constant time.

What This Tests

Prefix Sum arrays
State tracking and parity optimization
Efficient simulation versus naive mutation
Complexity analysis under large constraints

Common Patterns

Prefix Sum

Simulation

Accepted

13/37

Acceptance Rate35.1%

Test Cases

Input

binaryString =

requests =

Output

Expected