Given an array A of length N, perform Q queries of 2 types in it
Query 1 — L R given, flip signs of array elements (positive to negetive and vice versa) from L to R
Query 2 — L R given, print index of first negetive element in L to R
Constraints —
N,Q <=2 * 10 ^ 5
-1e8 <= A[i] <= 1e8
Sorry for poor English
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