#P9994. Plane Points Operations
Plane Points Operations
Plane Points Operations
Given n distinct points on the plane with coordinates \( (x_i, y_i) \) for \( i=1,2,\dots,n \) and an initial weight \( v_i \) for each point, you need to process m operations. There are two types of operations:
- Modification Operation: Given an integer \( X \), update the weight \( v_i \) of every point satisfying \( x_i = X \) to \( v_i^2 \).
- Query Operation: Given an integer \( Y \), compute the sum of weights \( v_i \) for all points satisfying \( y_i = Y \), and output the result modulo \( 10^9+7 \).
All formulas are given in \( \LaTeX \) format. The operations are processed in order.
inputFormat
The first line contains two integers n
and m
.
The next n
lines each contain three integers xi
, yi
, and vi
, representing the coordinate and the initial weight of the i-th point.
The following m
lines describe the operations. Each line begins with an integer t
representing the type of the operation:
- If
t = 1
, it is a modification operation. It is followed by an integerX
. - If
t = 2
, it is a query operation. It is followed by an integerY
.
All numbers are space-separated.
outputFormat
For each query operation, output a single line containing the sum of weights of the points with y
equal to the given value, modulo \( 10^9+7 \).
sample
3 4
1 2 3
2 2 4
1 3 5
2 2
1 1
2 2
2 3
7
13
25
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