100571: [AtCoder]ABC057 B - Checkpoints
Description
Score : $200$ points
Problem Statement
There are $N$ students and $M$ checkpoints on the $xy$-plane.
The coordinates of the $i$-th student $(1 \leq i \leq N)$ is $(a_i,b_i)$, and the coordinates of the checkpoint numbered $j$ $(1 \leq j \leq M)$ is $(c_j,d_j)$.
When the teacher gives a signal, each student has to go to the nearest checkpoint measured in Manhattan distance.
The Manhattan distance between two points $(x_1,y_1)$ and $(x_2,y_2)$ is $|x_1-x_2|+|y_1-y_2|$.
Here, $|x|$ denotes the absolute value of $x$.
If there are multiple nearest checkpoints for a student, he/she will select the checkpoint with the smallest index.
Which checkpoint will each student go to?
Constraints
- $1 \leq N,M \leq 50$
- $-10^8 \leq a_i,b_i,c_j,d_j \leq 10^8$
- All input values are integers.
Input
The input is given from Standard Input in the following format:
$N$ $M$ $a_1$ $b_1$ $:$ $a_N$ $b_N$ $c_1$ $d_1$ $:$ $c_M$ $d_M$
Output
Print $N$ lines.
The $i$-th line $(1 \leq i \leq N)$ should contain the index of the checkpoint for the $i$-th student to go.
Sample Input 1
2 2 2 0 0 0 -1 0 1 0
Sample Output 1
2 1
The Manhattan distance between the first student and each checkpoint is:
- For checkpoint $1$: $|2-(-1)|+|0-0|=3$
- For checkpoint $2$: $|2-1|+|0-0|=1$
The nearest checkpoint is checkpoint $2$. Thus, the first line in the output should contain $2$.
The Manhattan distance between the second student and each checkpoint is:
- For checkpoint $1$: $|0-(-1)|+|0-0|=1$
- For checkpoint $2$: $|0-1|+|0-0|=1$
When there are multiple nearest checkpoints, the student will go to the checkpoint with the smallest index. Thus, the second line in the output should contain $1$.
Sample Input 2
3 4 10 10 -10 -10 3 3 1 2 2 3 3 5 3 5
Sample Output 2
3 1 2
There can be multiple checkpoints at the same coordinates.
Sample Input 3
5 5 -100000000 -100000000 -100000000 100000000 100000000 -100000000 100000000 100000000 0 0 0 0 100000000 100000000 100000000 -100000000 -100000000 100000000 -100000000 -100000000
Sample Output 3
5 4 3 2 1