Score : $400$ points
We have $N$ balls. The $i$-th ball has an integer $A_i$ written on it.
For each $k=1, 2, ..., N$, solve the following problem and print the answer.
Input is given from Standard Input in the following format:
$N$ $A_1$ $A_2$ $...$ $A_N$
For each $k=1,2,...,N$, print a line containing the answer.
5 1 1 2 1 2
2 2 3 2 3
Consider the case $k=1$ for example. The numbers written on the remaining balls are $1,2,1,2$.
From these balls, there are two ways to choose two distinct balls so that the integers written on them are equal.
Thus, the answer for $k=1$ is $2$.
4 1 2 3 4
0 0 0 0
No two balls have equal numbers written on them.
5 3 3 3 3 3
6 6 6 6 6
Any two balls have equal numbers written on them.
8 1 2 1 4 2 1 4 1
5 7 5 7 7 5 7 5