Problem Statement
There are $N$ islands and $M$ bridges.
The $i$-th bridge connects the $A_i$-th and $B_i$-th islands bidirectionally.
Initially, we can travel between any two islands using some of these bridges.
However, the results of a survey show that these bridges will all collapse because of aging, in the order from the first bridge to the $M$-th bridge.
Let the inconvenience be the number of pairs of islands $(a, b)$ ($a < b$) such that we are no longer able to travel between the $a$-th and $b$-th islands using some of the bridges remaining.
For each $i$ $(1 \leq i \leq M)$, find the inconvenience just after the $i$-th bridge collapses.
Constraints
- All values in input are integers.
$2 \leq N \leq 10^5$$1 \leq M \leq 10^5$$1 \leq A_i < B_i \leq N$- All pairs
$(A_i, B_i)$are distinct. - The inconvenience is initially
$0$.
Input
Input is given from Standard Input in the following format:
N M
A_1 B_1
A_2 B_2
\vdots
A_M B_M
Output
In the order $i = 1, 2, ..., M$, print the inconvenience just after the $i$-th bridge collapses. Note that the answer may not fit into a $32$-bit integer type.
样例
4 5
1 2
3 4
1 3
2 3
1 4
0
0
4
5
6
6 5
2 3
1 2
5 6
3 4
4 5
8
9
12
14
15
2 1
1 2
1
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