#D10294. Decayed Bridges
Decayed Bridges
Decayed Bridges
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.
Examples
Input
4 5 1 2 3 4 1 3 2 3 1 4
Output
0 0 4 5 6
Input
6 5 2 3 1 2 5 6 3 4 4 5
Output
8 9 12 14 15
Input
2 1 1 2
Output
1
inputFormat
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
outputFormat
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.
Examples
Input
4 5 1 2 3 4 1 3 2 3 1 4
Output
0 0 4 5 6
Input
6 5 2 3 1 2 5 6 3 4 4 5
Output
8 9 12 14 15
Input
2 1 1 2
Output
1
样例
6 5
2 3
1 2
5 6
3 4
4 5
8
9
12
14
15
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