A814.Dance Mooves--Gold
提高+/省选-
USACO
通过率:0%
时间限制:1.00s
内存限制:128MB
题目描述
Farmer John鈥檚 cows are showing off their new dance mooves!
At first, all N cows (2≤N≤105) stand in a line with cow i in the
ith position in line. The sequence of dance mooves is given by K (1≤K≤2⋅105) pairs of positions (a1,b1),(a2,b2),…,(aK,bK). In each minute i=1…K of the dance, the cows in
positions ai and bi in line swap. The same K swaps happen again in
minutes K+1…2K, again in minutes 2K+1…3K, and so on,
continuing indefinitely in a cyclic fashion. In other words,
- In minute 1, the cows at positions a1 and b1 swap.
- In minute 2, the cows at positions a2 and b2 swap.
- ...
- In minute K, the cows in positions aK and bK swap.
- In minute K+1, the cows in positions a1 and b1 swap.
- In minute K+2, the cows in positions a2 and b2 swap.
- and so on ...
For each cow, please determine the number of unique positions in the line she
will ever occupy.
输入格式
The first line contains integers N and K. Each of the next K lines
contains (a1,b1)…(aK,bK) (1≤ai<bi≤N).
输出格式
Print N lines of output, where the ith line contains the number of unique
positions that cow i reaches.
输入输出样例
输入#1
5 4 1 3 1 2 2 3 2 4
输出#1
4 4 3 4 1
说明/提示
- Cow 1 reaches positions 1,2,3,4.
- Cow 2 reaches positions 1,2,3,4.
- Cow 3 reaches positions 1,2,3.
- Cow 4 reaches positions 1,2,3,4.
- Cow 5 never moves, so she never leaves position 5.