Codeforces Round 121 (Div. 1)
D
Metro Scheme
Codeforces
2700
原题
← CE →
翻译中…

Berland is very concerned with privacy, so almost all plans and blueprints are secret. However, a spy of the neighboring state managed to steal the Bertown subway scheme.

翻译中…

The Bertown Subway has $*n*$ stations, numbered from $1$ to $*n*$, and $*m*$ bidirectional tunnels connecting them. All Bertown Subway consists of lines. To be more precise, there are two types of lines: circular and radial.

翻译中…

A radial line is a sequence of stations $*v*_{1}, ..., *v*_{*k*}$ $(*k* > 1)$, where stations $*v*_{*i*}$ and $*v*_{*i* + 1}$ $(*i* < *k*)$ are connected by a tunnel and no station occurs in the line more than once ($*v*_{*i*} ≠ *v*_{*j*}$ for $*i* ≠ *j*$).

翻译中…

A loop line is a series of stations, $*v*_{1}, ..., *v*_{*k*}$ $(*k* > 2)$, where stations $*v*_{*i*}$ и $*v*_{*i* + 1}$ are connected by a tunnel. In addition, stations $*v*_{1}$ and $*v*_{*k*}$ are also connected by a tunnel. No station is occurs in the loop line more than once.

翻译中…

Note that a single station can be passed by any number of lines.

翻译中…

According to Berland standards, there can't be more than one tunnel between two stations and each tunnel belongs to exactly one line. Naturally, each line has at least one tunnel. Between any two stations there is the way along the subway tunnels. In addition, in terms of graph theory, a subway is a vertex cactus: if we consider the subway as a graph in which the stations are the vertexes and the edges are tunnels, then each vertex lies on no more than one simple cycle.

翻译中…

Unfortunately, scheme, stolen by the spy, had only the stations and the tunnels. It was impossible to determine to which line every tunnel corresponds. But to sabotage successfully, the spy needs to know what minimum and maximum number of lines may be in the Bertown subway.

翻译中…

Help him!

翻译中…

Input

翻译中…

The first line contains two integers $*n*$ and $*m*$ ($1 ≤ *n* ≤ 10^{5}$, $0 ≤ *m* ≤ 3·10^{5}$) — the number of stations and the number of tunnels, correspondingly.

翻译中…

Each of the next $*m*$ lines contain two integers — the numbers of stations connected by the corresponding tunnel. The stations are numbered with integers from $1$ to $*n*$.

翻译中…

It is guaranteed that the graph that corresponds to the subway has no multiple edges or loops, it is connected and it is a vertex cactus.

翻译中…

Output

翻译中…

Print two numbers — the minimum and maximum number of lines correspondingly.

翻译中…

Note

翻译中…

The subway scheme with minimum possible number of lines for the second sample is:

翻译中…

image

翻译中…

样例

Input #1
3 3
1 2
2 3
3 1
Output #1
1 3
InputCopy OutputCopy
Input #2
8 8
1 2
2 3
3 4
4 5
6 4
4 7
7 2
2 8
Output #2
2 8
InputCopy OutputCopy
Input #3
6 6
1 2
2 3
2 5
5 6
3 4
3 5
Output #3
3 6
InputCopy OutputCopy
题目信息
题号
191D
时间限制
2 s
内存限制
256 MB
标签
图论
贪心

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。