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A11833 | Team Players

时间限制1s
内存限制256MB
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题目描述

There are $n$ players numbered from $0$ to $n-1$ with ranks. The $i$ -th player has rank $i$ .

Players can form teams: the team should consist of three players and no pair of players in the team should have a conflict. The rank of the team is calculated using the following algorithm: let $i$ , $j$ , $k$ be the ranks of players in the team and $i < j < k$ , then the rank of the team is equal to $A \cdot i + B \cdot j + C \cdot k$ .

You are given information about the pairs of players who have a conflict. Calculate the total sum of ranks over all possible valid teams modulo $2^{64}$ .

输入格式

The first line contains two space-separated integers $n$ and $m$ ( $3 \le n \le 2 \cdot 10^5$ , $0 \le m \le 2 \cdot 10^5$ ) — the number of players and the number of conflicting pairs.

The second line contains three space-separated integers $A$ , $B$ and $C$ ( $1 \le A, B, C \le 10^6$ ) — coefficients for team rank calculation.

Each of the next $m$ lines contains two space-separated integers $u_i$ and $v_i$ ( $0 \le u_i, v_i < n, u_i \neq v_i$ ) — pair of conflicting players.

It's guaranteed that each unordered pair of players appears in the input file no more than once.

输出格式

Print single integer — the total sum of ranks over all possible teams modulo $2^{64}$ .

输入输出样例

输入 #1
4 0
2 3 4
输出 #1
64
输入 #2
4 1
2 3 4
1 0
输出 #2
38
输入 #3
6 4
1 5 3
0 3
3 5
5 4
4 3
输出 #3
164
C++ 编辑器
输入
输出