103462: [Atcoder]ABC346 C - Σ
Memory Limit:256 MB
Time Limit:2 S
Judge Style:Text Compare
Creator:
Submit:14
Solved:0
Description
Score: $250$ points
Problem Statement
You are given a sequence of positive integers $A=(A_1,A_2,\dots,A_N)$ of length $N$ and a positive integer $K$.
Find the sum of the integers between $1$ and $K$, inclusive, that do not appear in the sequence $A$.
Constraints
- $1\leq N \leq 2\times 10^5$
- $1\leq K \leq 2\times 10^9$
- $1\leq A_i \leq 2\times 10^9$
- All input values are integers.
Input
The input is given from Standard Input in the following format:
$N$ $K$ $A_1$ $A_2$ $\dots$ $A_N$
Output
Print the answer.
Sample Input 1
4 5 1 6 3 1
Sample Output 1
11
Among the integers between $1$ and $5$, three numbers, $2$, $4$, and $5$, do not appear in $A$.
Thus, print their sum: $2+4+5=11$.
Sample Input 2
1 3 346
Sample Output 2
6
Sample Input 3
10 158260522 877914575 24979445 623690081 262703497 24979445 1822804784 1430302156 1161735902 923078537 1189330739
Sample Output 3
12523196466007058
Input
Output
得分:250分
问题描述
给你一个长度为N的正整数序列A=$(A_1,A_2,\dots,A_N)$和一个正整数K。
找出1到K之间(包括1和K)没有出现在序列A中的整数的和。
限制条件
- $1\leq N \leq 2\times 10^5$
- $1\leq K \leq 2\times 10^9$
- $1\leq A_i \leq 2\times 10^9$
- 所有输入值都是整数。
输入
输入将从标准输入按以下格式给出:
$N$ $K$ $A_1$ $A_2$ $\dots$ $A_N$
输出
打印答案。
样例输入1
4 5 1 6 3 1
样例输出1
11
在1到5之间的整数中,有三个数字,2、4和5,没有出现在A中。
因此,打印它们的和:$2+4+5=11$。
样例输入2
1 3 346
样例输出2
6
样例输入3
10 158260522 877914575 24979445 623690081 262703497 24979445 1822804784 1430302156 1161735902 923078537 1189330739
样例输出3
12523196466007058