競プロ典型 90 問 / Q052

Q052.cs

using System;
using System.Linq;

class Q052
{
	const long M = 1000000007;
	static long[] ReadL() => Array.ConvertAll(Console.ReadLine().Split(), long.Parse);
	static void Main()
	{
		var n = int.Parse(Console.ReadLine());
		Console.WriteLine(new bool[n].Select(_ => ReadL().Sum()).Aggregate((x, y) => x * y % M));
	}
}

https://atcoder.jp/contests/typical90/submissions/23124128