Submission #5911660
Source Code Expand
using System.Collections.Generic; using System.Text; using static System.Console; using static System.Math; class Program { static void Main(string[] args) { int N = ReadLineParseInt(); KeyValuePair<int, int>[] pos = new KeyValuePair<int, int>[N]; for(int i = 0; i < N; i++) { int[] xy = ReadLineParseIntArray(); pos[i] = new KeyValuePair<int, int>(xy[0], xy[1]); } int ans = 0; for(int i = 0; i < N - 2; i++) for(int j = i + 1; j < N - 1; j++) for(int k = j + 1; k < N; k++) { int x1 = pos[j].Key - pos[i].Key; int y1 = pos[j].Value - pos[i].Value; int x2 = pos[k].Key - pos[i].Key; int y2 = pos[k].Value - pos[i].Value; long v = Abs(x1 * y2 - y1 * x2); if (v != 0 && v % 2 == 0) ans++; } WriteLine(ans); } static int ReadLineParseInt() => int.Parse(ReadLine()); static int[] ReadLineParseIntArray() => ReadLine().Split(' ').Select(int.Parse).ToArray(); }
Submission Info
Submission Time | |
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Task | B - 格子点と整数 |
User | oziya |
Language | C# (Mono 4.6.2.0) |
Score | 0 |
Code Size | 1202 Byte |
Status | CE |
Compile Error
./Main.cs(33,67): error CS1061: Type `string[]' does not contain a definition for `Select' and no extension method `Select' of type `string[]' could be found. Are you missing `System.Linq' using directive? /usr/lib/mono/4.5/mscorlib.dll (Location of the symbol related to previous error)