Submission #1442970
Source Code Expand
using System; using System.Linq; namespace ABC056C { class Program { static void Main(string[] args) { new Solver().Solve(); } } class Solver { long X; public void Solve() { // キャスト前の値以上の整数なら条件を満たす. int ans = (int)((-1.0 + Math.Sqrt(1 + 8 * X)) / 2.0); // 条件を満たすときtrueを返す. Func<int, bool> check = t => t * t + t - 2 * X >= 0; if (!check(ans)) { ans++; } Console.WriteLine(ans); } public Solver() { X = ReadLong(); } static String ReadString() { return Console.ReadLine(); } static int ReadInt() { return int.Parse(Console.ReadLine()); } static long ReadLong() { return long.Parse(Console.ReadLine()); } static double ReadDouble() { return double.Parse(Console.ReadLine()); } static String[] ReadStringArray() { return Console.ReadLine().Split(' '); } static int[] ReadIntArray() { return Console.ReadLine().Split(' ').Select(e => int.Parse(e)).ToArray(); } static long[] ReadLongArray() { return Console.ReadLine().Split(' ').Select(e => long.Parse(e)).ToArray(); } static double[] ReadDoubleArray() { return Console.ReadLine().Split(' ').Select(e => double.Parse(e)).ToArray(); } } }
Submission Info
Submission Time | |
---|---|
Task | C - Go Home |
User | Anchovy |
Language | C# (Mono 4.6.2.0) |
Score | 200 |
Code Size | 1505 Byte |
Status | AC |
Exec Time | 21 ms |
Memory | 13140 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 200 / 200 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | 0_000.txt, 0_001.txt, 0_002.txt |
All | 0_000.txt, 0_001.txt, 0_002.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_000.txt | AC | 21 ms | 11092 KB |
0_001.txt | AC | 21 ms | 11092 KB |
0_002.txt | AC | 20 ms | 9044 KB |
1_003.txt | AC | 21 ms | 11092 KB |
1_004.txt | AC | 20 ms | 9172 KB |
1_005.txt | AC | 21 ms | 11092 KB |
1_006.txt | AC | 21 ms | 11092 KB |
1_007.txt | AC | 21 ms | 11092 KB |
1_008.txt | AC | 20 ms | 9044 KB |
1_009.txt | AC | 21 ms | 11092 KB |
1_010.txt | AC | 20 ms | 9172 KB |
1_011.txt | AC | 20 ms | 9044 KB |
1_012.txt | AC | 20 ms | 9044 KB |
1_013.txt | AC | 20 ms | 9044 KB |
1_014.txt | AC | 20 ms | 9044 KB |
1_015.txt | AC | 21 ms | 9044 KB |
1_016.txt | AC | 20 ms | 9044 KB |
1_017.txt | AC | 21 ms | 13140 KB |