Created
March 26, 2015 11:11
-
-
Save paralleltree/26d55b064a8ec4fb2889 to your computer and use it in GitHub Desktop.
学内プロコン(15/03/26)
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
using System; | |
using System.Collections.Generic; | |
using System.Linq; | |
using System.Text; | |
class Program | |
{ | |
// ref: https://github.com/OCTPC/miniprocon/blob/master/miniprocon002/regulation.md | |
static void Main(string[] args) | |
{ | |
string[] str = Console.ReadLine().Split(' '); | |
long n = long.Parse(str[0]); | |
long m = long.Parse(str[1]); | |
var map = new bool[m, n]; | |
var memox = new int[m, n]; | |
var memoy = new int[m, n]; | |
for (int i = 0; i < n; i++) | |
{ | |
int begin = 0, count = 0; | |
string s = Console.ReadLine(); | |
for (int j = 0; j < m; j++) | |
{ | |
map[j, i] = s[j] == '#'; | |
// 読みながらxカウント | |
if (map[j, i]) | |
{ | |
count++; | |
if (j < m - 1) continue; // 端だったら強制カウントさせる | |
} | |
for (int k = j; k >= begin; k--) | |
memox[k, i] = begin + count - k; | |
begin = j + 1; | |
count = 0; | |
} | |
} | |
//// xカウント | |
//for (int i = 0; i < n; i++) | |
//{ | |
// int begin = 0, count = 0; | |
// while (begin < m) | |
// { | |
// for (int j = begin; j < m; j++) | |
// { | |
// if (map[j, i]) | |
// { | |
// count++; | |
// if (j < m - 1) continue; | |
// } | |
// for (int k = j; k >= begin; k--) | |
// memox[k, i] = begin + count - k; | |
// begin = j + 1; | |
// count = 0; | |
// } | |
// } | |
//} | |
// yカウント | |
for (int i = 0; i < m; i++) | |
{ | |
int begin = 0, count = 0; | |
for (int j = begin; j < n; j++) | |
{ | |
if (map[i, j]) | |
{ | |
count++; | |
if (j < n - 1) continue; | |
} | |
for (int k = j; k >= begin; k--) | |
memoy[i, k] = begin + count - k; | |
begin = j + 1; | |
count = 0; | |
} | |
} | |
int ans = 0; | |
for (int y = 0; y < n - 2; y++) | |
for (int x = 0; x < m - 2; x++) | |
{ | |
if (!map[x, y]) continue; | |
if (memox[x, y] < 3 || memoy[x, y] < 3) continue; | |
int tilx = x + memox[x, y]; // 可能性のある右端まで | |
int tily = y + memoy[x, y]; // 可能性のある下っ端まで | |
for (int i = x + 2; i < tilx; i++) | |
{ | |
if (memoy[i, y] < 3) continue; | |
for (int j = y + 2; j < tily; j++) | |
{ | |
if (!map[i, j]) break;// 右の辺が絶たれていたら打ち切る (テストケースで発見できなかったバグ) | |
if (memox[x, j] >= i - x + 1) ans++; | |
} | |
} | |
} | |
Console.WriteLine(ans); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment