delete pics to save space

p.CH1803.cpp

@@ -0,0 +1,36 @@
+//http://contest-hunter.org:83/contest/0x18%E3%80%8C%E5%9F%BA%E6%9C%AC%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84%E3%80%8D%E7%BB%83%E4%B9%A0/1803%20City%20Game
+#include<iostream>
+#include<algorithm>
+using namespace std;
+const int maxn=1005;
+int n,m,a[maxn][maxn],h[maxn],w[maxn],cnt,res; char x;
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	ios::sync_with_stdio(0);
+	cin>>n>>m;
+	for(int i=1;i<=n;i++) for(int j=1;j<=m;j++)
+	{
+		cin>>x;
+		if(x=='F') a[i][j]=a[i-1][j]+1;
+	}
+	for(int i=1;i<=n;i++)
+	{
+		cnt=0;
+		for(int j=1;j<=m+1;j++)
+		{
+			int wid=0;
+			while(cnt&&h[cnt-1]>=a[i][j])
+			{
+				wid+=w[cnt-1];
+				res=max(res,wid*h[cnt-1]);
+				cnt--;
+			}
+			h[cnt]=a[i][j]; w[cnt]=wid+1; cnt++;
+		}
+	}
+	printf("%d\n",res*3);
+	return 0;
+}