diff --git a/QUSTOJ/1101.cpp b/QUSTOJ/1101.cpp
new file mode 100644
index 0000000..c3d9ad6
--- /dev/null
+++ b/QUSTOJ/1101.cpp
@@ -0,0 +1,52 @@
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+ 
+using namespace std;
+ 
+//Written by Kiritow On Dec. 2ND, 2015
+char map[500][500];
+bool vis[500][500];
+ 
+int xmax,ymax;
+ 
+void dfs(int y,int x)
+{
+    if(y<0||x<0||y>=ymax||x>=xmax) return;
+    if(vis[y][x]||map[y][x]=='*') return;
+    vis[y][x]=true;
+    dfs(y-1,x);
+    dfs(y+1,x);
+    dfs(y,x-1);
+    dfs(y,x+1);
+}
+ 
+int main()
+{
+    scanf("%d %d",&xmax,&ymax);
+    for(int i=0;i<ymax;i++)
+    {
+        scanf("%s",&map[i][0]);
+    }
+    for(int i=0;i<xmax;i++)
+    {
+        if(map[0][i]!='*')
+        {
+            dfs(0,i);
+            break;
+        }
+    }
+    int cnt=0;
+    for(int i=0;i<ymax;i++)
+    {
+        for(int j=0;j<xmax;j++)
+        {
+            if(!vis[i][j]&&map[i][j]=='0')
+            {
+                cnt++;
+            }
+        }
+    }
+    printf("%d\n",cnt);
+    return 0;
+}