diff --git a/6/B/president's-office.cc b/6/B/president's-office.cc
new file mode 100644
index 0000000..52bc3df
--- /dev/null
+++ b/6/B/president's-office.cc
@@ -0,0 +1,67 @@
+/*
+* STATUS = ACCEPTED
+*/
+
+#include <cstdio>
+#include <vector>
+#include <sstream>
+#include <algorithm>
+#include <stack>
+#include <cstring>
+#include <set>
+#include <iostream>
+
+using namespace std;
+
+#define FOR(i,n)   for(int i=0; i<n; ++i)
+#define FORE(it,c) for(__typeof(c.begin()) it = c.begin(); it != c.end(); it++)
+#define SZ(c)      ((int)c.size())
+
+int main()
+{
+    #ifndef ONLINE_JUDGE
+        freopen("president's-office.in","r",stdin);
+    #endif
+
+    int n, m;
+    string str, c;
+    int dir[][2] = { {0,-1}, {0,1}, {-1,0}, {1,0} };
+    set<char> deputies;
+
+    getline(cin, str);
+    istringstream strin(str);
+    strin >> n >> m >> c;
+
+    vector<string> room(n);
+
+    FOR(i,n)
+    {
+        getline(cin, room[i]);
+    }
+
+
+    FOR(i,n)
+    {
+        FOR(j,m)
+        {
+            if(room[i][j] == c[0])
+            {
+                FOR(k, 4)
+                {
+                    int ii = i + dir[k][0], jj = j + dir[k][1];
+                    if((ii >= 0) && (ii < n) && (jj >= 0) && (jj < m))
+                    {
+                        if(room[ii][jj] != c[0] && room[ii][jj] != '.')
+                        {
+                            deputies.insert(room[ii][jj]);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    printf("%d\n", deputies.size());
+
+    return 0;
+}