diff --git a/GESP/GESP九月三级C++真题.pdf b/GESP/GESP九月三级C++真题.pdf
index 47a590b..b97ed7f 100644
Binary files a/GESP/GESP九月三级C++真题.pdf and b/GESP/GESP九月三级C++真题.pdf differ
diff --git a/TangDou/51NOD/Test.cpp b/TangDou/51NOD/Test.cpp
index 6fa60e4..841ff8d 100644
--- a/TangDou/51NOD/Test.cpp
+++ b/TangDou/51NOD/Test.cpp
@@ -1,23 +1,17 @@
 #include <bits/stdc++.h>
 using namespace std;
 int main() {
-    int a = 10, b = 20;
-
-    cout << "a<<8=" << (a << 8) << endl;
-    int x = 2560;
-    // 101000000000
-    vector<int> q;
-    while (x) {
-        q.push_back(x % 2);
-        x /= 2;
+    int n;
+    char mx = '0';
+    cin >> n;
+    for (int i = 0; i < n; i++) {
+        string s;
+        cin >> s;
+        for (int i = 0; i < s.size(); i++) {
+            if (s[i] > mx)
+                mx = s[i];
+        }
+        cout << (mx <= '1') << " " << (mx <= '7') << " " << (mx <= '9') << " " << (mx <= 'F') << endl;
     }
-    for (int i = q.size() - 1; i >= 0; i--) cout << q[i];
-    cout << endl;
-
-    a = (a << 8) | b;
-
-    b = a >> 8;
-    a = a & 0xff;
-    cout << a << " " << b << endl;
     return 0;
 }
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