diff --git a/GESP/TangDou.cpp b/GESP/TangDou.cpp
index 55864ab..16d5036 100644
--- a/GESP/TangDou.cpp
+++ b/GESP/TangDou.cpp
@@ -1,44 +1,21 @@
 #include <bits/stdc++.h>
 using namespace std;
 
-int chenghebi(int u) {
-    int t = u * 7;
-    int sum = 0;
-    while (t > 9) {
-        sum = t / 10 + t % 10;
-        t = sum;
-    }
-    return t;
-}
-
 int main() {
-   int T;
-    cin >> T;
-   while (T--) {
-        int n;
-        int dj = 0;
-        int k = 0;
-        int c[10000] = {0};
-        cin >> n;
-        while (n != 0) {
-            dj++;
-            int a = n % 10;
-            if ( dj% 2 == 0)
-                c[dj] = a;
-            else
-                c[dj] = chenghebi(a);
-            n /= 10;
+    for (int i = 1;; i++) {
+        int flag = 0;
+        int x = i;
+        for (int j = 1; j <= 5; j++) {
+            if ((x - 1 <= 0) || (x - 1) % 5 > 0) {
+                flag = 1;
+                break;
+            }
+            x = (x - 1) / 5 * (5 - 1);
         }
-        for (int i = dj; i >= 1; i--) {
-            k *= 10;
-            k += c[i];
-        
+        if (flag == 0) {
+            cout << i << endl;
+            exit(0);
         }
-
-        if (k % 8 == 0)
-            cout << "T" << endl;
-        else
-            cout << "F" << endl;
     }
 
     return 0;