diff --git a/09xxx/09398.cpp b/09xxx/09398.cpp
new file mode 100644
index 00000000..62df4ea4
--- /dev/null
+++ b/09xxx/09398.cpp
@@ -0,0 +1,33 @@
+#include <iostream>
+#include <string>
+using namespace std;
+
+bool check(const string &s) {
+  bool a = false, b = false, c = false;
+  for (int i=0; i<s.length(); i++) {
+    if ('A' <= s[i] && s[i] <= 'Z') a = true;
+    if ('a' <= s[i] && s[i] <= 'z') b = true;
+    if ('0' <= s[i] && s[i] <= '9') c = true;
+  }
+  return a && b && c;
+}
+
+int solve(void) {
+  string s; cin >> s;
+
+  for (int i=6; i<=s.length(); i++) {
+    for (int j=0; j<=s.length()-i; j++) {
+      if (check(s.substr(j, i)))  return i;
+    }
+  }
+  return 0;
+}
+
+int main(void) {
+  ios::sync_with_stdio(false);
+  cin.tie(nullptr);
+
+  int n; cin >> n;
+  while (n--) cout << solve() << "\n";
+  return 0;
+}
\ No newline at end of file