Precreation contest files

misc/chuyen-de-xau/b5.cpp

@@ -0,0 +1,38 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+  ios::sync_with_stdio(false);
+  cin.tie(nullptr);
+
+  string s;
+  cin >> s;
+
+  vector<char> digits;
+  for (char c : s) {
+    if (isdigit(c))
+      digits.push_back(c);
+  }
+
+  int m = digits.size();
+  string result = "";
+  int pos = 0;
+
+  for (int need = 5; need > 0; need--) {
+    char best = '0';
+    int bestPos = pos;
+
+    for (int i = pos; i <= m - need; i++) {
+      if (digits[i] > best) {
+        best = digits[i];
+        bestPos = i;
+      }
+    }
+
+    result.push_back(best);
+    pos = bestPos + 1;
+  }
+
+  cout << result;
+  return 0;
+}