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Author: BrandonTang89

Other_Tasks/CF2072_C_Creating_Keys_for_StORages_Has_Become_My_Main_Skill.cpp

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+#pragma GCC optimize("Ofast")
+#pragma GCC optimize("unroll-loops")
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+    int tc;
+    cin >> tc;
+    while (tc--) {
+        int n, x;
+        cin >> n >> x;
+
+        vector<int> ans;
+        int i = 0;
+        int orSoFar = 0;
+        for (; i < n - 1; i++) {
+            if ((i & x) == i) {
+                orSoFar |= i;
+                ans.push_back(i);
+            } else {
+                break;
+            }
+        }
+
+        if (i == n - 1 && (i | orSoFar) == x) {
+            ans.push_back(i);
+        } else {
+            for (; i < n; i++) {
+                ans.push_back(x);
+            }
+        }
+
+        for (int i = 0; i < n; i++) {
+            cout << ans[i] << " ";
+        }
+        cout << endl;
+    }
+
+    return 0;
+}