Revert "Update 42.cpp"

cpp/42.cpp

@@ -1,21 +1,50 @@
-#include <iostream>
-#include <vector>
-
- using namespace std;
-
- int main()
- {
-     vector<int> list;
-     int x = 0;
-     while(x != 42)
-     {
-         scanf("%d",&x);
-         if(x!=42)
-         list.push_back(x);
-     }
-     for(int i=0 ; i < (signed)(list.size()) ; i++)
-     {
-         printf("%d\n",list.at(i));
-     }
-     return 0;
- }
+    #include <bits/stdc++.h>
+    #define fastIO ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
+    using namespace std;
+    typedef long long ll;
+    template <class ll>
+    void fastscan(ll &number)
+    {
+        //variable to indicate sign of input number
+        bool negative = false;
+        register ll c;
+
+        number = 0;
+
+        // extract current character from buffer
+        c = getchar_unlocked();
+        if (c=='-')
+        {
+            // number is negative
+            negative = true;
+
+            // extract the next character from the buffer
+            c = getchar_unlocked();
+        }
+
+        // Keep on extracting characters if they are integers
+        // i.e ASCII Value lies from '0'(48) to '9' (57)
+        for (; (c>47 && c<58); c=getchar_unlocked())
+            number = number *10 + c - 48;
+
+        // if scanned input has a negative sign, negate the
+        // value of the input number
+        if (negative)
+            number *= -1;
+    }
+
+    // Function Call
+    int main()
+    {
+        fastIO;
+        while (true)
+        {
+            ll n;
+            fastscan(n);
+            if (n==42)
+                break;
+            else
+                cout<<n<<"\n";
+        }
+    }
+