diff --git a/Codeforces_1560A.cpp b/Codeforces_1560A.cpp
new file mode 100644
index 0000000..a89d575
--- /dev/null
+++ b/Codeforces_1560A.cpp
@@ -0,0 +1,43 @@
+#include <bits/stdc++.h>
+#define ll long long int
+
+using namespace std;
+
+vector<ll> v;
+
+void preComputation()
+{
+    for (int i = 1; i <= 2000; i++)
+    {
+        if (i % 3 == 0 || i % 10 == 3)
+        {
+            //nothing
+        }
+        else
+        {
+            v.push_back(i);
+        }
+    }
+}
+
+void solve()
+{
+    ll n;
+    cin >> n;
+    cout << v[n - 1] << "\n";
+}
+
+int main()
+{
+    ios_base::sync_with_stdio(false);
+    cin.tie(NULL);
+
+    preComputation();
+
+    ll t;
+    cin >> t;
+    while (t--)
+    {
+        solve();
+    }
+}
\ No newline at end of file