powerful competitive programming workspace template

template.cpp

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+#include <bits/stdc++.h>
+
+using namespace std;
+
+using int64 = long long;
+const int64 inf = 0x3f3f3f3f;
+const int64 INF = 0x3f3f3f3f3f3f3f3f;
+const int Mod = 1e9 + 7;
+const int N = 3e5 + 10;
+
+void solve() {
+    cout << "Hello world" << '\n';
+}
+
+signed main() {
+#ifndef LOCAL
+    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
+#endif
+    int t = 1;
+    // cin >> t;
+    while (t--)
+        solve();
+    return 0;
+}