This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr int mod = 1e9 + 7;
signed main() {
cin.tie(0)->sync_with_stdio(0);
int n; cin >> n;
ll res = n;
n--;
while (n--) {
res = res * 2 % mod;
}
cout << res << '\n';
}
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