Submission #3607639

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
// ==================================================
using i64 = int64_t;
using u64 = uint64_t;
#define rep(i,a,b) for(i64 i=(int64_t)(a);i<(int64_t)(b);i++)
#define repn(i,n) rep(i,0,n)
#define din(t, ...) t __VA_ARGS__;_din(__VA_ARGS__)
#define v(t,n) vector<t> n
void _din() {}
void dout() { cout << endl; }
template <typename T, typename ... Args> inline void _din(T& head, Args& ... rest) { cin >> head; _din(rest...); }
template <typename T, typename ... Args> inline void dout(T head, Args ... rest) { cout << head; if (sizeof...(rest)) cout << ' '; dout(rest...); }
template <typename T>inline void qsortv(vector<T>& v) { qsort(v.data(), v.size(), sizeof(T), [](const void*a, const void*b)->int {if ((*(T*)a) < (*(T*)b))return -1; if ((*(T*)a) == (*(T*)b))return 0; return 1; }); }
template <typename T, typename F>inline void qsortv(vector<T>& v, F func) { qsort(v.data(), v.size(), sizeof(T), func); }
template <typename T>inline void sortv(vector<T>& v) { sort(v.begin(), v.end()); }
// ==================================================

int main()
{
	din(int, n);
	dout(n%2?2*n:n);
}

Submission Info

Judge Result