Submission #131669

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Source Code Expand

#include <algorithm>
#include <bitset>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <fstream>
//#include <gmpxx.h> 
#include <iostream>
//#include <map>
#include <queue>
#include <unordered_map>
#include <utility>
#include <set>
#include <sstream>
#include <stack>
#include <string>
//#include <sys/time.h>
#include <vector>
using namespace std;
#define li          int64_t
#define rep(i, n)   for(li i = 0; i < ((li)(n)); ++i)
#define pb          push_back
#define sz(v)       ((li)((v).size()))
#define bit(n)      (((li)1)<<((li)(n)))
#define all(v)      (v).begin(), (v).end()
#define each(it, v) for(__typeof((v).begin()) it = (v).begin(); it != (v).end(); ++it)
#define MP          make_pair
#define F           first
#define S           second

int main()
{
  li N;
  cin >> N;
  cout << N * 2 << endl;
}

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