Submission #1318379

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Source Code Expand

//#define MYDEBUG
#include <bits/stdc++.h>
#ifdef MYDEBUG
#define debug(x) cout<<#x<<": "<<x<<endl
#define ifcin(x) std::ifstream cin(x)
#else
#define debug(x)
#define ifcin(x)
#endif
#define ll long long
#define ull unsigned long long
#define eps 1e-14
#define all(x) x.begin(), x.end()
using std::cout;
using std::cin;
using std::endl;
using std::vector;
using std::ostream;
using std::min;
using std::max;
using std::sort;

template<typename T>
ostream& operator<<(ostream& out, const vector<T>& v) {
	out << "[";
	size_t last = v.size() - 1;
	for (size_t i = 0; i < v.size(); ++i) {
		out << v[i];
		if (i != last)
			out << ",";
	}
	out << "]";
	return out;
}

void solve() {
	ll x;
	cin >> x;
	ll r = x % 11L;
	ll d = x / 11L;
	ll ans = d * 2;
	if (0 < r && r <= 6) {
		ans += 1;
	} else if (0 < r) {
		ans += 2;
	}
	cout << ans << endl;
}

int main() {
	solve();
}

Submission Info

Judge Result