Submission #1867701

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Source Code Expand

#include <bits/stdc++.h>
#define REP(i,a,b) for(int i=(a);i<(b);i++)
#define RREP(i,a,b) for(int i=(a);i>=(b);i--)
#define pq priority_queue
#define P pair<int,int>
#define P2 pair<int,P>
#define P3 pair<int,P2>
typedef long long ll; typedef long double ld;
using namespace std;
const int INF=1e9, MOD=1e9+7, around[]={0,1,1,-1,-1,0,-1,1,0,0};
const ll LINF=1e18;
const ld PI=abs(acos(-1));
ll n;

int main(){
	cin >> n;
	
	ll pos=(n/11+!!(n%11));
	if(11*pos-5>=n) pos=2*pos-1;
	else pos*=2;
	cout << pos << endl;
	return 0;
}

Submission Info

Judge Result