Submission #139126

#	Time	Username	Problem	Language	Result	Execution time	Memory
139126		claudy	Rice Hub (IOI11_ricehub)	C++14	68 / 100	18 ms	1952 KiB

ricehub

# include "ricehub.h"
//# pragma GCC optimize("Ofast,no-stack-protector")
//# pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
# pragma GCC optimize("Ofast")
# pragma GCC optimization ("unroll-loops")
# include "bits/stdc++.h"
/*
# include <ext/pb_ds/tree_policy.hpp>
# include <ext/pb_ds/assoc_container.hpp>
# include <ext/rope>
*/
std::pair<int,int> DR[] = {{-1,0},{0,1},{1,0},{0,-1},{-1,1},{-1,-1},{1,1},{1,-1}};
# define ll long long
# define clock (clock() * 1000.0 / CLOCKS_PER_SEC)
# define rc(s) return cout << s,0
# define rcg(s) cout << s;exit(0)
# define _ ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
# define db(x) cerr << #x << " = " << x << '\n'
# define pb push_back
# define mp make_pair
# define all(s) s.begin(),s.end()
# define sz(x) (int)((x).size())
using namespace std;

int a[1 << 17];


int besthub(int n, int useless, int v[], long long B)
{
# define int ll
	int l = 1;
	int r = n;
	for(int i = 1;i <= n;i++)
	{
		a[i] = v[i - 1];
		a[i] += a[i - 1];
	}
	while(l < r)
	{
		int len = (l + r + 1) / 2;
		bool ok = 0;
		for(int i = len;i <= n;i++)
		{
			int L = i - len + 1;
			int R = i;
			int mid = (L + R) / 2;
			int f = 0;
			f += (a[mid] - a[mid - 1]) * (mid - L + 1) - a[mid] + a[L - 1];
			f += a[R] - a[mid - 1] - (a[mid] - a[mid - 1]) * (R - mid + 1);
			ok |= (f <= B);
		}
		if(ok) l = len;
		else r = len - 1;
	}
	return l;
}

Compilation message (stderr)

ricehub.cpp:5:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 # pragma GCC optimization ("unroll-loops")

• Subtask 1: 17 / 17
• Subtask 2: 25 / 25
• Subtask 3: 26 / 26
• Subtask 4: 0 / 32