Submission #123168

#	Time	Username	Problem	Language	Result	Execution time	Memory
123168		Mahdi_Jfri	Art Class (IOI13_artclass)	C++14	38 / 100	241 ms	15980 KiB

artclass

//#include "grader.h"
#include "artclass.h"
#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define ld long double

const int maxn = 5e2 + 20;
const int dx[] = {0 , 0 , -1 , 1};
const int dy[] = {1 ,-1 ,  0 , 0};

int t2(int x)
{
	return x * x;
}

int style(int n , int m , int R[500][500] , int G[500][500] , int B[500][500])
{
	vector<int> tmp1 , tmp2 , tmp3;

	ld mG = 0 , mR = 0 , mB = 0;
	for(int x = 0; x < n; x++)
		for(int y = 0; y < m; y++)
		{
			mG += t2(255 - G[x][y]) + 10 * t2(R[x][y] + B[x][y]);
			mR += t2(255 - R[x][y]) + 10 * t2(G[x][y] + B[x][y]);
			mB += t2(255 - B[x][y]) + 10 * t2(R[x][y] + G[x][y]);

			for(int i = 0; i < 4; i++)
			{
				int nx = x + dx[i] , ny = y + dy[i];
				if(0 <= nx && nx < n && 0 <= ny && ny < m)
				{
					tmp1.pb(t2(R[x][y] - R[nx][ny]));
					tmp2.pb(t2(G[x][y] - G[nx][ny]));
					tmp3.pb(t2(B[x][y] - B[nx][ny]));
				}
			}
		}

	mG /= n * m;
	mB /= n * m;
	mR /= n * m;

	sort(tmp1.begin() , tmp1.end());
	sort(tmp2.begin() , tmp2.end());
	sort(tmp3.begin() , tmp3.end());

	reverse(tmp1.begin() , tmp1.end());
	reverse(tmp2.begin() , tmp2.end());
	reverse(tmp3.begin() , tmp3.end());

	tmp1.erase(tmp1.begin() , tmp1.begin() + n * m);
	tmp2.erase(tmp2.begin() , tmp2.begin() + n * m);
	tmp3.erase(tmp3.begin() , tmp3.begin() + n * m);

	ld sum1 = 0 , sum2 = 0 , sum3 = 0 , sz = tmp1.size();
	for(int i = 0; i < (int)tmp1.size(); i++)
	{
		sum1 += tmp1[i];
		sum2 += tmp2[i];
		sum3 += tmp3[i];
	}

	sum1 += sum2 + sum3;
	sz *= 3;

	if(mG <= 5e5)
		return 2;
	if(sum1 / sz >= 400)
		return 3;
	if(min(mB , min(mG , mR)) <= 7e5)
		return 4;
	return 1;
}

• Subtask 1: 38 / 100