Submission #15781

#	Time	Username	Problem	Language	Result	Execution time	Memory
15781		gs13068	Art Class (IOI13_artclass)	C++98	100 / 100	133 ms	3616 KiB

artclass

#include "artclass.h"
#include <cmath>

int style(int H,int W,int R[500][500],int G[500][500],int B[500][500])
{
	double diff=0,border=0;
    int i,j;
    for(i=0;i<H;i++)for(j=1;j<W;j++)diff+=pow(R[i][j]-R[i][j-1],2)+pow(G[i][j]-G[i][j-1],2)+pow(B[i][j]-B[i][j-1],2);
    for(i=0;i<H;i++)for(j=1;j<W;j++)if(pow(R[i][j]-R[i][j-1],2)+pow(G[i][j]-G[i][j-1],2)+pow(B[i][j]-B[i][j-1],2)>diff/W/H)border+=1;
    diff=sqrt(diff/W/H)/45;
    border=border/W/H;
    if(diff<0.25)return 4;
    if(diff>0.96)return 3;
    if(border>0.18)return 2;
    return 1;
}

• Subtask 1: 100 / 100