Submission #60907

#	Time	Username	Problem	Language	Result	Execution time	Memory
60907		admin	Art Class (IOI13_artclass)	C++14	76 / 100	134 ms	6560 KiB

artclass

#include "artclass.h"
#include <stdlib.h>
#include <stdio.h>
#include <memory.h>
 
typedef long long ll;
 
int R[500][500], G[500][500], B[500][500];
 
int cha (int x1, int y1, int x2, int y2) {
    return abs(R[x1][y1] - R[x2][y2]) + abs(G[x1][y1] - G[x2][y2]) + abs(B[x1][y1] - B[x2][y2]);
}
 
int count[13*13*13];
 
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
    int i, j;
    
    for(i = 0; i < H; i++) {
        for(j = 0; j < W; j++) {
            ::R[i][j] = R[i][j];
            ::G[i][j] = G[i][j];
            ::B[i][j] = B[i][j];
        }
    }
    
    ll s1 = 0;
    for(i = 0; i < H; i++) {
        for(j = 0; j < W; j++) {
            if(i-1 >= 0) s1 += cha(i-1, j, i, j);
            if(j-1 >= 0) s1 += cha(i, j-1, i, j);
        }
    }
    
    if((double)s1/(H*W) >= 130) return 3;
    
    for(i = 0; i < H; i++) {
        for(j = 0; j < W; j++) {
            int c = (R[i][j]/30) * 8 * 8 + (G[i][j]/30) * 8 + (B[i][j]/30);
            ++count[c];
        }
    }
    
    for(i=0; i<8*8*8; i++) if(count[i] >= H*W/4) return 4;
    
    memset(count, 0, sizeof count);
    for(i = 0; i < H; i++) {
        for(j = 0; j < W; j++) {
            int c = (R[i][j]/20) * 12 * 12 + (G[i][j]/20) * 12 + (B[i][j]/20);
            ++count[c];
        }
    }
    
    for(i=0; i<13*13*13; i++) if(count[i] >= H*W/8) return 1;
    
    //printf("%d %lld %lf\n", H*W, s1, (double)s1/(H*W));
    return 2;
}

• Subtask 1: 76 / 100