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Submission #962256

# Submission time Handle Problem Language Result Execution time Memory
962256 2024-04-13T09:47:39 Z danikoynov Art Class (IOI13_artclass) C++14
76 / 100
 55 ms 9820 KB 
#include "artclass.h"
#include<bits/stdc++.h>
using namespace std;

struct pixel
{
    double r, g, b;
    pixel(double _r = 0.0, double _g = 0.0, double _b = 0.0)
    {
        r = _r;
        g = _g;
        b = _b;
    }
};

//pixel avg_st[5];
pixel image[510][510];
int h, w;

pixel avg_dev[5];

void init()
{
    //   avg_st[1] = pixel(189.852, 166.758, 147.354);
    // avg_st[2] = pixel(102.854, 98.1113, 64.2302);
    // avg_st[3] = pixel(140.586, 128.459, 107.031);
    // avg_st[4] = pixel(158.108, 89.7725, 55.3149);

    avg_dev[1] = pixel(1018.01, 1022.23, 1191.85);
    avg_dev[2] = pixel(424.553, 383.047, 273.954);
    avg_dev[3] = pixel(2216.33, 2146.01, 1979.27);
    avg_dev[4] = pixel(67.4286, 55.6262, 91.9571);
}

double penalty[5];

pixel average_pixel(int stx, int sty, int enx, int eny)
{
    double sr = 0.0;
    double sg = 0.0;
    double sb = 0.0;

    for (int i = stx; i <= enx; i ++)
        for (int j = sty; j <= eny; j ++)
        {
            sr += image[i][j].r;
            sg += image[i][j].g;
            sb += image[i][j].b;
        }

    double cnt = (enx - stx + 1) * (eny - sty + 1);
    sr /= cnt;
    sg /= cnt;
    sb /= cnt;
    return pixel(sr, sg, sb);
}

pixel region_deviation(int stx, int sty, int enx, int eny)
{
    pixel avg = average_pixel(stx, sty, enx, eny);

    double dr = 0.0;
    double dg = 0.0;
    double db = 0.0;

    for (int i = stx; i <= enx; i ++)
    {
        for (int j = sty; j <= eny; j ++)
        {
            double delta_red = abs(image[i][j].r - avg.r);
            double delta_green = abs(image[i][j].g - avg.g);
            double delta_blue = abs(image[i][j].b - avg.b);

            delta_red = delta_red * delta_red;
            delta_green = delta_green * delta_green;
            delta_blue = delta_blue * delta_blue;

            dr += delta_red;
            dg += delta_green;
            db += delta_blue;
        }
    }

    double cnt = (enx - stx + 1) * (eny - sty + 1);

    dr /= cnt;
    dg /= cnt;
    db /= cnt;

    return pixel(dr, dg, db);
}

const int block = 8;
pixel get_average_block_deviation()
{
    pixel avg;
    double cnt = 0.0;
    for (int i = 0; i < h; i += block)
        for (int j = 0; j < w; j += block)
        {
            int stx = i, sty = j;
            int enx = min(h, i + block) - 1;
            int eny = min(w, j + block) - 1;


            pixel cur = region_deviation(stx, sty, enx, eny);
            for (int s = 1; s <= 4; s ++)
            {
                double dr = abs(cur.r - avg_dev[s].r);
                double dg = abs(cur.g - avg_dev[s].g);
                double db = abs(cur.b - avg_dev[s].b);

                dr = dr * dr;
                dg = dg * dg;
                db = db * db;
                penalty[s] += dr + dg + db;
            }

            avg.r += cur.r;
            avg.g += cur.g;
            avg.b += cur.b;
            cnt ++;
        }

    avg.r /= cnt;
    avg.g /= cnt;
    avg.b /= cnt;
    return avg;
    //cout << "average deviation" << endl;
    //cout << avg.r << " " << avg.g << " " << avg.b << endl;
}

int style(int H, int W, int R[500][500], int G[500][500], int B[500][500])
{
    init();
    h = H;
    w = W;
    for (int i = 0; i < h; i ++)
        for (int j = 0; j < w; j ++)
        {
            image[i][j] = pixel(R[i][j], G[i][j], B[i][j]);
        }

    pixel dev = get_average_block_deviation();

    int mx = 1;
    for (int i = 1; i <= 4; i ++)
    {
        if (penalty[i] < penalty[mx])
            mx = i;
    }
    return mx;
}

Compilation message

artclass.cpp: In function 'int style(int, int, int (*)[500], int (*)[500], int (*)[500])':
artclass.cpp:144:11: warning: variable 'dev' set but not used [-Wunused-but-set-variable]
  144 |     pixel dev = get_average_block_deviation();
      |           ^~~

Subtask #1
76.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 9472 KB Output is correct
2 Correct 27 ms 9332 KB Output is correct
3 Correct 37 ms 9308 KB Output is correct
4 Incorrect 44 ms 9304 KB Output isn't correct
5 Correct 40 ms 9440 KB Output is correct
6 Correct 32 ms 9304 KB Output is correct
7 Incorrect 33 ms 9304 KB Output isn't correct
8 Correct 26 ms 9308 KB Output is correct
9 Incorrect 42 ms 9460 KB Output isn't correct
10 Correct 36 ms 9304 KB Output is correct
11 Correct 29 ms 9480 KB Output is correct
12 Incorrect 41 ms 9308 KB Output isn't correct
13 Incorrect 42 ms 9304 KB Output isn't correct
14 Correct 40 ms 9460 KB Output is correct
15 Correct 20 ms 9308 KB Output is correct
16 Correct 18 ms 9476 KB Output is correct
17 Correct 42 ms 9456 KB Output is correct
18 Incorrect 43 ms 9308 KB Output isn't correct
19 Correct 36 ms 9308 KB Output is correct
20 Correct 35 ms 9304 KB Output is correct
21 Incorrect 40 ms 9304 KB Output isn't correct
22 Correct 39 ms 9308 KB Output is correct
23 Incorrect 49 ms 9304 KB Output isn't correct
24 Correct 34 ms 9456 KB Output is correct
25 Correct 32 ms 9460 KB Output is correct
26 Correct 29 ms 9468 KB Output is correct
27 Correct 35 ms 9304 KB Output is correct
28 Correct 43 ms 9456 KB Output is correct
29 Incorrect 36 ms 9308 KB Output isn't correct
30 Incorrect 41 ms 9304 KB Output isn't correct
31 Correct 35 ms 9308 KB Output is correct
32 Correct 21 ms 9476 KB Output is correct
33 Correct 29 ms 9468 KB Output is correct
34 Incorrect 33 ms 9308 KB Output isn't correct
35 Correct 36 ms 9308 KB Output is correct
36 Correct 33 ms 9304 KB Output is correct
37 Correct 27 ms 9308 KB Output is correct
38 Incorrect 46 ms 9308 KB Output isn't correct
39 Correct 19 ms 9308 KB Output is correct
40 Correct 34 ms 9308 KB Output is correct
41 Correct 23 ms 9304 KB Output is correct
42 Correct 29 ms 9308 KB Output is correct
43 Correct 33 ms 9308 KB Output is correct
44 Correct 45 ms 9308 KB Output is correct
45 Incorrect 26 ms 9308 KB Output isn't correct
46 Correct 39 ms 9308 KB Output is correct
47 Correct 43 ms 9460 KB Output is correct
48 Correct 10 ms 9308 KB Output is correct
49 Correct 18 ms 9308 KB Output is correct
50 Correct 39 ms 9460 KB Output is correct
51 Correct 40 ms 9308 KB Output is correct
52 Correct 34 ms 9556 KB Output is correct
53 Correct 42 ms 9304 KB Output is correct
54 Correct 27 ms 9308 KB Output is correct
55 Incorrect 35 ms 9308 KB Output isn't correct
56 Correct 33 ms 9304 KB Output is correct
57 Correct 27 ms 9472 KB Output is correct
58 Correct 24 ms 9304 KB Output is correct
59 Incorrect 43 ms 9564 KB Output isn't correct
60 Correct 41 ms 9308 KB Output is correct
61 Correct 55 ms 9564 KB Output is correct
62 Correct 23 ms 9304 KB Output is correct
63 Incorrect 39 ms 9308 KB Output isn't correct
64 Correct 34 ms 9308 KB Output is correct
65 Correct 34 ms 9308 KB Output is correct
66 Correct 32 ms 9476 KB Output is correct
67 Correct 35 ms 9480 KB Output is correct
68 Correct 36 ms 9308 KB Output is correct
69 Correct 34 ms 9304 KB Output is correct
70 Correct 35 ms 9304 KB Output is correct
71 Correct 34 ms 9308 KB Output is correct
72 Correct 35 ms 9308 KB Output is correct
73 Correct 34 ms 9480 KB Output is correct
74 Incorrect 43 ms 9460 KB Output isn't correct
75 Correct 34 ms 9332 KB Output is correct
76 Correct 32 ms 9308 KB Output is correct
77 Correct 35 ms 9308 KB Output is correct
78 Correct 35 ms 9428 KB Output is correct
79 Correct 23 ms 9308 KB Output is correct
80 Correct 36 ms 9308 KB Output is correct
81 Correct 45 ms 9308 KB Output is correct
82 Correct 28 ms 9304 KB Output is correct
83 Incorrect 34 ms 9304 KB Output isn't correct
84 Correct 33 ms 9308 KB Output is correct
85 Correct 42 ms 9304 KB Output is correct
86 Correct 46 ms 9308 KB Output is correct
87 Correct 44 ms 9460 KB Output is correct
88 Correct 42 ms 9552 KB Output is correct
89 Correct 38 ms 9464 KB Output is correct
90 Correct 32 ms 9304 KB Output is correct
91 Incorrect 32 ms 9308 KB Output isn't correct
92 Correct 33 ms 9308 KB Output is correct
93 Correct 34 ms 9480 KB Output is correct
94 Correct 25 ms 9476 KB Output is correct
95 Correct 28 ms 9420 KB Output is correct
96 Incorrect 46 ms 9820 KB Output isn't correct
97 Correct 37 ms 9372 KB Output is correct
98 Incorrect 34 ms 9308 KB Output isn't correct
99 Correct 27 ms 9308 KB Output is correct
100 Correct 35 ms 9480 KB Output is correct
101 Correct 27 ms 9456 KB Output is correct
102 Correct 36 ms 9308 KB Output is correct