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Submission #962267

# Submission time Handle Problem Language Result Execution time Memory
962267 2024-04-13T09:55:00 Z danikoynov Art Class (IOI13_artclass) C++14
67 / 100
 54 ms 9728 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(2288.99, 2322.12, 2839.83);
    avg_dev[2] = pixel(749.693, 627.756, 424.602);
    avg_dev[3] = pixel(2897.08, 2767.16, 2537.68);
    avg_dev[4] = pixel(169.811, 143.836, 248.756);
}

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 = 20;
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
67.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 9308 KB Output is correct
2 Correct 38 ms 9304 KB Output is correct
3 Correct 36 ms 9456 KB Output is correct
4 Correct 40 ms 9472 KB Output is correct
5 Incorrect 40 ms 9304 KB Output isn't correct
6 Correct 41 ms 9304 KB Output is correct
7 Correct 34 ms 9308 KB Output is correct
8 Correct 28 ms 9308 KB Output is correct
9 Correct 35 ms 9308 KB Output is correct
10 Incorrect 26 ms 9304 KB Output isn't correct
11 Correct 38 ms 9304 KB Output is correct
12 Incorrect 54 ms 9308 KB Output isn't correct
13 Correct 24 ms 9484 KB Output is correct
14 Correct 26 ms 9400 KB Output is correct
15 Incorrect 27 ms 9308 KB Output isn't correct
16 Correct 34 ms 9308 KB Output is correct
17 Correct 34 ms 9308 KB Output is correct
18 Correct 34 ms 9308 KB Output is correct
19 Correct 35 ms 9304 KB Output is correct
20 Correct 28 ms 9308 KB Output is correct
21 Correct 38 ms 9456 KB Output is correct
22 Correct 32 ms 9456 KB Output is correct
23 Incorrect 23 ms 9308 KB Output isn't correct
24 Correct 43 ms 9400 KB Output is correct
25 Incorrect 42 ms 9456 KB Output isn't correct
26 Correct 34 ms 9304 KB Output is correct
27 Correct 25 ms 9556 KB Output is correct
28 Correct 41 ms 9308 KB Output is correct
29 Correct 39 ms 9308 KB Output is correct
30 Correct 25 ms 9308 KB Output is correct
31 Correct 13 ms 9304 KB Output is correct
32 Correct 37 ms 9304 KB Output is correct
33 Correct 31 ms 9308 KB Output is correct
34 Correct 25 ms 9308 KB Output is correct
35 Incorrect 35 ms 9308 KB Output isn't correct
36 Correct 33 ms 9308 KB Output is correct
37 Incorrect 43 ms 9308 KB Output isn't correct
38 Correct 33 ms 9308 KB Output is correct
39 Correct 37 ms 9308 KB Output is correct
40 Correct 31 ms 9304 KB Output is correct
41 Correct 41 ms 9452 KB Output is correct
42 Correct 29 ms 9308 KB Output is correct
43 Correct 39 ms 9480 KB Output is correct
44 Correct 36 ms 9304 KB Output is correct
45 Correct 15 ms 9308 KB Output is correct
46 Incorrect 33 ms 9308 KB Output isn't correct
47 Incorrect 44 ms 9300 KB Output isn't correct
48 Incorrect 43 ms 9560 KB Output isn't correct
49 Correct 37 ms 9472 KB Output is correct
50 Incorrect 34 ms 9308 KB Output isn't correct
51 Correct 26 ms 9308 KB Output is correct
52 Correct 35 ms 9308 KB Output is correct
53 Incorrect 27 ms 9308 KB Output isn't correct
54 Correct 30 ms 9308 KB Output is correct
55 Incorrect 41 ms 9460 KB Output isn't correct
56 Correct 37 ms 9460 KB Output is correct
57 Correct 37 ms 9308 KB Output is correct
58 Incorrect 23 ms 9308 KB Output isn't correct
59 Incorrect 33 ms 9376 KB Output isn't correct
60 Correct 18 ms 9304 KB Output is correct
61 Correct 39 ms 9456 KB Output is correct
62 Correct 34 ms 9308 KB Output is correct
63 Correct 29 ms 9308 KB Output is correct
64 Incorrect 35 ms 9308 KB Output isn't correct
65 Correct 27 ms 9308 KB Output is correct
66 Correct 28 ms 9728 KB Output is correct
67 Correct 35 ms 9308 KB Output is correct
68 Correct 29 ms 9304 KB Output is correct
69 Correct 32 ms 9308 KB Output is correct
70 Correct 34 ms 9456 KB Output is correct
71 Correct 37 ms 9476 KB Output is correct
72 Incorrect 37 ms 9308 KB Output isn't correct
73 Correct 35 ms 9308 KB Output is correct
74 Correct 32 ms 9308 KB Output is correct
75 Correct 34 ms 9308 KB Output is correct
76 Correct 33 ms 9308 KB Output is correct
77 Incorrect 28 ms 9308 KB Output isn't correct
78 Incorrect 41 ms 9304 KB Output isn't correct
79 Correct 39 ms 9308 KB Output is correct
80 Incorrect 46 ms 9308 KB Output isn't correct
81 Correct 32 ms 9308 KB Output is correct
82 Correct 34 ms 9304 KB Output is correct
83 Correct 30 ms 9308 KB Output is correct
84 Correct 24 ms 9560 KB Output is correct
85 Correct 41 ms 9308 KB Output is correct
86 Correct 42 ms 9304 KB Output is correct
87 Correct 44 ms 9444 KB Output is correct
88 Correct 24 ms 9308 KB Output is correct
89 Incorrect 36 ms 9560 KB Output isn't correct
90 Correct 37 ms 9308 KB Output is correct
91 Incorrect 50 ms 9308 KB Output isn't correct
92 Correct 26 ms 9308 KB Output is correct
93 Correct 51 ms 9304 KB Output is correct
94 Correct 39 ms 9308 KB Output is correct
95 Incorrect 37 ms 9468 KB Output isn't correct
96 Correct 36 ms 9308 KB Output is correct
97 Correct 41 ms 9304 KB Output is correct
98 Incorrect 48 ms 9308 KB Output isn't correct
99 Correct 43 ms 9560 KB Output is correct
100 Correct 34 ms 9304 KB Output is correct
101 Correct 28 ms 9308 KB Output is correct
102 Correct 48 ms 9472 KB Output is correct