oj.uz

Submission #658311

# Submission time Handle Problem Language Result Execution time Memory
658311 2022-11-12T19:25:58 Z cristi_a Art Class (IOI13_artclass) C++17
87 / 100
 104 ms 6376 KB 
#include <bits/stdc++.h>
#include "artclass.h"
using namespace std;

int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
    int area = H * W;

    int nonclr = 0;
    int green = 0;

    int red_sum = 0;
    int green_sum = 0;
    int blue_sum = 0;
    for(int i=0; i<H; i++)
        for(int j=0; j<W; j++) {
            int r = R[i][j], g = G[i][j], b = B[i][j];
            if(abs(r-g) < 13 and abs(r-b) < 13 and abs(b-g) < 13) nonclr++;
            if((g-r) + (g-b) >= 20 and g-r > -10 and g-b > -10) green++;

            red_sum += r;
            green_sum += g;
            blue_sum += b;
        }
    double non_color_percent = ((1.00 * nonclr) / (1.00 * area)) * 100.00;
    double green_percent = (1.00 * green) / (1.00 * area) * 100.00;

    static const double sigmaB = 30;
    static const double sigmaN = 65;
    static const int dx[] = {0, 0, -1, 1};
    static const int dy[] = {1, -1, 0, 0};

    auto in = [&](int a, int b) {
        if(a < 0 or a >= H or b < 0 or b >= W) return false;
        return true;
    };

    int noise = 0;
    for(int i=0; i<H; i++)
        for(int j=0; j<W; j++)
            for(int k=0; k<4; k++) {
                int ni = i + dx[k];
                int nj = j + dy[k];
                if(!in(ni, nj)) continue;

                int difs =  abs(R[i][j] - R[ni][nj]) +
                            abs(G[i][j] - G[ni][nj]) +
                            abs(B[i][j] - B[ni][nj]);
                if(difs >= 200) noise++;
            }
    double noise_percent = 1.00 * noise / (1.00 * area) * 100.00;

    bool viz[500][500];
    auto BFS = [&](double sigma) {
        for(int i=0; i<H; i++)
            for(int j=0; j<W; j++)
                viz[i][j] = false;
        queue<pair<int, int>> q;
        int cnt = 0;
        for(int i=0; i<H; i++)
            for(int j=0; j<W; j++) {
                if(viz[i][j]) continue;

                cnt++;
                q.emplace(i, j);
                viz[i][j] = true;
                while(q.empty() == false) {
                    int x, y; tie(x, y) = q.front(); q.pop();
                    for(int k=0; k<4; k++) {
                        int nx = x + dx[k];
                        int ny = y + dy[k];
                        if(!in(nx, ny) or viz[nx][ny]) continue;

                        int difr = abs(R[x][y] - R[nx][ny]);
                        int difg = abs(G[x][y] - G[nx][ny]);
                        int difb = abs(R[x][y] - R[nx][ny]);
                        double avg = 1.00 * (difr + difg + difb) / 3.00;
                        if(avg <= sigma) {
                            q.emplace(nx, ny);
                            viz[nx][ny] = true;
                        }
                    }
                }
            }
        return cnt;
    };

    int blocks = BFS(sigmaB);
    int nuances = BFS(sigmaN);

    double red_avg = 1.00 * red_sum / (1.00 * area);
    double blue_avg = 1.00 * blue_sum / (1.00 * area);
    double green_avg = 1.00 * green_sum / (1.00 * area);
    double green_diff_sum = (green_avg - blue_avg) + (green_avg - red_avg);
    //cout << "\ngreen diff sum: " << green_diff_sum << "\n";
    //cout << "noise: " << noise_percent << "\n";


    if(noise_percent <= 1.00) return 4;
    if(noise_percent >= 35.00) return 3;
    if(green_diff_sum >= 20 and noise_percent <= 10.00) return 2;
    return 1;
}

Compilation message

artclass.cpp: In function 'int style(int, int, int (*)[500], int (*)[500], int (*)[500])':
artclass.cpp:24:12: warning: unused variable 'non_color_percent' [-Wunused-variable]
   24 |     double non_color_percent = ((1.00 * nonclr) / (1.00 * area)) * 100.00;
      |            ^~~~~~~~~~~~~~~~~
artclass.cpp:25:12: warning: unused variable 'green_percent' [-Wunused-variable]
   25 |     double green_percent = (1.00 * green) / (1.00 * area) * 100.00;
      |            ^~~~~~~~~~~~~
artclass.cpp:87:9: warning: unused variable 'blocks' [-Wunused-variable]
   87 |     int blocks = BFS(sigmaB);
      |         ^~~~~~
artclass.cpp:88:9: warning: unused variable 'nuances' [-Wunused-variable]
   88 |     int nuances = BFS(sigmaN);
      |         ^~~~~~~

Subtask #1
87.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 4820 KB Output is correct
2 Correct 77 ms 6268 KB Output is correct
3 Correct 68 ms 6136 KB Output is correct
4 Correct 58 ms 5992 KB Output is correct
5 Incorrect 75 ms 4532 KB Output isn't correct
6 Correct 69 ms 5932 KB Output is correct
7 Correct 72 ms 6272 KB Output is correct
8 Correct 37 ms 3348 KB Output is correct
9 Correct 104 ms 5896 KB Output is correct
10 Correct 44 ms 5068 KB Output is correct
11 Correct 64 ms 4836 KB Output is correct
12 Correct 57 ms 4908 KB Output is correct
13 Incorrect 76 ms 6164 KB Output isn't correct
14 Correct 67 ms 5716 KB Output is correct
15 Correct 59 ms 5164 KB Output is correct
16 Correct 59 ms 4648 KB Output is correct
17 Correct 55 ms 5364 KB Output is correct
18 Correct 53 ms 5512 KB Output is correct
19 Correct 74 ms 5556 KB Output is correct
20 Correct 64 ms 5020 KB Output is correct
21 Correct 64 ms 5528 KB Output is correct
22 Incorrect 58 ms 4716 KB Output isn't correct
23 Correct 64 ms 5572 KB Output is correct
24 Correct 60 ms 5100 KB Output is correct
25 Correct 60 ms 5580 KB Output is correct
26 Correct 62 ms 5168 KB Output is correct
27 Correct 34 ms 2772 KB Output is correct
28 Correct 57 ms 5708 KB Output is correct
29 Correct 52 ms 4504 KB Output is correct
30 Correct 53 ms 5492 KB Output is correct
31 Correct 62 ms 5628 KB Output is correct
32 Incorrect 47 ms 4020 KB Output isn't correct
33 Correct 35 ms 2748 KB Output is correct
34 Correct 62 ms 5324 KB Output is correct
35 Correct 47 ms 5224 KB Output is correct
36 Correct 53 ms 5316 KB Output is correct
37 Correct 53 ms 5464 KB Output is correct
38 Incorrect 54 ms 4456 KB Output isn't correct
39 Correct 50 ms 4428 KB Output is correct
40 Correct 85 ms 5604 KB Output is correct
41 Correct 44 ms 4880 KB Output is correct
42 Correct 16 ms 1672 KB Output is correct
43 Correct 39 ms 4888 KB Output is correct
44 Correct 48 ms 5028 KB Output is correct
45 Correct 64 ms 5836 KB Output is correct
46 Incorrect 47 ms 5100 KB Output isn't correct
47 Correct 57 ms 5960 KB Output is correct
48 Correct 46 ms 4848 KB Output is correct
49 Correct 43 ms 4016 KB Output is correct
50 Correct 51 ms 4276 KB Output is correct
51 Correct 41 ms 3316 KB Output is correct
52 Incorrect 56 ms 4812 KB Output isn't correct
53 Correct 40 ms 3268 KB Output is correct
54 Correct 34 ms 2640 KB Output is correct
55 Incorrect 56 ms 5444 KB Output isn't correct
56 Correct 60 ms 4568 KB Output is correct
57 Correct 61 ms 5632 KB Output is correct
58 Correct 50 ms 5276 KB Output is correct
59 Incorrect 57 ms 4584 KB Output isn't correct
60 Correct 63 ms 5516 KB Output is correct
61 Correct 35 ms 4636 KB Output is correct
62 Incorrect 58 ms 4932 KB Output isn't correct
63 Correct 57 ms 5308 KB Output is correct
64 Correct 57 ms 5520 KB Output is correct
65 Correct 69 ms 6128 KB Output is correct
66 Correct 45 ms 5468 KB Output is correct
67 Incorrect 96 ms 4564 KB Output isn't correct
68 Correct 68 ms 6060 KB Output is correct
69 Correct 45 ms 5180 KB Output is correct
70 Correct 58 ms 5568 KB Output is correct
71 Incorrect 84 ms 4908 KB Output isn't correct
72 Correct 73 ms 6144 KB Output is correct
73 Correct 59 ms 5600 KB Output is correct
74 Incorrect 51 ms 3876 KB Output isn't correct
75 Correct 72 ms 5624 KB Output is correct
76 Correct 43 ms 4920 KB Output is correct
77 Correct 55 ms 4668 KB Output is correct
78 Correct 42 ms 3576 KB Output is correct
79 Correct 58 ms 5736 KB Output is correct
80 Incorrect 56 ms 5020 KB Output isn't correct
81 Correct 78 ms 6240 KB Output is correct
82 Correct 63 ms 6024 KB Output is correct
83 Correct 56 ms 5096 KB Output is correct
84 Correct 98 ms 4996 KB Output is correct
85 Correct 54 ms 4548 KB Output is correct
86 Correct 76 ms 6176 KB Output is correct
87 Correct 54 ms 3876 KB Output is correct
88 Correct 52 ms 5352 KB Output is correct
89 Correct 60 ms 5560 KB Output is correct
90 Correct 39 ms 4880 KB Output is correct
91 Incorrect 54 ms 4692 KB Output isn't correct
92 Correct 74 ms 5948 KB Output is correct
93 Correct 45 ms 5208 KB Output is correct
94 Correct 72 ms 6376 KB Output is correct
95 Correct 56 ms 5192 KB Output is correct
96 Correct 16 ms 3924 KB Output is correct
97 Correct 54 ms 5324 KB Output is correct
98 Incorrect 63 ms 4812 KB Output isn't correct
99 Correct 81 ms 6120 KB Output is correct
100 Correct 41 ms 3276 KB Output is correct
101 Correct 45 ms 4936 KB Output is correct
102 Correct 79 ms 5360 KB Output is correct