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Submission #413594

# Submission time Handle Problem Language Result Execution time Memory
413594 2021-05-29T03:28:19 Z KoD Art Class (IOI13_artclass) C++17
62 / 100
 97 ms 11136 KB 
#include <bits/stdc++.h>
#include "artclass.h"

template <class T> using Vec = std::vector<T>;

struct UnionFind {
    Vec<int> par;
    int comp;
    UnionFind(const int n): par(n, -1), comp(n) {}
    int find(const int u) {
        return par[u] < 0 ? u : par[u] = find(par[u]);
    }    
    void merge(int x, int y) {
        x = find(x);
        y = find(y);
        if (x == y) {
            return;
        }
        if (par[x] > par[y]) {
            std::swap(x, y);
        }
        par[x] += par[y];
        par[y] = x;
        comp -= 1;
    }
};

int solve(const int N, const Vec<int> R, const Vec<int> G, const Vec<int> B, const std::array<int, 4> D) {
    UnionFind dsu(N);
    for (int i = 0; i < N; ++i) {
        for (int k = 0; k < 4; ++k) {
            const auto j = i + D[k];
            if (0 <= j and j < N) {
                if (std::abs(R[i] - R[j]) <= 20 and std::abs(G[i] - G[j]) <= 20 and std::abs(B[i] - B[j]) <= 20) {
                    dsu.merge(i, j);
                }
            }
        }
    }
    if (dsu.comp <= 60) {
        return 4;
    }
    if (dsu.comp >= 30000) {
        return 3;
    }
    int white = 0;
    for (int i = 0; i < N; ++i) {
        if (R[i] >= 200 and G[i] >= 200 and B[i] >= 200) {
            white += 1;
        }
    }
    if (white <= 10) {
        return 4;
    }
    if (white >= 50000) {
        return 1;
    }
    return dsu.comp <= 3000 ? 1 : 2;
}

int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
    const int N = H * W;
    Vec<int> r(N), g(N), b(N);
    for (int i = 0; i < H; ++i) {
        for (int j = 0; j < W; ++j) {
            r[i * W + j] = R[i][j];
            g[i * W + j] = G[i][j];
            b[i * W + j] = B[i][j];
        }
    }
    return solve(N, r, g, b, std::array<int, 4>{W, 1, -W, -1});
}

Subtask #1
62.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 8236 KB Output is correct
2 Correct 62 ms 9184 KB Output is correct
3 Correct 45 ms 8604 KB Output is correct
4 Correct 68 ms 10512 KB Output is correct
5 Incorrect 49 ms 8792 KB Output isn't correct
6 Correct 68 ms 9900 KB Output is correct
7 Correct 54 ms 9088 KB Output is correct
8 Correct 57 ms 8640 KB Output is correct
9 Correct 57 ms 9632 KB Output is correct
10 Incorrect 62 ms 9256 KB Output isn't correct
11 Correct 36 ms 5168 KB Output is correct
12 Correct 63 ms 9796 KB Output is correct
13 Incorrect 66 ms 10036 KB Output isn't correct
14 Correct 18 ms 5308 KB Output is correct
15 Correct 59 ms 9832 KB Output is correct
16 Correct 47 ms 8564 KB Output is correct
17 Incorrect 63 ms 9796 KB Output isn't correct
18 Correct 60 ms 9908 KB Output is correct
19 Incorrect 64 ms 9920 KB Output isn't correct
20 Correct 63 ms 10132 KB Output is correct
21 Incorrect 65 ms 10324 KB Output isn't correct
22 Incorrect 63 ms 9412 KB Output isn't correct
23 Correct 58 ms 8900 KB Output is correct
24 Correct 56 ms 8576 KB Output is correct
25 Incorrect 65 ms 9428 KB Output isn't correct
26 Correct 57 ms 9160 KB Output is correct
27 Incorrect 67 ms 9780 KB Output isn't correct
28 Correct 74 ms 11136 KB Output is correct
29 Correct 47 ms 7204 KB Output is correct
30 Correct 35 ms 5404 KB Output is correct
31 Correct 79 ms 11008 KB Output is correct
32 Correct 66 ms 9660 KB Output is correct
33 Correct 68 ms 10692 KB Output is correct
34 Correct 73 ms 11016 KB Output is correct
35 Correct 65 ms 7648 KB Output is correct
36 Incorrect 77 ms 11016 KB Output isn't correct
37 Correct 69 ms 10564 KB Output is correct
38 Incorrect 65 ms 8900 KB Output isn't correct
39 Correct 36 ms 7576 KB Output is correct
40 Correct 42 ms 8132 KB Output is correct
41 Correct 48 ms 8268 KB Output is correct
42 Correct 61 ms 9464 KB Output is correct
43 Correct 60 ms 9844 KB Output is correct
44 Correct 67 ms 9412 KB Output is correct
45 Correct 48 ms 7496 KB Output is correct
46 Correct 62 ms 8860 KB Output is correct
47 Incorrect 45 ms 8360 KB Output isn't correct
48 Incorrect 58 ms 9572 KB Output isn't correct
49 Correct 69 ms 8876 KB Output is correct
50 Correct 74 ms 11076 KB Output is correct
51 Correct 72 ms 10856 KB Output is correct
52 Incorrect 59 ms 8600 KB Output isn't correct
53 Correct 58 ms 8636 KB Output is correct
54 Correct 70 ms 9928 KB Output is correct
55 Correct 89 ms 10452 KB Output is correct
56 Correct 70 ms 9792 KB Output is correct
57 Incorrect 60 ms 9284 KB Output isn't correct
58 Correct 68 ms 9752 KB Output is correct
59 Correct 50 ms 8968 KB Output is correct
60 Correct 66 ms 9652 KB Output is correct
61 Correct 65 ms 9576 KB Output is correct
62 Correct 63 ms 10152 KB Output is correct
63 Correct 48 ms 6340 KB Output is correct
64 Incorrect 80 ms 11076 KB Output isn't correct
65 Incorrect 78 ms 9732 KB Output isn't correct
66 Correct 72 ms 11076 KB Output is correct
67 Correct 40 ms 6212 KB Output is correct
68 Correct 40 ms 6220 KB Output is correct
69 Correct 73 ms 10976 KB Output is correct
70 Incorrect 61 ms 9808 KB Output isn't correct
71 Correct 72 ms 10948 KB Output is correct
72 Incorrect 56 ms 8756 KB Output isn't correct
73 Incorrect 40 ms 6600 KB Output isn't correct
74 Correct 58 ms 9756 KB Output is correct
75 Correct 49 ms 8496 KB Output is correct
76 Correct 42 ms 6220 KB Output is correct
77 Correct 62 ms 9172 KB Output is correct
78 Correct 59 ms 8808 KB Output is correct
79 Correct 60 ms 9520 KB Output is correct
80 Incorrect 48 ms 7544 KB Output isn't correct
81 Incorrect 16 ms 2724 KB Output isn't correct
82 Correct 73 ms 11028 KB Output is correct
83 Correct 65 ms 10456 KB Output is correct
84 Correct 61 ms 8856 KB Output is correct
85 Correct 63 ms 9844 KB Output is correct
86 Incorrect 74 ms 11076 KB Output isn't correct
87 Correct 57 ms 8696 KB Output is correct
88 Correct 72 ms 9480 KB Output is correct
89 Correct 41 ms 7832 KB Output is correct
90 Correct 49 ms 7280 KB Output is correct
91 Incorrect 61 ms 9036 KB Output isn't correct
92 Correct 62 ms 9412 KB Output is correct
93 Correct 57 ms 8420 KB Output is correct
94 Correct 33 ms 5212 KB Output is correct
95 Correct 60 ms 9860 KB Output is correct
96 Correct 47 ms 8256 KB Output is correct
97 Incorrect 67 ms 9972 KB Output isn't correct
98 Incorrect 53 ms 8928 KB Output isn't correct
99 Correct 58 ms 9788 KB Output is correct
100 Incorrect 97 ms 10932 KB Output isn't correct
101 Correct 71 ms 9100 KB Output is correct
102 Correct 63 ms 10128 KB Output is correct