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Submission #391336

# Submission time Handle Problem Language Result Execution time Memory
391336 2021-04-18T15:18:25 Z timmyfeng Growing Vegetable is Fun 3 (JOI19_ho_t3) C++17
100 / 100
 92 ms 162932 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 401;

int count_r[N], count_g[N], count_y[N];
int where_r[N], where_g[N], where_y[N];
int swaps[N][N][N][3];

void set_min(int &a, int b) {
    a = min(a, b);
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n;
    string s;
    cin >> n >> s;

    for (int i = 0; i < n; ++i) {
        count_r[i + 1] = count_r[i] + (s[i] == 'R');
        count_g[i + 1] = count_g[i] + (s[i] == 'G');
        count_y[i + 1] = count_y[i] + (s[i] == 'Y');

        if (s[i] == 'R') {
            where_r[count_r[i]] = i;
        } else if (s[i] == 'G') {
            where_g[count_g[i]] = i;
        } else {
            where_y[count_y[i]] = i;
        }
    }

    for (int r = 0; r <= count_r[n]; ++r) {
        for (int g = 0; g <= count_g[n]; ++g) {
            for (int y = 0; y <= count_y[n]; ++y) {
                for (int i = 0; i < 3; ++i) {
                    if (r + g + y > 0) {
                        swaps[r][g][y][i] = INT_MAX;
                    }
                }
            }
        }
    }

    for (int r = 0; r <= count_r[n]; ++r) {
        for (int g = 0; g <= count_g[n]; ++g) {
            for (int y = 0; y <= count_y[n]; ++y) {
                for (int i = 0; i < 3; ++i) {
                    if (swaps[r][g][y][i] < INT_MAX) {
                        if (i != 0 && r < count_r[n]) {
                            set_min(swaps[r + 1][g][y][0], swaps[r][g][y][i] +
                                max(0, count_g[where_r[r]] - g) +
                                max(0, count_y[where_r[r]] - y)
                            );
                        }

                        if (i != 1 && g < count_g[n]) {
                            set_min(swaps[r][g + 1][y][1], swaps[r][g][y][i] +
                                max(0, count_r[where_g[g]] - r) +
                                max(0, count_y[where_g[g]] - y)
                            );
                        }

                        if (i != 2 && y < count_y[n]) {
                            set_min(swaps[r][g][y + 1][2], swaps[r][g][y][i] +
                                max(0, count_r[where_y[y]] - r) +
                                max(0, count_g[where_y[y]] - g)
                            );
                        }
                    }
                }
            }
        }
    }

    int ans = INT_MAX;
    for (int i = 0; i < 3; ++i) {
        set_min(ans, swaps[count_r[n]][count_g[n]][count_y[n]][i]);
    }

    cout << (ans < INT_MAX ? ans : -1) << "\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 1 ms 452 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 460 KB Output is correct
17 Correct 1 ms 332 KB Output is correct

Subtask #2
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 1 ms 452 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 460 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 2 ms 2252 KB Output is correct
19 Correct 1 ms 1868 KB Output is correct
20 Correct 2 ms 2244 KB Output is correct
21 Correct 2 ms 2380 KB Output is correct
22 Correct 1 ms 1600 KB Output is correct
23 Correct 2 ms 2124 KB Output is correct
24 Correct 1 ms 1612 KB Output is correct
25 Correct 2 ms 3916 KB Output is correct
26 Correct 2 ms 4172 KB Output is correct
27 Correct 2 ms 3020 KB Output is correct
28 Correct 2 ms 2252 KB Output is correct
29 Correct 2 ms 2252 KB Output is correct
30 Correct 2 ms 2256 KB Output is correct
31 Correct 1 ms 1984 KB Output is correct
32 Correct 2 ms 2380 KB Output is correct
33 Correct 2 ms 3788 KB Output is correct
34 Correct 2 ms 3532 KB Output is correct
35 Correct 2 ms 2636 KB Output is correct
36 Correct 1 ms 1868 KB Output is correct
37 Correct 1 ms 1740 KB Output is correct
38 Correct 2 ms 2124 KB Output is correct
39 Correct 2 ms 2252 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 2124 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 85 ms 162864 KB Output is correct
3 Correct 78 ms 162116 KB Output is correct
4 Correct 91 ms 162884 KB Output is correct
5 Correct 77 ms 162864 KB Output is correct
6 Correct 78 ms 162932 KB Output is correct
7 Correct 80 ms 162092 KB Output is correct
8 Correct 77 ms 162056 KB Output is correct
9 Correct 76 ms 161352 KB Output is correct
10 Correct 77 ms 162892 KB Output is correct
11 Correct 79 ms 162896 KB Output is correct
12 Correct 21 ms 43980 KB Output is correct
13 Correct 40 ms 77104 KB Output is correct
14 Correct 55 ms 111336 KB Output is correct
15 Correct 78 ms 162928 KB Output is correct
16 Correct 78 ms 162884 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 1 ms 452 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 460 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 2 ms 2252 KB Output is correct
19 Correct 1 ms 1868 KB Output is correct
20 Correct 2 ms 2244 KB Output is correct
21 Correct 2 ms 2380 KB Output is correct
22 Correct 1 ms 1600 KB Output is correct
23 Correct 2 ms 2124 KB Output is correct
24 Correct 1 ms 1612 KB Output is correct
25 Correct 2 ms 3916 KB Output is correct
26 Correct 2 ms 4172 KB Output is correct
27 Correct 2 ms 3020 KB Output is correct
28 Correct 2 ms 2252 KB Output is correct
29 Correct 2 ms 2252 KB Output is correct
30 Correct 2 ms 2256 KB Output is correct
31 Correct 1 ms 1984 KB Output is correct
32 Correct 2 ms 2380 KB Output is correct
33 Correct 2 ms 3788 KB Output is correct
34 Correct 2 ms 3532 KB Output is correct
35 Correct 2 ms 2636 KB Output is correct
36 Correct 1 ms 1868 KB Output is correct
37 Correct 1 ms 1740 KB Output is correct
38 Correct 2 ms 2124 KB Output is correct
39 Correct 2 ms 2252 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 2124 KB Output is correct
42 Correct 1 ms 320 KB Output is correct
43 Correct 85 ms 162864 KB Output is correct
44 Correct 78 ms 162116 KB Output is correct
45 Correct 91 ms 162884 KB Output is correct
46 Correct 77 ms 162864 KB Output is correct
47 Correct 78 ms 162932 KB Output is correct
48 Correct 80 ms 162092 KB Output is correct
49 Correct 77 ms 162056 KB Output is correct
50 Correct 76 ms 161352 KB Output is correct
51 Correct 77 ms 162892 KB Output is correct
52 Correct 79 ms 162896 KB Output is correct
53 Correct 21 ms 43980 KB Output is correct
54 Correct 40 ms 77104 KB Output is correct
55 Correct 55 ms 111336 KB Output is correct
56 Correct 78 ms 162928 KB Output is correct
57 Correct 78 ms 162884 KB Output is correct
58 Correct 73 ms 75384 KB Output is correct
59 Correct 87 ms 95740 KB Output is correct
60 Correct 80 ms 86988 KB Output is correct
61 Correct 81 ms 84048 KB Output is correct
62 Correct 82 ms 160580 KB Output is correct
63 Correct 85 ms 160196 KB Output is correct
64 Correct 90 ms 150084 KB Output is correct
65 Correct 92 ms 138564 KB Output is correct
66 Correct 82 ms 85240 KB Output is correct
67 Correct 76 ms 82040 KB Output is correct
68 Correct 81 ms 87852 KB Output is correct
69 Correct 79 ms 84548 KB Output is correct
70 Correct 83 ms 91544 KB Output is correct
71 Correct 79 ms 83056 KB Output is correct
72 Correct 27 ms 41176 KB Output is correct
73 Correct 3 ms 2764 KB Output is correct