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답안 #330367

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
330367 2020-11-25T01:40:38 Z fishy15 Growing Vegetable is Fun 3 (JOI19_ho_t3) C++14
100 / 100
 274 ms 115052 KB 
#include <iostream>
#include <iomanip>
#include <fstream>
#include <vector>
#include <array>
#include <algorithm>
#include <utility>
#include <map>
#include <queue>
#include <set>
#include <cmath>
#include <cstdio>
#include <cstring>

#define ll long long
#define ld long double
#define eps 1e-8
#define MOD 1000000007

#define INF 0x3f3f3f3f
#define INFLL 0x3f3f3f3f3f3f3f3f

// change if necessary
#define MAXN 410

using namespace std;

int n;
string s;
bool vis[MAXN][MAXN][MAXN][3];
int dp[MAXN][MAXN][MAXN][3];
int pref[MAXN][3];
vector<int> idx[3];

int ckmin(int &a, int b) {
    return a = min(a, b);
}

// so far have r, g, y for each color
// and last char is last
int solve(int r, int g, int y, int last) {
    if (r < 0 || g < 0 || y < 0) return INF;
    if (vis[r][g][y][last]) return dp[r][g][y][last];
    vis[r][g][y][last] = true;
    dp[r][g][y][last] = INF;
    if (r == 0 && g == 0 && y == 0) return dp[r][g][y][last] = 0;

    int pr = r;
    int pg = g;
    int py = y;

    if (last == 0) pr--;
    else if (last == 1) pg--;
    else py--;

    if (pr < 0 || pg < 0 || py < 0) return dp[r][g][y][last];

    int to_move = pr + pg + py;
    if (last == 0) {
        int cur = idx[0][r - 1];
        to_move = cur - to_move;
        to_move += max(0, g - pref[cur][1]);
        to_move += max(0, y - pref[cur][2]);
    } else if (last == 1) {
        int cur = idx[1][g - 1];
        to_move = cur - to_move;
        to_move += max(0, r - pref[cur][0]);
        to_move += max(0, y - pref[cur][2]);
    } else {
        int cur = idx[2][y - 1];
        to_move = cur - to_move;
        to_move += max(0, r - pref[cur][0]);
        to_move += max(0, g - pref[cur][1]);
    }

    for (int i = 0; i < 3; i++) {
        if (i == last) continue;
        ckmin(dp[r][g][y][last], solve(pr, pg, py, i) + to_move);
    }

    return dp[r][g][y][last];
}

int main() {
    /* cin.tie(0)->sync_with_stdio(0); */

    cin >> n;
    cin >> s;

    for (int i = 0; i < n; i++) {
        if (i) {
            pref[i][0] = pref[i - 1][0];
            pref[i][1] = pref[i - 1][1];
            pref[i][2] = pref[i - 1][2];
        }
        switch (s[i]) {
            case 'R': 
                pref[i][0]++; 
                idx[0].push_back(i); 
                break;
            case 'G': 
                pref[i][1]++; 
                idx[1].push_back(i); 
                break;
            case 'Y': 
                pref[i][2]++; 
                idx[2].push_back(i); 
                break;
        }
    }

    int r = pref[n - 1][0];
    int g = pref[n - 1][1];
    int y = pref[n - 1][2];

    int ans = min({solve(r, g, y, 0), solve(r, g, y, 1), solve(r, g, y, 2)});
    if (ans == INF) {
        cout << "-1\n";
    } else {
        cout << ans << '\n';
    }

    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 620 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 620 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 620 KB Output is correct
12 Correct 1 ms 620 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 620 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 364 KB Output is correct

Subtask #2
55.0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 620 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 620 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 620 KB Output is correct
12 Correct 1 ms 620 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 620 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 3 ms 2924 KB Output is correct
19 Correct 2 ms 2412 KB Output is correct
20 Correct 2 ms 2796 KB Output is correct
21 Correct 2 ms 3052 KB Output is correct
22 Correct 2 ms 2156 KB Output is correct
23 Correct 2 ms 2668 KB Output is correct
24 Correct 2 ms 2028 KB Output is correct
25 Correct 1 ms 1132 KB Output is correct
26 Correct 1 ms 1260 KB Output is correct
27 Correct 3 ms 3052 KB Output is correct
28 Correct 2 ms 2924 KB Output is correct
29 Correct 3 ms 2796 KB Output is correct
30 Correct 3 ms 2816 KB Output is correct
31 Correct 2 ms 2540 KB Output is correct
32 Correct 2 ms 2924 KB Output is correct
33 Correct 1 ms 1388 KB Output is correct
34 Correct 1 ms 1772 KB Output is correct
35 Correct 2 ms 2924 KB Output is correct
36 Correct 2 ms 2412 KB Output is correct
37 Correct 2 ms 2156 KB Output is correct
38 Correct 2 ms 2540 KB Output is correct
39 Correct 2 ms 2924 KB Output is correct
40 Correct 1 ms 492 KB Output is correct
41 Correct 1 ms 1004 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 3 ms 4972 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 3 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 3 ms 4972 KB Output is correct
8 Correct 3 ms 4972 KB Output is correct
9 Correct 3 ms 4972 KB Output is correct
10 Correct 3 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 2 ms 2796 KB Output is correct
13 Correct 3 ms 3564 KB Output is correct
14 Correct 3 ms 4204 KB Output is correct
15 Correct 3 ms 4972 KB Output is correct
16 Correct 3 ms 4972 KB Output is correct

Subtask #4
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 620 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 620 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 620 KB Output is correct
12 Correct 1 ms 620 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 620 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 3 ms 2924 KB Output is correct
19 Correct 2 ms 2412 KB Output is correct
20 Correct 2 ms 2796 KB Output is correct
21 Correct 2 ms 3052 KB Output is correct
22 Correct 2 ms 2156 KB Output is correct
23 Correct 2 ms 2668 KB Output is correct
24 Correct 2 ms 2028 KB Output is correct
25 Correct 1 ms 1132 KB Output is correct
26 Correct 1 ms 1260 KB Output is correct
27 Correct 3 ms 3052 KB Output is correct
28 Correct 2 ms 2924 KB Output is correct
29 Correct 3 ms 2796 KB Output is correct
30 Correct 3 ms 2816 KB Output is correct
31 Correct 2 ms 2540 KB Output is correct
32 Correct 2 ms 2924 KB Output is correct
33 Correct 1 ms 1388 KB Output is correct
34 Correct 1 ms 1772 KB Output is correct
35 Correct 2 ms 2924 KB Output is correct
36 Correct 2 ms 2412 KB Output is correct
37 Correct 2 ms 2156 KB Output is correct
38 Correct 2 ms 2540 KB Output is correct
39 Correct 2 ms 2924 KB Output is correct
40 Correct 1 ms 492 KB Output is correct
41 Correct 1 ms 1004 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 4 ms 4972 KB Output is correct
44 Correct 3 ms 4972 KB Output is correct
45 Correct 3 ms 4972 KB Output is correct
46 Correct 3 ms 4972 KB Output is correct
47 Correct 4 ms 4972 KB Output is correct
48 Correct 3 ms 4972 KB Output is correct
49 Correct 3 ms 4972 KB Output is correct
50 Correct 3 ms 4972 KB Output is correct
51 Correct 3 ms 4972 KB Output is correct
52 Correct 4 ms 4972 KB Output is correct
53 Correct 2 ms 2796 KB Output is correct
54 Correct 3 ms 3564 KB Output is correct
55 Correct 3 ms 4204 KB Output is correct
56 Correct 3 ms 4972 KB Output is correct
57 Correct 3 ms 4972 KB Output is correct
58 Correct 249 ms 93872 KB Output is correct
59 Correct 253 ms 115052 KB Output is correct
60 Correct 234 ms 107264 KB Output is correct
61 Correct 253 ms 104172 KB Output is correct
62 Correct 8 ms 12268 KB Output is correct
63 Correct 15 ms 21100 KB Output is correct
64 Correct 59 ms 65516 KB Output is correct
65 Correct 116 ms 92644 KB Output is correct
66 Correct 261 ms 105580 KB Output is correct
67 Correct 230 ms 100844 KB Output is correct
68 Correct 274 ms 108652 KB Output is correct
69 Correct 249 ms 104940 KB Output is correct
70 Correct 262 ms 112364 KB Output is correct
71 Correct 238 ms 102124 KB Output is correct
72 Correct 15 ms 14316 KB Output is correct
73 Correct 2 ms 3180 KB Output is correct