oj.uz

Submission #920415

# Submission time Handle Problem Language Result Execution time Memory
920415 2024-02-02T14:20:46 Z vjudge1 Growing Vegetable is Fun 3 (JOI19_ho_t3) C++17
100 / 100
 268 ms 134992 KB 
#include <bits/stdc++.h>
using i64 = long long;
#define all(x) (x).begin(), (x).end()

const int N = 400 + 5;
const int INF = 1E9;

int n, pre[3][N][3];
std::vector<int> idxs[3];
std::vector<std::vector<std::vector<std::vector<int>>>> dp;

std::vector<int>::iterator it;

int f(int a, int b, int c, int last) {
	if(dp[a][b][c][last] != -1) {
		return dp[a][b][c][last];
	} else if(a + b + c == n) {
		return 0;
	}

	int res = INF;
	if(a != idxs[0].size() && last != 0) {
		int cost = 0;
		cost += std::max(0, pre[0][a][1] - b);
		cost += std::max(0, pre[0][a][2] - c);

		res = std::min(res, f(a + 1, b, c, 0) + cost);
	}

	if(b != idxs[1].size() && last != 1) {
		int cost = 0;
		cost += std::max(0, pre[1][b][0] - a);
		cost += std::max(0, pre[1][b][2] - c);

		res = std::min(res, f(a, b + 1, c, 1) + cost);
	}

	if(c != idxs[2].size() && last != 2) {
		int cost = 0;
		cost += std::max(0, pre[2][c][0] - a);
		cost += std::max(0, pre[2][c][1] - b);

		res = std::min(res, f(a, b, c + 1, 2) + cost);
	}

	return dp[a][b][c][last] = res;
}

void solve() {
	std::string s;
	std::cin >> n >> s;

	for(int i = 0; i < n; i++) {
		if(s[i] == 'R') {
			idxs[0].emplace_back(i);
		} else if(s[i] == 'G') {
			idxs[1].emplace_back(i);
		} else {
			idxs[2].emplace_back(i);
		}
	}

	dp.assign(idxs[0].size() + 1, std::vector (idxs[1].size() + 1, std::vector (idxs[2].size() + 1, std::vector (4, -1))));

	for(int i = 0; i < idxs[0].size(); i++) {
		pre[0][i][1] = std::upper_bound(all(idxs[1]), idxs[0][i]) - idxs[1].begin();
		pre[0][i][2] = std::upper_bound(all(idxs[2]), idxs[0][i]) - idxs[2].begin();
	}

	for(int i = 0; i < idxs[1].size(); i++) {
		pre[1][i][0] = std::upper_bound(all(idxs[0]), idxs[1][i]) - idxs[0].begin();
		pre[1][i][2] = std::upper_bound(all(idxs[2]), idxs[1][i]) - idxs[2].begin();
	}

	for(int i = 0; i < idxs[2].size(); i++) {
		pre[2][i][0] = std::upper_bound(all(idxs[0]), idxs[2][i]) - idxs[0].begin();
		pre[2][i][1] = std::upper_bound(all(idxs[1]), idxs[2][i]) - idxs[1].begin();
	}

	int ans = f(0, 0, 0, 3);
	if(ans != INF) {
		std::cout << ans;
	} else {
		std::cout << -1;
	}

	return;
}

signed main() {
    #ifdef LOCAL
        freopen("in.txt", "r", stdin);
        freopen("out.txt", "w", stdout);
    #endif

    std::ios_base::sync_with_stdio(false);
    std::cin.tie(NULL); std::cout.tie(NULL);

    int t = 1; //std::cin >> t;
    for(int i = 1; i <= t; i++) {
        solve();
    }

    return 0;
}

Compilation message

joi2019_ho_t3.cpp: In function 'int f(int, int, int, int)':
joi2019_ho_t3.cpp:22:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |  if(a != idxs[0].size() && last != 0) {
      |     ~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:30:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |  if(b != idxs[1].size() && last != 1) {
      |     ~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:38:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |  if(c != idxs[2].size() && last != 2) {
      |     ~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp: In function 'void solve()':
joi2019_ho_t3.cpp:65:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |  for(int i = 0; i < idxs[0].size(); i++) {
      |                 ~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:70:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |  for(int i = 0; i < idxs[1].size(); i++) {
      |                 ~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:75:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |  for(int i = 0; i < idxs[2].size(); i++) {
      |                 ~~^~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct

Subtask #2
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 1 ms 856 KB Output is correct
19 Correct 1 ms 856 KB Output is correct
20 Correct 1 ms 856 KB Output is correct
21 Correct 1 ms 856 KB Output is correct
22 Correct 1 ms 856 KB Output is correct
23 Correct 1 ms 856 KB Output is correct
24 Correct 1 ms 1112 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 860 KB Output is correct
28 Correct 1 ms 860 KB Output is correct
29 Correct 1 ms 856 KB Output is correct
30 Correct 1 ms 856 KB Output is correct
31 Correct 1 ms 860 KB Output is correct
32 Correct 1 ms 856 KB Output is correct
33 Correct 1 ms 600 KB Output is correct
34 Correct 1 ms 600 KB Output is correct
35 Correct 1 ms 856 KB Output is correct
36 Correct 1 ms 860 KB Output is correct
37 Correct 1 ms 856 KB Output is correct
38 Correct 1 ms 856 KB Output is correct
39 Correct 1 ms 856 KB Output is correct
40 Correct 1 ms 548 KB Output is correct
41 Correct 1 ms 600 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 4 ms 4184 KB Output is correct
3 Correct 4 ms 4184 KB Output is correct
4 Correct 4 ms 3932 KB Output is correct
5 Correct 4 ms 3928 KB Output is correct
6 Correct 4 ms 3928 KB Output is correct
7 Correct 4 ms 3928 KB Output is correct
8 Correct 3 ms 3928 KB Output is correct
9 Correct 4 ms 3928 KB Output is correct
10 Correct 4 ms 3928 KB Output is correct
11 Correct 4 ms 3928 KB Output is correct
12 Correct 1 ms 1368 KB Output is correct
13 Correct 2 ms 2136 KB Output is correct
14 Correct 3 ms 2652 KB Output is correct
15 Correct 4 ms 3928 KB Output is correct
16 Correct 4 ms 3932 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 1 ms 856 KB Output is correct
19 Correct 1 ms 856 KB Output is correct
20 Correct 1 ms 856 KB Output is correct
21 Correct 1 ms 856 KB Output is correct
22 Correct 1 ms 856 KB Output is correct
23 Correct 1 ms 856 KB Output is correct
24 Correct 1 ms 1112 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 860 KB Output is correct
28 Correct 1 ms 860 KB Output is correct
29 Correct 1 ms 856 KB Output is correct
30 Correct 1 ms 856 KB Output is correct
31 Correct 1 ms 860 KB Output is correct
32 Correct 1 ms 856 KB Output is correct
33 Correct 1 ms 600 KB Output is correct
34 Correct 1 ms 600 KB Output is correct
35 Correct 1 ms 856 KB Output is correct
36 Correct 1 ms 860 KB Output is correct
37 Correct 1 ms 856 KB Output is correct
38 Correct 1 ms 856 KB Output is correct
39 Correct 1 ms 856 KB Output is correct
40 Correct 1 ms 548 KB Output is correct
41 Correct 1 ms 600 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 4 ms 4184 KB Output is correct
44 Correct 4 ms 4184 KB Output is correct
45 Correct 4 ms 3932 KB Output is correct
46 Correct 4 ms 3928 KB Output is correct
47 Correct 4 ms 3928 KB Output is correct
48 Correct 4 ms 3928 KB Output is correct
49 Correct 3 ms 3928 KB Output is correct
50 Correct 4 ms 3928 KB Output is correct
51 Correct 4 ms 3928 KB Output is correct
52 Correct 4 ms 3928 KB Output is correct
53 Correct 1 ms 1368 KB Output is correct
54 Correct 2 ms 2136 KB Output is correct
55 Correct 3 ms 2652 KB Output is correct
56 Correct 4 ms 3928 KB Output is correct
57 Correct 4 ms 3932 KB Output is correct
58 Correct 261 ms 133456 KB Output is correct
59 Correct 253 ms 133464 KB Output is correct
60 Correct 249 ms 132312 KB Output is correct
61 Correct 254 ms 133756 KB Output is correct
62 Correct 12 ms 12376 KB Output is correct
63 Correct 20 ms 20824 KB Output is correct
64 Correct 82 ms 66760 KB Output is correct
65 Correct 138 ms 95568 KB Output is correct
66 Correct 257 ms 131920 KB Output is correct
67 Correct 259 ms 132140 KB Output is correct
68 Correct 234 ms 133712 KB Output is correct
69 Correct 259 ms 134992 KB Output is correct
70 Correct 243 ms 134152 KB Output is correct
71 Correct 268 ms 130980 KB Output is correct
72 Correct 36 ms 34128 KB Output is correct
73 Correct 9 ms 10584 KB Output is correct