oj.uz

답안 #235512

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
235512 2020-05-28T11:51:37 Z davitmarg Growing Vegetable is Fun 3 (JOI19_ho_t3) C++17
60 / 100
 500 ms 776228 KB 
/*DavitMarg*/
#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>
#include <cstring>
#include <map>
#include <unordered_map>
#include <set>
#include <queue>
#include <iomanip>
#include <bitset>
#include <stack>
#include <cassert>
#include <iterator>
#include <fstream>
#define mod 1000000007ll
#define LL long long
#define LD long double
#define MP make_pair
#define PB push_back
#define all(v) v.begin(), v.end()
#define fastIO ios::sync_with_stdio(false); cin.tie(0)
using namespace std;

const int N = 410;

int pr[3][N], n, dp[N][N][N][3];
vector<int> pos[3];
string s;

inline int ind(char x)
{
	if (x == 'R')
		return 0;
	if (x == 'G')
		return 1;
	return 2;
}

int get(int i, int l, int r)
{
	return max(0, pr[i][r] - pr[i][l - 1]);
}

int calc(int x, int a, int b, int c)
{
	a++;
	b++;
	c++;

	int p;
	if (x == 0)
		p = a;
	else if (x == 1)
		p = b;
	else
		p = c;

	int res = 0;
	if (p > pos[x].size())
		return mod;

	if (x != 0 && a <= pos[0].size())
		res += get(0, pos[0][a - 1], pos[x][p - 1]);
	if (x != 1 && b <= pos[1].size())
		res += get(1, pos[1][b - 1], pos[x][p - 1]);
	if (x != 2 && c <= pos[2].size())
		res += get(2, pos[2][c - 1], pos[x][p - 1]);
	return res;
}


void optm()
{
	unordered_map<char, int> c;
	for (int i = 1; i <= n; i++)
		c[s[i]]++;
	vector<pair<int, char>> v;
	v.push_back(MP(c['R'], 'R'));
	v.push_back(MP(c['G'], 'G'));
	v.push_back(MP(c['Y'], 'Y'));
	sort(all(v));
	for (int i = 1; i <= n; i++)
		if (s[i] == 'R')
			s[i] = v[0].second;
		else if (s[i] == 'G')
			s[i] = v[1].second;
		else
			s[i] = v[2].second;
}

int main()
{
	fastIO;
	cin >> n;
	cin >> s;
	s = "#" + s;
	optm();
	for (int i = 1; i <= n; i++)
	{
		for (int j = 0; j < 3; j++)
			pr[j][i] = pr[j][i - 1];
		pr[ind(s[i])][i]++;
		pos[ind(s[i])].push_back(i);
	}

	for (int i = 0; i <= n; i++)
		for (int j = 0; j <= n; j++)
			for (int k = 0; k <= n; k++)
				dp[i][j][k][0] = dp[i][j][k][1] = dp[i][j][k][2] = mod;


	dp[0][0][0][0] = dp[0][0][0][1] = dp[0][0][0][2] = 0;
	for (int k = 0; k < n; k++)
		for (int a = 0; a <= k && a <= pos[0].size(); a++)
			for (int b = 0; a + b <= k && b <= pos[1].size(); b++)
			{
				int c = k - a - b;

				for (int j = 0; j < 3; j++)
				{
					int val = calc(j, a, b, c);
					for (int i = 0; i < 3; i++)
					{
						if (i == j)
							continue;
						dp[a + (j == 0)][b + (j == 1)][c + (j == 2)][j] = min(dp[a][b][c][i] + val, dp[a + (j == 0)][b + (j == 1)][c + (j == 2)][j]);
					}
				}
			}


	int ans = min(dp[pr[0][n]][pr[1][n]][pr[2][n]][0], min(dp[pr[0][n]][pr[1][n]][pr[2][n]][1], dp[pr[0][n]][pr[1][n]][pr[2][n]][2]));
	if (ans == mod)
		ans = -1;
	cout << ans << endl;

	return 0;
}

/*




*/

Compilation message

joi2019_ho_t3.cpp: In function 'int calc(int, int, int, int)':
joi2019_ho_t3.cpp:62:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (p > pos[x].size())
      ~~^~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:65:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (x != 0 && a <= pos[0].size())
                ~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:67:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (x != 1 && b <= pos[1].size())
                ~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:69:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (x != 2 && c <= pos[2].size())
                ~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:117:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int a = 0; a <= k && a <= pos[0].size(); a++)
                             ~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:118:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int b = 0; a + b <= k && b <= pos[1].size(); b++)
                                  ~~^~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 896 KB Output is correct
5 Correct 5 ms 1408 KB Output is correct
6 Correct 6 ms 1536 KB Output is correct
7 Correct 5 ms 1536 KB Output is correct
8 Correct 5 ms 1408 KB Output is correct
9 Correct 5 ms 1536 KB Output is correct
10 Correct 5 ms 1536 KB Output is correct
11 Correct 5 ms 1536 KB Output is correct
12 Correct 5 ms 1408 KB Output is correct
13 Correct 5 ms 1408 KB Output is correct
14 Correct 5 ms 1408 KB Output is correct
15 Correct 6 ms 1536 KB Output is correct
16 Correct 6 ms 1408 KB Output is correct
17 Correct 5 ms 1280 KB Output is correct

Subtask #2
55.0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 896 KB Output is correct
5 Correct 5 ms 1408 KB Output is correct
6 Correct 6 ms 1536 KB Output is correct
7 Correct 5 ms 1536 KB Output is correct
8 Correct 5 ms 1408 KB Output is correct
9 Correct 5 ms 1536 KB Output is correct
10 Correct 5 ms 1536 KB Output is correct
11 Correct 5 ms 1536 KB Output is correct
12 Correct 5 ms 1408 KB Output is correct
13 Correct 5 ms 1408 KB Output is correct
14 Correct 5 ms 1408 KB Output is correct
15 Correct 6 ms 1536 KB Output is correct
16 Correct 6 ms 1408 KB Output is correct
17 Correct 5 ms 1280 KB Output is correct
18 Correct 13 ms 18080 KB Output is correct
19 Correct 13 ms 18176 KB Output is correct
20 Correct 14 ms 18048 KB Output is correct
21 Correct 13 ms 18048 KB Output is correct
22 Correct 13 ms 18048 KB Output is correct
23 Correct 14 ms 18176 KB Output is correct
24 Correct 13 ms 18176 KB Output is correct
25 Correct 13 ms 18176 KB Output is correct
26 Correct 13 ms 18176 KB Output is correct
27 Correct 14 ms 18048 KB Output is correct
28 Correct 14 ms 18048 KB Output is correct
29 Correct 14 ms 18048 KB Output is correct
30 Correct 14 ms 18176 KB Output is correct
31 Correct 14 ms 18176 KB Output is correct
32 Correct 14 ms 18048 KB Output is correct
33 Correct 13 ms 17444 KB Output is correct
34 Correct 13 ms 17536 KB Output is correct
35 Correct 13 ms 16896 KB Output is correct
36 Correct 13 ms 17536 KB Output is correct
37 Correct 12 ms 16256 KB Output is correct
38 Correct 14 ms 18048 KB Output is correct
39 Correct 14 ms 18176 KB Output is correct
40 Correct 12 ms 17536 KB Output is correct
41 Correct 13 ms 18048 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Execution timed out 537 ms 776228 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 896 KB Output is correct
5 Correct 5 ms 1408 KB Output is correct
6 Correct 6 ms 1536 KB Output is correct
7 Correct 5 ms 1536 KB Output is correct
8 Correct 5 ms 1408 KB Output is correct
9 Correct 5 ms 1536 KB Output is correct
10 Correct 5 ms 1536 KB Output is correct
11 Correct 5 ms 1536 KB Output is correct
12 Correct 5 ms 1408 KB Output is correct
13 Correct 5 ms 1408 KB Output is correct
14 Correct 5 ms 1408 KB Output is correct
15 Correct 6 ms 1536 KB Output is correct
16 Correct 6 ms 1408 KB Output is correct
17 Correct 5 ms 1280 KB Output is correct
18 Correct 13 ms 18080 KB Output is correct
19 Correct 13 ms 18176 KB Output is correct
20 Correct 14 ms 18048 KB Output is correct
21 Correct 13 ms 18048 KB Output is correct
22 Correct 13 ms 18048 KB Output is correct
23 Correct 14 ms 18176 KB Output is correct
24 Correct 13 ms 18176 KB Output is correct
25 Correct 13 ms 18176 KB Output is correct
26 Correct 13 ms 18176 KB Output is correct
27 Correct 14 ms 18048 KB Output is correct
28 Correct 14 ms 18048 KB Output is correct
29 Correct 14 ms 18048 KB Output is correct
30 Correct 14 ms 18176 KB Output is correct
31 Correct 14 ms 18176 KB Output is correct
32 Correct 14 ms 18048 KB Output is correct
33 Correct 13 ms 17444 KB Output is correct
34 Correct 13 ms 17536 KB Output is correct
35 Correct 13 ms 16896 KB Output is correct
36 Correct 13 ms 17536 KB Output is correct
37 Correct 12 ms 16256 KB Output is correct
38 Correct 14 ms 18048 KB Output is correct
39 Correct 14 ms 18176 KB Output is correct
40 Correct 12 ms 17536 KB Output is correct
41 Correct 13 ms 18048 KB Output is correct
42 Correct 5 ms 384 KB Output is correct
43 Execution timed out 537 ms 776228 KB Time limit exceeded
44 Halted 0 ms 0 KB -