/*input
20
YYGYYYGGGGRGYYGRGRYG
*/
#pragma GCC optimize ("O3")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
int code(char c)
{
if (c == 'R')
return 0;
if (c == 'G')
return 1;
return 2;
}
int main()
{
ios_base::sync_with_stdio(false);
int n;
string s;
cin >> n >> s;
vector<int>p[3];
for (int i = 0; i < n; i++)
p[code(s[i])].push_back(i);
int dp[p[0].size() + 2][p[1].size() + 2][p[2].size() + 2][3];
for (int k0 = 0; k0 <= (int)p[0].size(); k0++)
{
for (int k1 = 0; k1 <= (int)p[1].size(); k1++)
{
for (int k2 = 0; k2 <= (int)p[2].size(); k2++)
{
for (int a = 0; a < 3; a++)
dp[k0][k1][k2][a] = 2e8;
}
}
}
dp[0][0][0][0] = 0;
dp[0][0][0][1] = 0;
dp[0][0][0][2] = 0;
int d[3][n][n];
for (int a = 0; a < 3; a++)
{
for (int i = 0; i < n; i++)
{
for (int k = 0; k <= (int)p[a].size(); k++)
{
d[a][i][k] = lower_bound(p[a].begin() + k, p[a].end(), i) - (p[a].begin() + k);
}
}
}
int k[3];
for (k[0] = 0; k[0] <= (int)p[0].size(); k[0]++)
{
for (k[1] = 0; k[1] <= (int)p[1].size(); k[1]++)
{
for (k[2] = 0; k[2] <= (int)p[2].size(); k[2]++)
{
for (int a = 0; a < 3; a++)
{
if (k[a] == (int)p[a].size())
continue;
int cost = d[0][p[a][k[a]]][k[0]] + d[1][p[a][k[a]]][k[1]] + d[2][p[a][k[a]]][k[2]];
for (int b = 0; b < 3; b++)
{
if (a == b)
continue;
dp[k[0] + (a == 0)][k[1] + (a == 1)][k[2] + (a == 2)][b] =
min(dp[k[0] + (a == 0)][k[1] + (a == 1)][k[2] + (a == 2)][b],
cost + dp[k[0]][k[1]][k[2]][a]);
}
}
}
}
}
int ans = min({dp[p[0].size()][p[1].size()][p[2].size()][0],
dp[p[0].size()][p[1].size()][p[2].size()][1],
dp[p[0].size()][p[1].size()][p[2].size()][2]
});
if (ans > 1e8)
ans = -1;
cout << ans << "\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
384 KB |
Output is correct |
12 |
Correct |
2 ms |
384 KB |
Output is correct |
13 |
Correct |
2 ms |
384 KB |
Output is correct |
14 |
Correct |
2 ms |
384 KB |
Output is correct |
15 |
Correct |
2 ms |
384 KB |
Output is correct |
16 |
Correct |
2 ms |
384 KB |
Output is correct |
17 |
Correct |
3 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
384 KB |
Output is correct |
12 |
Correct |
2 ms |
384 KB |
Output is correct |
13 |
Correct |
2 ms |
384 KB |
Output is correct |
14 |
Correct |
2 ms |
384 KB |
Output is correct |
15 |
Correct |
2 ms |
384 KB |
Output is correct |
16 |
Correct |
2 ms |
384 KB |
Output is correct |
17 |
Correct |
3 ms |
384 KB |
Output is correct |
18 |
Correct |
2 ms |
512 KB |
Output is correct |
19 |
Correct |
3 ms |
512 KB |
Output is correct |
20 |
Correct |
2 ms |
512 KB |
Output is correct |
21 |
Correct |
2 ms |
512 KB |
Output is correct |
22 |
Correct |
2 ms |
512 KB |
Output is correct |
23 |
Correct |
2 ms |
512 KB |
Output is correct |
24 |
Correct |
2 ms |
512 KB |
Output is correct |
25 |
Correct |
2 ms |
384 KB |
Output is correct |
26 |
Correct |
2 ms |
384 KB |
Output is correct |
27 |
Correct |
2 ms |
512 KB |
Output is correct |
28 |
Correct |
2 ms |
512 KB |
Output is correct |
29 |
Correct |
2 ms |
512 KB |
Output is correct |
30 |
Correct |
2 ms |
512 KB |
Output is correct |
31 |
Correct |
2 ms |
512 KB |
Output is correct |
32 |
Correct |
2 ms |
512 KB |
Output is correct |
33 |
Correct |
2 ms |
384 KB |
Output is correct |
34 |
Correct |
2 ms |
384 KB |
Output is correct |
35 |
Correct |
2 ms |
512 KB |
Output is correct |
36 |
Correct |
2 ms |
512 KB |
Output is correct |
37 |
Correct |
2 ms |
512 KB |
Output is correct |
38 |
Correct |
2 ms |
512 KB |
Output is correct |
39 |
Correct |
3 ms |
512 KB |
Output is correct |
40 |
Correct |
2 ms |
384 KB |
Output is correct |
41 |
Correct |
2 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
6 ms |
3200 KB |
Output is correct |
3 |
Correct |
6 ms |
3200 KB |
Output is correct |
4 |
Correct |
7 ms |
3200 KB |
Output is correct |
5 |
Correct |
6 ms |
3200 KB |
Output is correct |
6 |
Correct |
6 ms |
3200 KB |
Output is correct |
7 |
Correct |
7 ms |
3200 KB |
Output is correct |
8 |
Correct |
6 ms |
3200 KB |
Output is correct |
9 |
Correct |
6 ms |
3072 KB |
Output is correct |
10 |
Correct |
7 ms |
3200 KB |
Output is correct |
11 |
Correct |
7 ms |
3200 KB |
Output is correct |
12 |
Correct |
3 ms |
1152 KB |
Output is correct |
13 |
Correct |
4 ms |
1664 KB |
Output is correct |
14 |
Correct |
5 ms |
2332 KB |
Output is correct |
15 |
Correct |
6 ms |
3200 KB |
Output is correct |
16 |
Correct |
6 ms |
3200 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
384 KB |
Output is correct |
12 |
Correct |
2 ms |
384 KB |
Output is correct |
13 |
Correct |
2 ms |
384 KB |
Output is correct |
14 |
Correct |
2 ms |
384 KB |
Output is correct |
15 |
Correct |
2 ms |
384 KB |
Output is correct |
16 |
Correct |
2 ms |
384 KB |
Output is correct |
17 |
Correct |
3 ms |
384 KB |
Output is correct |
18 |
Correct |
2 ms |
512 KB |
Output is correct |
19 |
Correct |
3 ms |
512 KB |
Output is correct |
20 |
Correct |
2 ms |
512 KB |
Output is correct |
21 |
Correct |
2 ms |
512 KB |
Output is correct |
22 |
Correct |
2 ms |
512 KB |
Output is correct |
23 |
Correct |
2 ms |
512 KB |
Output is correct |
24 |
Correct |
2 ms |
512 KB |
Output is correct |
25 |
Correct |
2 ms |
384 KB |
Output is correct |
26 |
Correct |
2 ms |
384 KB |
Output is correct |
27 |
Correct |
2 ms |
512 KB |
Output is correct |
28 |
Correct |
2 ms |
512 KB |
Output is correct |
29 |
Correct |
2 ms |
512 KB |
Output is correct |
30 |
Correct |
2 ms |
512 KB |
Output is correct |
31 |
Correct |
2 ms |
512 KB |
Output is correct |
32 |
Correct |
2 ms |
512 KB |
Output is correct |
33 |
Correct |
2 ms |
384 KB |
Output is correct |
34 |
Correct |
2 ms |
384 KB |
Output is correct |
35 |
Correct |
2 ms |
512 KB |
Output is correct |
36 |
Correct |
2 ms |
512 KB |
Output is correct |
37 |
Correct |
2 ms |
512 KB |
Output is correct |
38 |
Correct |
2 ms |
512 KB |
Output is correct |
39 |
Correct |
3 ms |
512 KB |
Output is correct |
40 |
Correct |
2 ms |
384 KB |
Output is correct |
41 |
Correct |
2 ms |
384 KB |
Output is correct |
42 |
Correct |
2 ms |
384 KB |
Output is correct |
43 |
Correct |
6 ms |
3200 KB |
Output is correct |
44 |
Correct |
6 ms |
3200 KB |
Output is correct |
45 |
Correct |
7 ms |
3200 KB |
Output is correct |
46 |
Correct |
6 ms |
3200 KB |
Output is correct |
47 |
Correct |
6 ms |
3200 KB |
Output is correct |
48 |
Correct |
7 ms |
3200 KB |
Output is correct |
49 |
Correct |
6 ms |
3200 KB |
Output is correct |
50 |
Correct |
6 ms |
3072 KB |
Output is correct |
51 |
Correct |
7 ms |
3200 KB |
Output is correct |
52 |
Correct |
7 ms |
3200 KB |
Output is correct |
53 |
Correct |
3 ms |
1152 KB |
Output is correct |
54 |
Correct |
4 ms |
1664 KB |
Output is correct |
55 |
Correct |
5 ms |
2332 KB |
Output is correct |
56 |
Correct |
6 ms |
3200 KB |
Output is correct |
57 |
Correct |
6 ms |
3200 KB |
Output is correct |
58 |
Correct |
62 ms |
30816 KB |
Output is correct |
59 |
Correct |
64 ms |
30868 KB |
Output is correct |
60 |
Correct |
61 ms |
30592 KB |
Output is correct |
61 |
Correct |
65 ms |
30848 KB |
Output is correct |
62 |
Correct |
9 ms |
4992 KB |
Output is correct |
63 |
Correct |
13 ms |
6784 KB |
Output is correct |
64 |
Correct |
28 ms |
16640 KB |
Output is correct |
65 |
Correct |
43 ms |
22756 KB |
Output is correct |
66 |
Correct |
51 ms |
30464 KB |
Output is correct |
67 |
Correct |
62 ms |
30456 KB |
Output is correct |
68 |
Correct |
55 ms |
30848 KB |
Output is correct |
69 |
Correct |
59 ms |
31132 KB |
Output is correct |
70 |
Correct |
57 ms |
30976 KB |
Output is correct |
71 |
Correct |
60 ms |
30332 KB |
Output is correct |
72 |
Correct |
17 ms |
9728 KB |
Output is correct |
73 |
Correct |
9 ms |
4096 KB |
Output is correct |