#include<bits/stdc++.h>
using namespace std;
const int N = 405;
int n, id[200], cnt[3][N], pos[3][N], iC[3], nmbr[3];
char c[N];
vector< vector< vector<int> > > f[3];
void update (int &_a, int _b) {
if (_a == -1 || _a > _b) _a = _b;
}
int main () {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
// freopen("test.INP", "r", stdin);
id['R'] = 0;
id['G'] = 1;
id['Y'] = 2;
cin >> n;
for (int i = 1; i <= n; ++i) {
cin >> c[i];
++nmbr[ id[ c[i] ] ];
}
for (int i = 1; i <= n; ++i) {
cnt[0][i] = cnt[0][i - 1];
cnt[1][i] = cnt[1][i - 1];
cnt[2][i] = cnt[2][i - 1];
++cnt[ id[ c[i] ] ][i];
}
for (int i = 1; i <= n; ++i) pos[ id[ c[i] ] ][ ++iC[ id[ c[i] ] ] ] = i;
for (int _ = 0; _ < 3; ++_) f[_].assign(nmbr[0] + 5, vector< vector<int> >(nmbr[1] + 5, vector<int>(nmbr[2] + 5, -1) ) );
f[0][0][0][0] = f[1][0][0][0] = f[2][0][0][0] = 0;
for (int ijk = 0; ijk <= n; ++ijk) {
for (int i = 0; i <= ijk && i <= nmbr[0]; ++i) {
for (int j = 0; i + j <= ijk && j <= nmbr[1]; ++j) {
int k = ijk - i - j;
if (k > nmbr[2]) continue;
if (f[0][i][j][k] != -1) {
if (j < nmbr[1]) update (f[1][i][j + 1][k], f[0][i][j][k] + max(0, cnt[0][ pos[1][j + 1] ] - cnt[0][ pos[0][i] ]) + max(0, cnt[2][ pos[1][j + 1] ] - cnt[2][ pos[2][k] ]) );
if (k < nmbr[2]) update (f[2][i][j][k + 1], f[0][i][j][k] + max(0, cnt[0][ pos[2][k + 1] ] - cnt[0][ pos[0][i] ]) + max(0, cnt[1][ pos[2][k + 1] ] - cnt[1][ pos[1][j] ]) );
}
if (f[1][i][j][k] != -1) {
if (i < nmbr[0]) update (f[0][i + 1][j][k], f[1][i][j][k] + max(0, cnt[1][ pos[0][i + 1] ] - cnt[1][ pos[1][j] ]) + max(0, cnt[2][ pos[0][i + 1] ] - cnt[2][ pos[2][k] ]) );
if (k < nmbr[2]) update (f[2][i][j][k + 1], f[1][i][j][k] + max(0, cnt[0][ pos[2][k + 1] ] - cnt[0][ pos[0][i] ]) + max(0, cnt[1][ pos[2][k + 1] ] - cnt[1][ pos[1][j] ]) );
}
if (f[2][i][j][k] != -1) {
if (i < nmbr[0]) update (f[0][i + 1][j][k], f[2][i][j][k] + max(0, cnt[1][ pos[0][i + 1] ] - cnt[1][ pos[1][j] ]) + max(0, cnt[2][ pos[0][i + 1] ] - cnt[2][ pos[2][k] ]) );
if (j < nmbr[1]) update (f[1][i][j + 1][k], f[2][i][j][k] + max(0, cnt[0][ pos[1][j + 1] ] - cnt[0][ pos[0][i] ]) + max(0, cnt[2][ pos[1][j + 1] ] - cnt[2][ pos[2][k] ]) );
}
}
}
}
int ans = -1;
if (f[0][ nmbr[0] ][ nmbr[1] ][ nmbr[2] ] != -1) update(ans, f[0][ nmbr[0] ][ nmbr[1] ][ nmbr[2] ]);
if (f[1][ nmbr[0] ][ nmbr[1] ][ nmbr[2] ] != -1) update(ans, f[1][ nmbr[0] ][ nmbr[1] ][ nmbr[2] ]);
if (f[2][ nmbr[0] ][ nmbr[1] ][ nmbr[2] ] != -1) update(ans, f[2][ nmbr[0] ][ nmbr[1] ][ nmbr[2] ]);
cout << ans;
return 0;
}
Compilation message
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:24:26: warning: array subscript has type 'char' [-Wchar-subscripts]
++nmbr[ id[ c[i] ] ];
^
joi2019_ho_t3.cpp:31:25: warning: array subscript has type 'char' [-Wchar-subscripts]
++cnt[ id[ c[i] ] ][i];
^
joi2019_ho_t3.cpp:34:48: warning: array subscript has type 'char' [-Wchar-subscripts]
for (int i = 1; i <= n; ++i) pos[ id[ c[i] ] ][ ++iC[ id[ c[i] ] ] ] = i;
^
joi2019_ho_t3.cpp:34:68: warning: array subscript has type 'char' [-Wchar-subscripts]
for (int i = 1; i <= n; ++i) pos[ id[ c[i] ] ][ ++iC[ id[ c[i] ] ] ] = i;
^
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
380 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
252 KB |
Output is correct |
17 |
Correct |
2 ms |
380 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
380 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
252 KB |
Output is correct |
17 |
Correct |
2 ms |
380 KB |
Output is correct |
18 |
Correct |
2 ms |
632 KB |
Output is correct |
19 |
Correct |
2 ms |
632 KB |
Output is correct |
20 |
Correct |
2 ms |
632 KB |
Output is correct |
21 |
Correct |
3 ms |
632 KB |
Output is correct |
22 |
Correct |
2 ms |
504 KB |
Output is correct |
23 |
Correct |
2 ms |
632 KB |
Output is correct |
24 |
Correct |
2 ms |
504 KB |
Output is correct |
25 |
Correct |
2 ms |
504 KB |
Output is correct |
26 |
Correct |
2 ms |
504 KB |
Output is correct |
27 |
Correct |
3 ms |
632 KB |
Output is correct |
28 |
Correct |
3 ms |
632 KB |
Output is correct |
29 |
Correct |
3 ms |
632 KB |
Output is correct |
30 |
Correct |
3 ms |
692 KB |
Output is correct |
31 |
Correct |
2 ms |
632 KB |
Output is correct |
32 |
Correct |
3 ms |
632 KB |
Output is correct |
33 |
Correct |
2 ms |
632 KB |
Output is correct |
34 |
Correct |
3 ms |
632 KB |
Output is correct |
35 |
Correct |
3 ms |
632 KB |
Output is correct |
36 |
Correct |
2 ms |
632 KB |
Output is correct |
37 |
Correct |
2 ms |
632 KB |
Output is correct |
38 |
Correct |
3 ms |
632 KB |
Output is correct |
39 |
Correct |
3 ms |
632 KB |
Output is correct |
40 |
Correct |
2 ms |
504 KB |
Output is correct |
41 |
Correct |
2 ms |
508 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
33 ms |
7288 KB |
Output is correct |
3 |
Correct |
33 ms |
7288 KB |
Output is correct |
4 |
Correct |
33 ms |
7288 KB |
Output is correct |
5 |
Correct |
33 ms |
7288 KB |
Output is correct |
6 |
Correct |
33 ms |
7288 KB |
Output is correct |
7 |
Correct |
32 ms |
7288 KB |
Output is correct |
8 |
Correct |
32 ms |
7288 KB |
Output is correct |
9 |
Correct |
32 ms |
7160 KB |
Output is correct |
10 |
Correct |
33 ms |
7288 KB |
Output is correct |
11 |
Correct |
32 ms |
7416 KB |
Output is correct |
12 |
Correct |
7 ms |
2296 KB |
Output is correct |
13 |
Correct |
13 ms |
3708 KB |
Output is correct |
14 |
Correct |
19 ms |
5172 KB |
Output is correct |
15 |
Correct |
31 ms |
7288 KB |
Output is correct |
16 |
Correct |
32 ms |
7288 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
380 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
252 KB |
Output is correct |
17 |
Correct |
2 ms |
380 KB |
Output is correct |
18 |
Correct |
2 ms |
632 KB |
Output is correct |
19 |
Correct |
2 ms |
632 KB |
Output is correct |
20 |
Correct |
2 ms |
632 KB |
Output is correct |
21 |
Correct |
3 ms |
632 KB |
Output is correct |
22 |
Correct |
2 ms |
504 KB |
Output is correct |
23 |
Correct |
2 ms |
632 KB |
Output is correct |
24 |
Correct |
2 ms |
504 KB |
Output is correct |
25 |
Correct |
2 ms |
504 KB |
Output is correct |
26 |
Correct |
2 ms |
504 KB |
Output is correct |
27 |
Correct |
3 ms |
632 KB |
Output is correct |
28 |
Correct |
3 ms |
632 KB |
Output is correct |
29 |
Correct |
3 ms |
632 KB |
Output is correct |
30 |
Correct |
3 ms |
692 KB |
Output is correct |
31 |
Correct |
2 ms |
632 KB |
Output is correct |
32 |
Correct |
3 ms |
632 KB |
Output is correct |
33 |
Correct |
2 ms |
632 KB |
Output is correct |
34 |
Correct |
3 ms |
632 KB |
Output is correct |
35 |
Correct |
3 ms |
632 KB |
Output is correct |
36 |
Correct |
2 ms |
632 KB |
Output is correct |
37 |
Correct |
2 ms |
632 KB |
Output is correct |
38 |
Correct |
3 ms |
632 KB |
Output is correct |
39 |
Correct |
3 ms |
632 KB |
Output is correct |
40 |
Correct |
2 ms |
504 KB |
Output is correct |
41 |
Correct |
2 ms |
508 KB |
Output is correct |
42 |
Correct |
2 ms |
376 KB |
Output is correct |
43 |
Correct |
33 ms |
7288 KB |
Output is correct |
44 |
Correct |
33 ms |
7288 KB |
Output is correct |
45 |
Correct |
33 ms |
7288 KB |
Output is correct |
46 |
Correct |
33 ms |
7288 KB |
Output is correct |
47 |
Correct |
33 ms |
7288 KB |
Output is correct |
48 |
Correct |
32 ms |
7288 KB |
Output is correct |
49 |
Correct |
32 ms |
7288 KB |
Output is correct |
50 |
Correct |
32 ms |
7160 KB |
Output is correct |
51 |
Correct |
33 ms |
7288 KB |
Output is correct |
52 |
Correct |
32 ms |
7416 KB |
Output is correct |
53 |
Correct |
7 ms |
2296 KB |
Output is correct |
54 |
Correct |
13 ms |
3708 KB |
Output is correct |
55 |
Correct |
19 ms |
5172 KB |
Output is correct |
56 |
Correct |
31 ms |
7288 KB |
Output is correct |
57 |
Correct |
32 ms |
7288 KB |
Output is correct |
58 |
Correct |
132 ms |
33400 KB |
Output is correct |
59 |
Correct |
137 ms |
33912 KB |
Output is correct |
60 |
Correct |
131 ms |
32888 KB |
Output is correct |
61 |
Correct |
138 ms |
33528 KB |
Output is correct |
62 |
Correct |
34 ms |
9116 KB |
Output is correct |
63 |
Correct |
38 ms |
10872 KB |
Output is correct |
64 |
Correct |
65 ms |
21112 KB |
Output is correct |
65 |
Correct |
85 ms |
25720 KB |
Output is correct |
66 |
Correct |
135 ms |
33144 KB |
Output is correct |
67 |
Correct |
123 ms |
32760 KB |
Output is correct |
68 |
Correct |
135 ms |
33144 KB |
Output is correct |
69 |
Correct |
136 ms |
33784 KB |
Output is correct |
70 |
Correct |
134 ms |
33656 KB |
Output is correct |
71 |
Correct |
131 ms |
33144 KB |
Output is correct |
72 |
Correct |
26 ms |
10232 KB |
Output is correct |
73 |
Correct |
7 ms |
4092 KB |
Output is correct |