#include<bits/stdc++.h>
using namespace std;
const int N = 401;
const int INF = 1e9 + 7;
vector <char> al = {'R', 'G', 'Y'};
int dp1[N][N][3], dp2[N][N][3];
int cnt[3];
vector <int> pos[3];
int ar[3][N][N];
char s[N];
void mm(int &a, int b) {
a = min(a, b);
}
int get(char c) {
for (int i = 0; i < 3; ++i) {
if (al[i] == c) {
return i;
}
}
}
signed main() {
#ifdef HOME
freopen("input.txt", "r", stdin);
#else
ios_base::sync_with_stdio(0); cin.tie(0);
#endif
int n;
cin >> n;
for (int i = 1; i <= n; ++i) {
cin >> s[i];
++cnt[get(s[i])];
pos[get(s[i])].push_back(i);
}
for (int t = 0; t < 3; ++t) {
for (int i = 0; i < pos[t].size(); ++i) {
for (int j = 0; j < N; ++j) {
ar[t][i + 1][j] = ar[t][i][j] + (pos[t][i] > j);
}
}
}
for (int i = 0; i < N; ++i) {
for (int j = 0; j < N; ++j) {
for (int t = 0; t < 3; ++t) {
dp1[i][j][t] = INF;
}
}
}
for (int i = 0; i < 3; ++i) {
dp1[0][0][i] = 0;
}
for (int i = 0; i <= cnt[0]; ++i) {
for (int j = 0; j <= cnt[1]; ++j) {
for (int k = 0; k <= cnt[2]; ++k) {
for (int pr = 0; pr < 3; ++pr) {
dp2[j][k][pr] = INF;
}
}
}
for (int j = 0; j <= cnt[1]; ++j) {
for (int k = 0; k <= cnt[2]; ++k) {
for (int pr = 0; pr < 3; ++pr) {
//cout << i << ' ' << j << ' ' << k << ' ' << pr << ' ' << dp1[j][k][pr] << '\n';
int p = i + j + k + 1;
if (i < cnt[0] && pr != 0) {
mm(dp2[j][k][0], dp1[j][k][pr] + ar[1][j][pos[0][i]] + ar[2][k][pos[0][i]]);
}
if (j < cnt[1] && pr != 1) {
mm(dp1[j + 1][k][1], dp1[j][k][pr] + ar[0][i][pos[1][j]] + ar[2][k][pos[1][j]]);
}
if (k < cnt[2] && pr != 2) {
mm(dp1[j][k + 1][2], dp1[j][k][pr] + ar[0][i][pos[2][k]] + ar[1][j][pos[2][k]]);
}
}
}
}
if (i == cnt[0]) break;
for (int j = 0; j <= cnt[1]; ++j) {
for (int k = 0; k <= cnt[2]; ++k) {
for (int pr = 0; pr < 3; ++pr) {
dp1[j][k][pr] = dp2[j][k][pr];
}
}
}
}
int ans = INF;
for (int i = 0; i < 3; ++i) {
ans = min(ans, dp1[cnt[1]][cnt[2]][i]);
}
if (ans == INF) {
cout << "-1\n";
}
else {
cout << ans << '\n';
}
}
Compilation message
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:36:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < pos[t].size(); ++i) {
~~^~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:65:25: warning: unused variable 'p' [-Wunused-variable]
int p = i + j + k + 1;
^
joi2019_ho_t3.cpp: In function 'int get(char)':
joi2019_ho_t3.cpp:20:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2168 KB |
Output is correct |
2 |
Correct |
4 ms |
2168 KB |
Output is correct |
3 |
Correct |
3 ms |
2168 KB |
Output is correct |
4 |
Correct |
4 ms |
2300 KB |
Output is correct |
5 |
Correct |
4 ms |
2296 KB |
Output is correct |
6 |
Correct |
4 ms |
2296 KB |
Output is correct |
7 |
Correct |
4 ms |
2296 KB |
Output is correct |
8 |
Correct |
3 ms |
2296 KB |
Output is correct |
9 |
Correct |
3 ms |
2296 KB |
Output is correct |
10 |
Correct |
4 ms |
2296 KB |
Output is correct |
11 |
Correct |
4 ms |
2296 KB |
Output is correct |
12 |
Correct |
4 ms |
2424 KB |
Output is correct |
13 |
Correct |
4 ms |
2296 KB |
Output is correct |
14 |
Correct |
4 ms |
2296 KB |
Output is correct |
15 |
Correct |
4 ms |
2296 KB |
Output is correct |
16 |
Correct |
4 ms |
2296 KB |
Output is correct |
17 |
Correct |
4 ms |
2296 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2168 KB |
Output is correct |
2 |
Correct |
4 ms |
2168 KB |
Output is correct |
3 |
Correct |
3 ms |
2168 KB |
Output is correct |
4 |
Correct |
4 ms |
2300 KB |
Output is correct |
5 |
Correct |
4 ms |
2296 KB |
Output is correct |
6 |
Correct |
4 ms |
2296 KB |
Output is correct |
7 |
Correct |
4 ms |
2296 KB |
Output is correct |
8 |
Correct |
3 ms |
2296 KB |
Output is correct |
9 |
Correct |
3 ms |
2296 KB |
Output is correct |
10 |
Correct |
4 ms |
2296 KB |
Output is correct |
11 |
Correct |
4 ms |
2296 KB |
Output is correct |
12 |
Correct |
4 ms |
2424 KB |
Output is correct |
13 |
Correct |
4 ms |
2296 KB |
Output is correct |
14 |
Correct |
4 ms |
2296 KB |
Output is correct |
15 |
Correct |
4 ms |
2296 KB |
Output is correct |
16 |
Correct |
4 ms |
2296 KB |
Output is correct |
17 |
Correct |
4 ms |
2296 KB |
Output is correct |
18 |
Correct |
4 ms |
2472 KB |
Output is correct |
19 |
Correct |
4 ms |
2428 KB |
Output is correct |
20 |
Correct |
4 ms |
2424 KB |
Output is correct |
21 |
Correct |
4 ms |
2424 KB |
Output is correct |
22 |
Correct |
4 ms |
2424 KB |
Output is correct |
23 |
Correct |
4 ms |
2424 KB |
Output is correct |
24 |
Correct |
4 ms |
2396 KB |
Output is correct |
25 |
Correct |
4 ms |
2424 KB |
Output is correct |
26 |
Correct |
4 ms |
2424 KB |
Output is correct |
27 |
Correct |
4 ms |
2424 KB |
Output is correct |
28 |
Correct |
4 ms |
2424 KB |
Output is correct |
29 |
Correct |
4 ms |
2424 KB |
Output is correct |
30 |
Correct |
5 ms |
2424 KB |
Output is correct |
31 |
Correct |
4 ms |
2424 KB |
Output is correct |
32 |
Correct |
4 ms |
2424 KB |
Output is correct |
33 |
Correct |
4 ms |
2424 KB |
Output is correct |
34 |
Correct |
4 ms |
2424 KB |
Output is correct |
35 |
Correct |
4 ms |
2424 KB |
Output is correct |
36 |
Correct |
4 ms |
2452 KB |
Output is correct |
37 |
Correct |
4 ms |
2424 KB |
Output is correct |
38 |
Correct |
4 ms |
2424 KB |
Output is correct |
39 |
Correct |
4 ms |
2424 KB |
Output is correct |
40 |
Correct |
4 ms |
2424 KB |
Output is correct |
41 |
Correct |
4 ms |
2556 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2296 KB |
Output is correct |
2 |
Correct |
6 ms |
3704 KB |
Output is correct |
3 |
Correct |
6 ms |
3732 KB |
Output is correct |
4 |
Correct |
6 ms |
3704 KB |
Output is correct |
5 |
Correct |
6 ms |
3704 KB |
Output is correct |
6 |
Correct |
6 ms |
3704 KB |
Output is correct |
7 |
Correct |
6 ms |
3704 KB |
Output is correct |
8 |
Correct |
6 ms |
3704 KB |
Output is correct |
9 |
Correct |
7 ms |
3704 KB |
Output is correct |
10 |
Correct |
7 ms |
3704 KB |
Output is correct |
11 |
Correct |
6 ms |
3720 KB |
Output is correct |
12 |
Correct |
4 ms |
3000 KB |
Output is correct |
13 |
Correct |
5 ms |
3196 KB |
Output is correct |
14 |
Correct |
5 ms |
3448 KB |
Output is correct |
15 |
Correct |
6 ms |
3704 KB |
Output is correct |
16 |
Correct |
6 ms |
3704 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2168 KB |
Output is correct |
2 |
Correct |
4 ms |
2168 KB |
Output is correct |
3 |
Correct |
3 ms |
2168 KB |
Output is correct |
4 |
Correct |
4 ms |
2300 KB |
Output is correct |
5 |
Correct |
4 ms |
2296 KB |
Output is correct |
6 |
Correct |
4 ms |
2296 KB |
Output is correct |
7 |
Correct |
4 ms |
2296 KB |
Output is correct |
8 |
Correct |
3 ms |
2296 KB |
Output is correct |
9 |
Correct |
3 ms |
2296 KB |
Output is correct |
10 |
Correct |
4 ms |
2296 KB |
Output is correct |
11 |
Correct |
4 ms |
2296 KB |
Output is correct |
12 |
Correct |
4 ms |
2424 KB |
Output is correct |
13 |
Correct |
4 ms |
2296 KB |
Output is correct |
14 |
Correct |
4 ms |
2296 KB |
Output is correct |
15 |
Correct |
4 ms |
2296 KB |
Output is correct |
16 |
Correct |
4 ms |
2296 KB |
Output is correct |
17 |
Correct |
4 ms |
2296 KB |
Output is correct |
18 |
Correct |
4 ms |
2472 KB |
Output is correct |
19 |
Correct |
4 ms |
2428 KB |
Output is correct |
20 |
Correct |
4 ms |
2424 KB |
Output is correct |
21 |
Correct |
4 ms |
2424 KB |
Output is correct |
22 |
Correct |
4 ms |
2424 KB |
Output is correct |
23 |
Correct |
4 ms |
2424 KB |
Output is correct |
24 |
Correct |
4 ms |
2396 KB |
Output is correct |
25 |
Correct |
4 ms |
2424 KB |
Output is correct |
26 |
Correct |
4 ms |
2424 KB |
Output is correct |
27 |
Correct |
4 ms |
2424 KB |
Output is correct |
28 |
Correct |
4 ms |
2424 KB |
Output is correct |
29 |
Correct |
4 ms |
2424 KB |
Output is correct |
30 |
Correct |
5 ms |
2424 KB |
Output is correct |
31 |
Correct |
4 ms |
2424 KB |
Output is correct |
32 |
Correct |
4 ms |
2424 KB |
Output is correct |
33 |
Correct |
4 ms |
2424 KB |
Output is correct |
34 |
Correct |
4 ms |
2424 KB |
Output is correct |
35 |
Correct |
4 ms |
2424 KB |
Output is correct |
36 |
Correct |
4 ms |
2452 KB |
Output is correct |
37 |
Correct |
4 ms |
2424 KB |
Output is correct |
38 |
Correct |
4 ms |
2424 KB |
Output is correct |
39 |
Correct |
4 ms |
2424 KB |
Output is correct |
40 |
Correct |
4 ms |
2424 KB |
Output is correct |
41 |
Correct |
4 ms |
2556 KB |
Output is correct |
42 |
Correct |
4 ms |
2296 KB |
Output is correct |
43 |
Correct |
6 ms |
3704 KB |
Output is correct |
44 |
Correct |
6 ms |
3732 KB |
Output is correct |
45 |
Correct |
6 ms |
3704 KB |
Output is correct |
46 |
Correct |
6 ms |
3704 KB |
Output is correct |
47 |
Correct |
6 ms |
3704 KB |
Output is correct |
48 |
Correct |
6 ms |
3704 KB |
Output is correct |
49 |
Correct |
6 ms |
3704 KB |
Output is correct |
50 |
Correct |
7 ms |
3704 KB |
Output is correct |
51 |
Correct |
7 ms |
3704 KB |
Output is correct |
52 |
Correct |
6 ms |
3720 KB |
Output is correct |
53 |
Correct |
4 ms |
3000 KB |
Output is correct |
54 |
Correct |
5 ms |
3196 KB |
Output is correct |
55 |
Correct |
5 ms |
3448 KB |
Output is correct |
56 |
Correct |
6 ms |
3704 KB |
Output is correct |
57 |
Correct |
6 ms |
3704 KB |
Output is correct |
58 |
Correct |
48 ms |
3448 KB |
Output is correct |
59 |
Correct |
48 ms |
3580 KB |
Output is correct |
60 |
Correct |
48 ms |
3576 KB |
Output is correct |
61 |
Correct |
48 ms |
3448 KB |
Output is correct |
62 |
Correct |
9 ms |
3576 KB |
Output is correct |
63 |
Correct |
12 ms |
3704 KB |
Output is correct |
64 |
Correct |
29 ms |
3704 KB |
Output is correct |
65 |
Correct |
37 ms |
3704 KB |
Output is correct |
66 |
Correct |
45 ms |
3576 KB |
Output is correct |
67 |
Correct |
47 ms |
3576 KB |
Output is correct |
68 |
Correct |
46 ms |
3448 KB |
Output is correct |
69 |
Correct |
47 ms |
3448 KB |
Output is correct |
70 |
Correct |
47 ms |
3576 KB |
Output is correct |
71 |
Correct |
47 ms |
3448 KB |
Output is correct |
72 |
Correct |
15 ms |
3064 KB |
Output is correct |
73 |
Correct |
8 ms |
3448 KB |
Output is correct |