#include <bits/stdc++.h>
using namespace std;
const int maxn = 400;
const int INF = 1e9;
vector<int> pos[3];
vector<vector<vector<int>>> dp[3];
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
int n;
cin >> n;
string s;
cin >> s;
for(int j = 0;j < n;++j)
{
if(s[j] == 'R')
{
pos[0].push_back(j);
}
else if(s[j] == 'G')
{
pos[1].push_back(j);
}
else
pos[2].push_back(j);
}
for(int i = 0;i < 3;++i)
{
dp[i].resize(pos[0].size()+1);
for(int j= 0;j < dp[i].size();++j)
{
dp[i][j].resize(pos[1].size()+1);
for(int k = 0;k < dp[i][j].size();++k)
{
dp[i][j][k].resize(pos[2].size()+1);
}
}
}
int k[3] = {0};
for(k[0] = 0;k[0] <= pos[0].size();++k[0])
{
for(k[1] = 0;k[1] <= pos[1].size();++k[1])
{
for(k[2] = 0;k[2] <= pos[2].size();++k[2])
{
for(int last = 0;last < 3;++last)
{
auto &cdp = dp[last][k[0]][k[1]][k[2]];
if(k[0]+k[1]+k[2] == 0)
{
cdp = 0;
continue;
}
cdp = INF;
if(k[last] != 0)
{
int cpos = pos[last][k[last]-1];
int ind0 = upper_bound(pos[0].begin(),pos[0].end(),cpos)-pos[0].begin();
int ind1 = upper_bound(pos[1].begin(),pos[1].end(),cpos)-pos[1].begin();
int ind2 = upper_bound(pos[2].begin(),pos[2].end(),cpos)-pos[2].begin();
int c = max(0,k[0]-ind0) + max(0,k[1]-ind1) + max(0,k[2]-ind2);
k[last]--;
for(int nlast = 0;nlast < 3;++nlast)
{
if(nlast != last)
{
cdp = min(cdp,c + dp[nlast][k[0]][k[1]][k[2]]);
}
}
k[last]++;
}
}
}
}
}
int ans = INF;
for(int le = 0;le < 3;++le)
ans = min(ans,dp[le][pos[0].size()][pos[1].size()][pos[2].size()]);
cout << (ans == INF ? -1 : ans);
return 0;
}
Compilation message
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:37:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::vector<int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | for(int j= 0;j < dp[i].size();++j)
| ~~^~~~~~~~~~~~~~
joi2019_ho_t3.cpp:40:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
40 | for(int k = 0;k < dp[i][j].size();++k)
| ~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:47:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
47 | for(k[0] = 0;k[0] <= pos[0].size();++k[0])
| ~~~~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:49:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
49 | for(k[1] = 0;k[1] <= pos[1].size();++k[1])
| ~~~~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:51:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
51 | for(k[2] = 0;k[2] <= pos[2].size();++k[2])
| ~~~~~^~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
344 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
344 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
604 KB |
Output is correct |
19 |
Correct |
2 ms |
604 KB |
Output is correct |
20 |
Correct |
1 ms |
604 KB |
Output is correct |
21 |
Correct |
1 ms |
604 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
600 KB |
Output is correct |
25 |
Correct |
1 ms |
456 KB |
Output is correct |
26 |
Correct |
1 ms |
600 KB |
Output is correct |
27 |
Correct |
1 ms |
600 KB |
Output is correct |
28 |
Correct |
2 ms |
600 KB |
Output is correct |
29 |
Correct |
2 ms |
604 KB |
Output is correct |
30 |
Correct |
1 ms |
600 KB |
Output is correct |
31 |
Correct |
2 ms |
460 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
1 ms |
348 KB |
Output is correct |
34 |
Correct |
1 ms |
532 KB |
Output is correct |
35 |
Correct |
1 ms |
348 KB |
Output is correct |
36 |
Correct |
1 ms |
344 KB |
Output is correct |
37 |
Correct |
1 ms |
344 KB |
Output is correct |
38 |
Correct |
1 ms |
600 KB |
Output is correct |
39 |
Correct |
2 ms |
600 KB |
Output is correct |
40 |
Correct |
1 ms |
348 KB |
Output is correct |
41 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
10 ms |
6872 KB |
Output is correct |
3 |
Correct |
10 ms |
7004 KB |
Output is correct |
4 |
Correct |
10 ms |
7004 KB |
Output is correct |
5 |
Correct |
10 ms |
6960 KB |
Output is correct |
6 |
Correct |
10 ms |
7000 KB |
Output is correct |
7 |
Correct |
11 ms |
7004 KB |
Output is correct |
8 |
Correct |
13 ms |
7056 KB |
Output is correct |
9 |
Correct |
11 ms |
7004 KB |
Output is correct |
10 |
Correct |
11 ms |
7004 KB |
Output is correct |
11 |
Correct |
11 ms |
7004 KB |
Output is correct |
12 |
Correct |
3 ms |
2140 KB |
Output is correct |
13 |
Correct |
5 ms |
3420 KB |
Output is correct |
14 |
Correct |
7 ms |
4956 KB |
Output is correct |
15 |
Correct |
11 ms |
7124 KB |
Output is correct |
16 |
Correct |
10 ms |
7004 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
344 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
604 KB |
Output is correct |
19 |
Correct |
2 ms |
604 KB |
Output is correct |
20 |
Correct |
1 ms |
604 KB |
Output is correct |
21 |
Correct |
1 ms |
604 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
600 KB |
Output is correct |
25 |
Correct |
1 ms |
456 KB |
Output is correct |
26 |
Correct |
1 ms |
600 KB |
Output is correct |
27 |
Correct |
1 ms |
600 KB |
Output is correct |
28 |
Correct |
2 ms |
600 KB |
Output is correct |
29 |
Correct |
2 ms |
604 KB |
Output is correct |
30 |
Correct |
1 ms |
600 KB |
Output is correct |
31 |
Correct |
2 ms |
460 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
1 ms |
348 KB |
Output is correct |
34 |
Correct |
1 ms |
532 KB |
Output is correct |
35 |
Correct |
1 ms |
348 KB |
Output is correct |
36 |
Correct |
1 ms |
344 KB |
Output is correct |
37 |
Correct |
1 ms |
344 KB |
Output is correct |
38 |
Correct |
1 ms |
600 KB |
Output is correct |
39 |
Correct |
2 ms |
600 KB |
Output is correct |
40 |
Correct |
1 ms |
348 KB |
Output is correct |
41 |
Correct |
1 ms |
348 KB |
Output is correct |
42 |
Correct |
1 ms |
348 KB |
Output is correct |
43 |
Correct |
10 ms |
6872 KB |
Output is correct |
44 |
Correct |
10 ms |
7004 KB |
Output is correct |
45 |
Correct |
10 ms |
7004 KB |
Output is correct |
46 |
Correct |
10 ms |
6960 KB |
Output is correct |
47 |
Correct |
10 ms |
7000 KB |
Output is correct |
48 |
Correct |
11 ms |
7004 KB |
Output is correct |
49 |
Correct |
13 ms |
7056 KB |
Output is correct |
50 |
Correct |
11 ms |
7004 KB |
Output is correct |
51 |
Correct |
11 ms |
7004 KB |
Output is correct |
52 |
Correct |
11 ms |
7004 KB |
Output is correct |
53 |
Correct |
3 ms |
2140 KB |
Output is correct |
54 |
Correct |
5 ms |
3420 KB |
Output is correct |
55 |
Correct |
7 ms |
4956 KB |
Output is correct |
56 |
Correct |
11 ms |
7124 KB |
Output is correct |
57 |
Correct |
10 ms |
7004 KB |
Output is correct |
58 |
Correct |
311 ms |
30808 KB |
Output is correct |
59 |
Correct |
311 ms |
31068 KB |
Output is correct |
60 |
Correct |
310 ms |
30112 KB |
Output is correct |
61 |
Correct |
309 ms |
30776 KB |
Output is correct |
62 |
Correct |
27 ms |
6748 KB |
Output is correct |
63 |
Correct |
45 ms |
8540 KB |
Output is correct |
64 |
Correct |
152 ms |
18736 KB |
Output is correct |
65 |
Correct |
221 ms |
23064 KB |
Output is correct |
66 |
Correct |
249 ms |
30296 KB |
Output is correct |
67 |
Correct |
254 ms |
30292 KB |
Output is correct |
68 |
Correct |
267 ms |
30416 KB |
Output is correct |
69 |
Correct |
275 ms |
30984 KB |
Output is correct |
70 |
Correct |
275 ms |
30840 KB |
Output is correct |
71 |
Correct |
289 ms |
30420 KB |
Output is correct |
72 |
Correct |
86 ms |
8788 KB |
Output is correct |
73 |
Correct |
17 ms |
2392 KB |
Output is correct |