#include <bits/stdc++.h>
using namespace std;
#define int long long
int a[405][3][405][405];
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
int n; cin >> n;
vector<int> b[3];
string s; cin>>s;
for(int l=0; l<3; l++) b[l].push_back(0);
for(int i = 1; i <=n; i++){
if(s[i-1]=='R') b[0].push_back(i);
if(s[i-1]=='Y') b[1].push_back(i);
if(s[i-1]=='G') b[2].push_back(i);
}
for(int i=1; i<=n; i++){
for(int l=0; l<3; l++){
for(int j=0; j<=n; j++)
{
for(int f=0; f<=n; f++)
{
a[i][l][j][f]=1e18;
}
}
}
}
for(int l=0; l<3; l++) b[l].push_back(n+1);
int ans=1e18;
for(int i=1; i<=n; i++){
for(int l=0; l<=i&&l<b[0].size()-1; l++){
for(int j=0; j+l<=i&&j<b[1].size()-1; j++){
int k=i-(j+l);
if(k<b[2].size()-1)
for(int t=0; t<3; t++){
int dist=0;
int f=0;
if(t==0) f=l;
else if(t==1) f=j;
else f=k;
dist+=max(0LL, lower_bound(b[0].begin(), b[0].end(), b[t][f])-b[0].begin()-l-1);
dist+=max(0LL, lower_bound(b[1].begin(), b[1].end(), b[t][f])-b[1].begin()-j-1);
dist+=max(0LL, lower_bound(b[2].begin(), b[2].end(), b[t][f])-b[2].begin()-k-1);
for(int g=0; g<3&&f; g++){
if(t==0&&g!=t&&(l>0||i==1))
a[i][t][l][j]=min(a[i-1][g][max(0LL, l-1)][j]+dist, a[i][t][l][j]);
if(t==1&&g!=t&&(j>0||i==1))
a[i][t][l][j]=min(a[i-1][g][l][max(0LL, j-1)]+dist, a[i][t][l][j]);
if(t==2&&g!=t&&(k>0||i==1))
a[i][t][l][j]=min(a[i-1][g][l][j]+dist, a[i][t][l][j]);
}
if(i==n) ans=min(ans, a[i][t][l][j]);
}
}
}
}
if(ans>=1e18) cout<<-1;
else cout<<ans;
}
Compilation message
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:42:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
42 | for(int l=0; l<=i&&l<b[0].size()-1; l++){
| ~^~~~~~~~~~~~~~
joi2019_ho_t3.cpp:43:35: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
43 | for(int j=0; j+l<=i&&j<b[1].size()-1; j++){
| ~^~~~~~~~~~~~~~
joi2019_ho_t3.cpp:45:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
45 | if(k<b[2].size()-1)
| ~^~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
1488 KB |
Output is correct |
5 |
Correct |
2 ms |
2772 KB |
Output is correct |
6 |
Correct |
2 ms |
2764 KB |
Output is correct |
7 |
Correct |
1 ms |
2772 KB |
Output is correct |
8 |
Correct |
2 ms |
2772 KB |
Output is correct |
9 |
Correct |
1 ms |
2772 KB |
Output is correct |
10 |
Correct |
1 ms |
2772 KB |
Output is correct |
11 |
Correct |
1 ms |
2772 KB |
Output is correct |
12 |
Correct |
1 ms |
2772 KB |
Output is correct |
13 |
Correct |
1 ms |
2760 KB |
Output is correct |
14 |
Correct |
1 ms |
2376 KB |
Output is correct |
15 |
Correct |
1 ms |
2772 KB |
Output is correct |
16 |
Correct |
1 ms |
2772 KB |
Output is correct |
17 |
Correct |
1 ms |
2388 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
1488 KB |
Output is correct |
5 |
Correct |
2 ms |
2772 KB |
Output is correct |
6 |
Correct |
2 ms |
2764 KB |
Output is correct |
7 |
Correct |
1 ms |
2772 KB |
Output is correct |
8 |
Correct |
2 ms |
2772 KB |
Output is correct |
9 |
Correct |
1 ms |
2772 KB |
Output is correct |
10 |
Correct |
1 ms |
2772 KB |
Output is correct |
11 |
Correct |
1 ms |
2772 KB |
Output is correct |
12 |
Correct |
1 ms |
2772 KB |
Output is correct |
13 |
Correct |
1 ms |
2760 KB |
Output is correct |
14 |
Correct |
1 ms |
2376 KB |
Output is correct |
15 |
Correct |
1 ms |
2772 KB |
Output is correct |
16 |
Correct |
1 ms |
2772 KB |
Output is correct |
17 |
Correct |
1 ms |
2388 KB |
Output is correct |
18 |
Correct |
15 ms |
35744 KB |
Output is correct |
19 |
Correct |
15 ms |
35660 KB |
Output is correct |
20 |
Correct |
16 ms |
35668 KB |
Output is correct |
21 |
Correct |
16 ms |
35668 KB |
Output is correct |
22 |
Correct |
15 ms |
35668 KB |
Output is correct |
23 |
Correct |
15 ms |
35668 KB |
Output is correct |
24 |
Correct |
15 ms |
35696 KB |
Output is correct |
25 |
Correct |
18 ms |
35672 KB |
Output is correct |
26 |
Correct |
14 ms |
35660 KB |
Output is correct |
27 |
Correct |
18 ms |
35668 KB |
Output is correct |
28 |
Correct |
17 ms |
35644 KB |
Output is correct |
29 |
Correct |
15 ms |
35692 KB |
Output is correct |
30 |
Correct |
16 ms |
35668 KB |
Output is correct |
31 |
Correct |
16 ms |
35668 KB |
Output is correct |
32 |
Correct |
15 ms |
35664 KB |
Output is correct |
33 |
Correct |
15 ms |
34620 KB |
Output is correct |
34 |
Correct |
14 ms |
34516 KB |
Output is correct |
35 |
Correct |
15 ms |
33364 KB |
Output is correct |
36 |
Correct |
17 ms |
34576 KB |
Output is correct |
37 |
Correct |
14 ms |
32372 KB |
Output is correct |
38 |
Correct |
15 ms |
35668 KB |
Output is correct |
39 |
Correct |
16 ms |
35668 KB |
Output is correct |
40 |
Correct |
14 ms |
34640 KB |
Output is correct |
41 |
Correct |
14 ms |
35668 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
468 KB |
Output is correct |
2 |
Execution timed out |
571 ms |
1048576 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
1488 KB |
Output is correct |
5 |
Correct |
2 ms |
2772 KB |
Output is correct |
6 |
Correct |
2 ms |
2764 KB |
Output is correct |
7 |
Correct |
1 ms |
2772 KB |
Output is correct |
8 |
Correct |
2 ms |
2772 KB |
Output is correct |
9 |
Correct |
1 ms |
2772 KB |
Output is correct |
10 |
Correct |
1 ms |
2772 KB |
Output is correct |
11 |
Correct |
1 ms |
2772 KB |
Output is correct |
12 |
Correct |
1 ms |
2772 KB |
Output is correct |
13 |
Correct |
1 ms |
2760 KB |
Output is correct |
14 |
Correct |
1 ms |
2376 KB |
Output is correct |
15 |
Correct |
1 ms |
2772 KB |
Output is correct |
16 |
Correct |
1 ms |
2772 KB |
Output is correct |
17 |
Correct |
1 ms |
2388 KB |
Output is correct |
18 |
Correct |
15 ms |
35744 KB |
Output is correct |
19 |
Correct |
15 ms |
35660 KB |
Output is correct |
20 |
Correct |
16 ms |
35668 KB |
Output is correct |
21 |
Correct |
16 ms |
35668 KB |
Output is correct |
22 |
Correct |
15 ms |
35668 KB |
Output is correct |
23 |
Correct |
15 ms |
35668 KB |
Output is correct |
24 |
Correct |
15 ms |
35696 KB |
Output is correct |
25 |
Correct |
18 ms |
35672 KB |
Output is correct |
26 |
Correct |
14 ms |
35660 KB |
Output is correct |
27 |
Correct |
18 ms |
35668 KB |
Output is correct |
28 |
Correct |
17 ms |
35644 KB |
Output is correct |
29 |
Correct |
15 ms |
35692 KB |
Output is correct |
30 |
Correct |
16 ms |
35668 KB |
Output is correct |
31 |
Correct |
16 ms |
35668 KB |
Output is correct |
32 |
Correct |
15 ms |
35664 KB |
Output is correct |
33 |
Correct |
15 ms |
34620 KB |
Output is correct |
34 |
Correct |
14 ms |
34516 KB |
Output is correct |
35 |
Correct |
15 ms |
33364 KB |
Output is correct |
36 |
Correct |
17 ms |
34576 KB |
Output is correct |
37 |
Correct |
14 ms |
32372 KB |
Output is correct |
38 |
Correct |
15 ms |
35668 KB |
Output is correct |
39 |
Correct |
16 ms |
35668 KB |
Output is correct |
40 |
Correct |
14 ms |
34640 KB |
Output is correct |
41 |
Correct |
14 ms |
35668 KB |
Output is correct |
42 |
Correct |
1 ms |
468 KB |
Output is correct |
43 |
Execution timed out |
571 ms |
1048576 KB |
Time limit exceeded |
44 |
Halted |
0 ms |
0 KB |
- |