#include <bits/stdc++.h>
using namespace std;
#define MAX_N 65
#define INF 0x3f3f3f3f
int n;
string s;
vector <int> pos[3];
int root = -1;
vector<vector<vector<int>>> dp[3] ,to_rch[3];
int solve(int t ,int p0 ,int p1 ,int p2){
int i = p0+p1+p2;
if(i == n)
return 0;
int&ret = (~t ? dp[t][p0][p1][p2] : root);
if(~ret)
return ret;
ret = INF;
int st[] = {p0 ,p1 ,p2};
for(int nt=0; nt<3; nt++)
if(t != nt && st[nt] < pos[nt].size()){
int cost = to_rch[nt][st[0]][st[1]][st[2]];
st[nt]++;
ret = min(ret ,cost+solve(nt ,st[0] ,st[1] ,st[2]));
st[nt]--;
}
return ret;
}
int main()
{
//freopen("input.in" ,"r" ,stdin);
while(cin >> n){
pos[0].clear();
pos[1].clear();
pos[2].clear();
cin >> s; n = s.size();
for(int i=0; i<n; i++){
if(s[i] == 'R') pos[0].push_back(i);
if(s[i] == 'G') pos[1].push_back(i);
if(s[i] == 'Y') pos[2].push_back(i);
}
for(int i=0; i<3; i++){
dp[i].resize(pos[0].size()+1 ,vector<vector<int>>(pos[1].size()+1 ,vector<int>(pos[2].size()+1 ,-1)));
to_rch[i].resize(pos[0].size()+1 ,vector<vector<int>>(pos[1].size()+1 ,vector<int>(pos[2].size()+1 ,0)));
}
for(int p0=0; p0<=pos[0].size(); p0++)
for(int p1=0; p1<=pos[1].size(); p1++)
for(int p2=0; p2<=pos[2].size(); p2++)
{
int st[] = {p0 ,p1 ,p2};
for(int t=0; t<3; t++) if(st[t] < pos[t].size())
for(int h=0; h<3; h++) if(h != t)
to_rch[t][p0][p1][p2] += upper_bound(pos[h].begin()+st[h] ,pos[h].end() ,pos[t][st[t]])-(pos[h].begin()+st[h]);
}
root = -1 ,solve(-1 ,0 ,0 ,0);
cout << (root == INF ? -1 : root) << endl;
}
}
Compilation message
joi2019_ho_t3.cpp: In function 'int solve(int, int, int, int)':
joi2019_ho_t3.cpp:24:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(t != nt && st[nt] < pos[nt].size()){
~~~~~~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:55:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int p0=0; p0<=pos[0].size(); p0++)
~~^~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:56:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int p1=0; p1<=pos[1].size(); p1++)
~~^~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:57:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int p2=0; p2<=pos[2].size(); p2++)
~~^~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:60:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int t=0; t<3; t++) if(st[t] < pos[t].size())
~~~~~~^~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
128 KB |
Output is correct |
4 |
Correct |
2 ms |
256 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 |
256 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 |
252 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 |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
128 KB |
Output is correct |
4 |
Correct |
2 ms |
256 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 |
256 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 |
252 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 |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
4 ms |
632 KB |
Output is correct |
19 |
Correct |
4 ms |
632 KB |
Output is correct |
20 |
Correct |
3 ms |
632 KB |
Output is correct |
21 |
Correct |
3 ms |
632 KB |
Output is correct |
22 |
Correct |
3 ms |
632 KB |
Output is correct |
23 |
Correct |
3 ms |
632 KB |
Output is correct |
24 |
Correct |
3 ms |
504 KB |
Output is correct |
25 |
Correct |
2 ms |
632 KB |
Output is correct |
26 |
Correct |
2 ms |
632 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 |
632 KB |
Output is correct |
31 |
Correct |
3 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 |
2 ms |
504 KB |
Output is correct |
35 |
Correct |
3 ms |
632 KB |
Output is correct |
36 |
Correct |
3 ms |
632 KB |
Output is correct |
37 |
Correct |
3 ms |
608 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 |
376 KB |
Output is correct |
41 |
Correct |
2 ms |
504 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
25 ms |
13688 KB |
Output is correct |
3 |
Correct |
25 ms |
13660 KB |
Output is correct |
4 |
Correct |
32 ms |
13688 KB |
Output is correct |
5 |
Correct |
26 ms |
13688 KB |
Output is correct |
6 |
Correct |
26 ms |
13688 KB |
Output is correct |
7 |
Correct |
26 ms |
13688 KB |
Output is correct |
8 |
Correct |
25 ms |
13688 KB |
Output is correct |
9 |
Correct |
25 ms |
13560 KB |
Output is correct |
10 |
Correct |
26 ms |
13688 KB |
Output is correct |
11 |
Correct |
25 ms |
13688 KB |
Output is correct |
12 |
Correct |
8 ms |
3960 KB |
Output is correct |
13 |
Correct |
13 ms |
6648 KB |
Output is correct |
14 |
Correct |
18 ms |
9436 KB |
Output is correct |
15 |
Correct |
26 ms |
13688 KB |
Output is correct |
16 |
Correct |
26 ms |
13688 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
128 KB |
Output is correct |
4 |
Correct |
2 ms |
256 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 |
256 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 |
252 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 |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
4 ms |
632 KB |
Output is correct |
19 |
Correct |
4 ms |
632 KB |
Output is correct |
20 |
Correct |
3 ms |
632 KB |
Output is correct |
21 |
Correct |
3 ms |
632 KB |
Output is correct |
22 |
Correct |
3 ms |
632 KB |
Output is correct |
23 |
Correct |
3 ms |
632 KB |
Output is correct |
24 |
Correct |
3 ms |
504 KB |
Output is correct |
25 |
Correct |
2 ms |
632 KB |
Output is correct |
26 |
Correct |
2 ms |
632 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 |
632 KB |
Output is correct |
31 |
Correct |
3 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 |
2 ms |
504 KB |
Output is correct |
35 |
Correct |
3 ms |
632 KB |
Output is correct |
36 |
Correct |
3 ms |
632 KB |
Output is correct |
37 |
Correct |
3 ms |
608 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 |
376 KB |
Output is correct |
41 |
Correct |
2 ms |
504 KB |
Output is correct |
42 |
Correct |
2 ms |
376 KB |
Output is correct |
43 |
Correct |
25 ms |
13688 KB |
Output is correct |
44 |
Correct |
25 ms |
13660 KB |
Output is correct |
45 |
Correct |
32 ms |
13688 KB |
Output is correct |
46 |
Correct |
26 ms |
13688 KB |
Output is correct |
47 |
Correct |
26 ms |
13688 KB |
Output is correct |
48 |
Correct |
26 ms |
13688 KB |
Output is correct |
49 |
Correct |
25 ms |
13688 KB |
Output is correct |
50 |
Correct |
25 ms |
13560 KB |
Output is correct |
51 |
Correct |
26 ms |
13688 KB |
Output is correct |
52 |
Correct |
25 ms |
13688 KB |
Output is correct |
53 |
Correct |
8 ms |
3960 KB |
Output is correct |
54 |
Correct |
13 ms |
6648 KB |
Output is correct |
55 |
Correct |
18 ms |
9436 KB |
Output is correct |
56 |
Correct |
26 ms |
13688 KB |
Output is correct |
57 |
Correct |
26 ms |
13688 KB |
Output is correct |
58 |
Execution timed out |
566 ms |
60896 KB |
Time limit exceeded |
59 |
Halted |
0 ms |
0 KB |
- |