#include <bits/stdc++.h>
using namespace std;
vector<int> G , R , Y;
int n;
string s;
int dp[61][61][61][4];
int brute(int i , int j , int k , int lst){
int sz = i + j + k ;
if (sz == n) return 0;
if (~dp[i][j][k][lst]) return dp[i][j][k][lst];
int a = 1e8 , b = 1e8 , c = 1e8;
if (lst != 1 && i < G.size()){
int x = 0;
for (int l = 0 ; l < j ; l++) if (R[l] > G[i]) x++;
for (int l = 0 ; l < k ; l++) if (Y[l] > G[i]) x++;
a = brute(i+1 , j , k , 1) + x ;
}
if (lst != 2 && j < R.size()){
int x = 0;
for (int l = 0 ; l < i ; l++) if (G[l] > R[j]) x++;
for (int l = 0 ; l < k ; l++) if (Y[l] > R[j]) x++;
b = brute(i , j+1 , k , 2) + x ;
}
if (lst != 3 && k < Y.size()){
int x = 0;
for (int l = 0 ; l < i ; l++) if (G[l] > Y[k]) x++;
for (int l = 0 ; l < j ; l++) if (R[l] > Y[k]) x++;
c = brute(i , j , k+1 , 3) + x;
}
return dp[i][j][k][lst] = min({a , b , c});
}
void doWork(){
cin >> n >> s;
for (int i = 0 ; i < n ; i++){
if (s[i] == 'G') G.push_back(i);
else if (s[i] == 'R') R.push_back(i);
else Y.push_back(i);
}
memset(dp , -1 , sizeof dp);
int ans = brute(0 , 0 , 0 , 0);
cout << (ans == 1e8 ? -1 : ans) ;
}
signed main(){
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
doWork();
}
Compilation message
joi2019_ho_t3.cpp: In function 'int brute(int, int, int, int)':
joi2019_ho_t3.cpp:15:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
15 | if (lst != 1 && i < G.size()){
| ~~^~~~~~~~~~
joi2019_ho_t3.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
21 | if (lst != 2 && j < R.size()){
| ~~^~~~~~~~~~
joi2019_ho_t3.cpp:27:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
27 | if (lst != 3 && k < Y.size()){
| ~~^~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3928 KB |
Output is correct |
2 |
Correct |
2 ms |
3932 KB |
Output is correct |
3 |
Correct |
1 ms |
3932 KB |
Output is correct |
4 |
Correct |
2 ms |
3932 KB |
Output is correct |
5 |
Correct |
1 ms |
3932 KB |
Output is correct |
6 |
Correct |
1 ms |
3932 KB |
Output is correct |
7 |
Correct |
1 ms |
3932 KB |
Output is correct |
8 |
Correct |
1 ms |
3932 KB |
Output is correct |
9 |
Correct |
1 ms |
3932 KB |
Output is correct |
10 |
Correct |
1 ms |
3932 KB |
Output is correct |
11 |
Correct |
1 ms |
3932 KB |
Output is correct |
12 |
Correct |
1 ms |
3932 KB |
Output is correct |
13 |
Correct |
2 ms |
3932 KB |
Output is correct |
14 |
Correct |
1 ms |
3932 KB |
Output is correct |
15 |
Correct |
1 ms |
3932 KB |
Output is correct |
16 |
Correct |
1 ms |
3788 KB |
Output is correct |
17 |
Correct |
1 ms |
3932 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3928 KB |
Output is correct |
2 |
Correct |
2 ms |
3932 KB |
Output is correct |
3 |
Correct |
1 ms |
3932 KB |
Output is correct |
4 |
Correct |
2 ms |
3932 KB |
Output is correct |
5 |
Correct |
1 ms |
3932 KB |
Output is correct |
6 |
Correct |
1 ms |
3932 KB |
Output is correct |
7 |
Correct |
1 ms |
3932 KB |
Output is correct |
8 |
Correct |
1 ms |
3932 KB |
Output is correct |
9 |
Correct |
1 ms |
3932 KB |
Output is correct |
10 |
Correct |
1 ms |
3932 KB |
Output is correct |
11 |
Correct |
1 ms |
3932 KB |
Output is correct |
12 |
Correct |
1 ms |
3932 KB |
Output is correct |
13 |
Correct |
2 ms |
3932 KB |
Output is correct |
14 |
Correct |
1 ms |
3932 KB |
Output is correct |
15 |
Correct |
1 ms |
3932 KB |
Output is correct |
16 |
Correct |
1 ms |
3788 KB |
Output is correct |
17 |
Correct |
1 ms |
3932 KB |
Output is correct |
18 |
Correct |
2 ms |
3932 KB |
Output is correct |
19 |
Correct |
2 ms |
3932 KB |
Output is correct |
20 |
Correct |
2 ms |
3932 KB |
Output is correct |
21 |
Correct |
2 ms |
3932 KB |
Output is correct |
22 |
Correct |
2 ms |
3932 KB |
Output is correct |
23 |
Correct |
2 ms |
3932 KB |
Output is correct |
24 |
Correct |
2 ms |
3932 KB |
Output is correct |
25 |
Correct |
1 ms |
3932 KB |
Output is correct |
26 |
Correct |
1 ms |
3932 KB |
Output is correct |
27 |
Correct |
2 ms |
3932 KB |
Output is correct |
28 |
Correct |
2 ms |
3932 KB |
Output is correct |
29 |
Correct |
2 ms |
3932 KB |
Output is correct |
30 |
Correct |
2 ms |
3932 KB |
Output is correct |
31 |
Correct |
2 ms |
3928 KB |
Output is correct |
32 |
Correct |
2 ms |
3932 KB |
Output is correct |
33 |
Correct |
1 ms |
3936 KB |
Output is correct |
34 |
Correct |
2 ms |
3932 KB |
Output is correct |
35 |
Correct |
2 ms |
3792 KB |
Output is correct |
36 |
Correct |
2 ms |
3932 KB |
Output is correct |
37 |
Correct |
2 ms |
3932 KB |
Output is correct |
38 |
Correct |
2 ms |
3940 KB |
Output is correct |
39 |
Correct |
2 ms |
3792 KB |
Output is correct |
40 |
Correct |
1 ms |
3936 KB |
Output is correct |
41 |
Correct |
1 ms |
3936 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
3932 KB |
Output is correct |
2 |
Runtime error |
4 ms |
7776 KB |
Execution killed with signal 11 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3928 KB |
Output is correct |
2 |
Correct |
2 ms |
3932 KB |
Output is correct |
3 |
Correct |
1 ms |
3932 KB |
Output is correct |
4 |
Correct |
2 ms |
3932 KB |
Output is correct |
5 |
Correct |
1 ms |
3932 KB |
Output is correct |
6 |
Correct |
1 ms |
3932 KB |
Output is correct |
7 |
Correct |
1 ms |
3932 KB |
Output is correct |
8 |
Correct |
1 ms |
3932 KB |
Output is correct |
9 |
Correct |
1 ms |
3932 KB |
Output is correct |
10 |
Correct |
1 ms |
3932 KB |
Output is correct |
11 |
Correct |
1 ms |
3932 KB |
Output is correct |
12 |
Correct |
1 ms |
3932 KB |
Output is correct |
13 |
Correct |
2 ms |
3932 KB |
Output is correct |
14 |
Correct |
1 ms |
3932 KB |
Output is correct |
15 |
Correct |
1 ms |
3932 KB |
Output is correct |
16 |
Correct |
1 ms |
3788 KB |
Output is correct |
17 |
Correct |
1 ms |
3932 KB |
Output is correct |
18 |
Correct |
2 ms |
3932 KB |
Output is correct |
19 |
Correct |
2 ms |
3932 KB |
Output is correct |
20 |
Correct |
2 ms |
3932 KB |
Output is correct |
21 |
Correct |
2 ms |
3932 KB |
Output is correct |
22 |
Correct |
2 ms |
3932 KB |
Output is correct |
23 |
Correct |
2 ms |
3932 KB |
Output is correct |
24 |
Correct |
2 ms |
3932 KB |
Output is correct |
25 |
Correct |
1 ms |
3932 KB |
Output is correct |
26 |
Correct |
1 ms |
3932 KB |
Output is correct |
27 |
Correct |
2 ms |
3932 KB |
Output is correct |
28 |
Correct |
2 ms |
3932 KB |
Output is correct |
29 |
Correct |
2 ms |
3932 KB |
Output is correct |
30 |
Correct |
2 ms |
3932 KB |
Output is correct |
31 |
Correct |
2 ms |
3928 KB |
Output is correct |
32 |
Correct |
2 ms |
3932 KB |
Output is correct |
33 |
Correct |
1 ms |
3936 KB |
Output is correct |
34 |
Correct |
2 ms |
3932 KB |
Output is correct |
35 |
Correct |
2 ms |
3792 KB |
Output is correct |
36 |
Correct |
2 ms |
3932 KB |
Output is correct |
37 |
Correct |
2 ms |
3932 KB |
Output is correct |
38 |
Correct |
2 ms |
3940 KB |
Output is correct |
39 |
Correct |
2 ms |
3792 KB |
Output is correct |
40 |
Correct |
1 ms |
3936 KB |
Output is correct |
41 |
Correct |
1 ms |
3936 KB |
Output is correct |
42 |
Correct |
1 ms |
3932 KB |
Output is correct |
43 |
Runtime error |
4 ms |
7776 KB |
Execution killed with signal 11 |
44 |
Halted |
0 ms |
0 KB |
- |