#include<bits/stdc++.h>
using namespace std;
#define ll int
#define pii pair<ll,ll>
#define pb push_back
#define fi first
#define se second
const ll N = 403;
const ll INF = 1e9;
ll n,r,g,b;
string s;
vector<ll> pos[5];
ll dp[N][N][N][3];
int main() {
cin >> n >> s;
s = '!' + s;
for(int i=1; i<=n; i++) {
if(s[i] == 'R') {
r++;
pos[0].pb(i);
}
else if(s[i] == 'G') {
g++;
pos[1].pb(i);
}
else if(s[i] == 'Y') {
b++;
pos[2].pb(i);
}
}
for(int i=0; i<=r; i++) {
for(int j=0; j<=g; j++) {
for(int k=0; k<=b; k++) {
for(int l=0; l<=2; l++) dp[i][j][k][l] = INF;
}
}
}
dp[0][0][0][0] = 0;
dp[0][0][0][1] = 0;
dp[0][0][0][2] = 0;
for(int i=0; i<=r; i++) {
for(int j=0; j<=g; j++) {
for(int k=0; k<=b; k++) {
if(i) dp[i][j][k][0] = min(dp[i-1][j][k][1],dp[i-1][j][k][2]) + abs(i+j+k-pos[0][i-1]);
if(j) dp[i][j][k][1] = min(dp[i][j-1][k][0],dp[i][j-1][k][2]) + abs(i+j+k-pos[1][j-1]);
if(k) dp[i][j][k][2] = min(dp[i][j][k-1][0],dp[i][j][k-1][1]) + abs(i+j+k-pos[2][k-1]);
}
}
}
ll ans = min({dp[r][g][b][0],dp[r][g][b][1],dp[r][g][b][2]});
if(ans >= INF) cout << -1 << endl;
else cout << ans/2 << endl;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
6492 KB |
Output is correct |
5 |
Correct |
1 ms |
10588 KB |
Output is correct |
6 |
Correct |
2 ms |
12636 KB |
Output is correct |
7 |
Correct |
2 ms |
14680 KB |
Output is correct |
8 |
Correct |
1 ms |
12636 KB |
Output is correct |
9 |
Correct |
2 ms |
12636 KB |
Output is correct |
10 |
Correct |
3 ms |
20828 KB |
Output is correct |
11 |
Incorrect |
2 ms |
10748 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
6492 KB |
Output is correct |
5 |
Correct |
1 ms |
10588 KB |
Output is correct |
6 |
Correct |
2 ms |
12636 KB |
Output is correct |
7 |
Correct |
2 ms |
14680 KB |
Output is correct |
8 |
Correct |
1 ms |
12636 KB |
Output is correct |
9 |
Correct |
2 ms |
12636 KB |
Output is correct |
10 |
Correct |
3 ms |
20828 KB |
Output is correct |
11 |
Incorrect |
2 ms |
10748 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Output is correct |
2 |
Correct |
46 ms |
301104 KB |
Output is correct |
3 |
Correct |
50 ms |
299788 KB |
Output is correct |
4 |
Correct |
51 ms |
300112 KB |
Output is correct |
5 |
Correct |
48 ms |
300108 KB |
Output is correct |
6 |
Correct |
46 ms |
299860 KB |
Output is correct |
7 |
Correct |
47 ms |
301652 KB |
Output is correct |
8 |
Correct |
46 ms |
301600 KB |
Output is correct |
9 |
Correct |
46 ms |
301184 KB |
Output is correct |
10 |
Correct |
46 ms |
302420 KB |
Output is correct |
11 |
Correct |
47 ms |
302360 KB |
Output is correct |
12 |
Correct |
20 ms |
197464 KB |
Output is correct |
13 |
Correct |
26 ms |
247092 KB |
Output is correct |
14 |
Correct |
36 ms |
267348 KB |
Output is correct |
15 |
Correct |
47 ms |
300772 KB |
Output is correct |
16 |
Correct |
48 ms |
299404 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
6492 KB |
Output is correct |
5 |
Correct |
1 ms |
10588 KB |
Output is correct |
6 |
Correct |
2 ms |
12636 KB |
Output is correct |
7 |
Correct |
2 ms |
14680 KB |
Output is correct |
8 |
Correct |
1 ms |
12636 KB |
Output is correct |
9 |
Correct |
2 ms |
12636 KB |
Output is correct |
10 |
Correct |
3 ms |
20828 KB |
Output is correct |
11 |
Incorrect |
2 ms |
10748 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |