#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);
}
}
if(r > (n+1)/2 || g > (n+1)/2 || b > (n+1)/2) {
cout << -1 << endl;
return 0;
}
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;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2392 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
6492 KB |
Output is correct |
5 |
Correct |
2 ms |
10840 KB |
Output is correct |
6 |
Correct |
1 ms |
12636 KB |
Output is correct |
7 |
Correct |
2 ms |
14684 KB |
Output is correct |
8 |
Correct |
1 ms |
12764 KB |
Output is correct |
9 |
Correct |
1 ms |
12636 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Incorrect |
1 ms |
10588 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2392 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
6492 KB |
Output is correct |
5 |
Correct |
2 ms |
10840 KB |
Output is correct |
6 |
Correct |
1 ms |
12636 KB |
Output is correct |
7 |
Correct |
2 ms |
14684 KB |
Output is correct |
8 |
Correct |
1 ms |
12764 KB |
Output is correct |
9 |
Correct |
1 ms |
12636 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Incorrect |
1 ms |
10588 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Output is correct |
2 |
Correct |
73 ms |
277192 KB |
Output is correct |
3 |
Correct |
49 ms |
276828 KB |
Output is correct |
4 |
Correct |
49 ms |
278548 KB |
Output is correct |
5 |
Correct |
47 ms |
279632 KB |
Output is correct |
6 |
Correct |
48 ms |
278352 KB |
Output is correct |
7 |
Correct |
48 ms |
277588 KB |
Output is correct |
8 |
Correct |
47 ms |
277692 KB |
Output is correct |
9 |
Correct |
47 ms |
278608 KB |
Output is correct |
10 |
Correct |
51 ms |
304720 KB |
Output is correct |
11 |
Correct |
53 ms |
309072 KB |
Output is correct |
12 |
Correct |
19 ms |
197468 KB |
Output is correct |
13 |
Correct |
26 ms |
257112 KB |
Output is correct |
14 |
Correct |
34 ms |
276564 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2392 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
6492 KB |
Output is correct |
5 |
Correct |
2 ms |
10840 KB |
Output is correct |
6 |
Correct |
1 ms |
12636 KB |
Output is correct |
7 |
Correct |
2 ms |
14684 KB |
Output is correct |
8 |
Correct |
1 ms |
12764 KB |
Output is correct |
9 |
Correct |
1 ms |
12636 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Incorrect |
1 ms |
10588 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |