#include<bits/stdc++.h>
using namespace std;
#define int long long
#define nl '\n'
int dp[401][401][401][3];
inline void solve(){
int n;
cin>>n;
string s;
cin>>s;
s = " "+s;
int p[3][n+1], c[3];
for(int l=0; l<3; l++) for(int i=1; i<=n; i++) p[l][i] = 1e10;
p[0][0] = p[1][0] = p[2][0] = c[0] = c[1] = c[2] = 0;
for(int i=1; i<=n; i++){
if(s[i] == 'R') p[0][++c[0]] = i;
else if(s[i] == 'G') p[1][++c[1]] = i;
else p[2][++c[2]] = i;
}
for(int r=0; r<=n; r++) for(int g=0; g<=n; g++) for(int l=0; l<3; l++) dp[0][r][g][l] = 1e9;
for(int l=0; l<3; l++) dp[0][0][0][l] = 0;
for(int i=1; i<=n; i++){
for(int r=0; r<=n; r++){
for(int g=0; g<=n; g++){
int y = i - r - g;
dp[i][r][g][0] = dp[i][r][g][1] = dp[i][r][g][2] = 1e9;
if(y < 0) continue;
if(r > 0) dp[i][r][g][0] = min(dp[i-1][r-1][g][1], dp[i-1][r-1][g][2]) + max(0LL, p[0][r] - i);
if(g > 0) dp[i][r][g][1] = min(dp[i-1][r][g-1][0], dp[i-1][r][g-1][2]) + max(0LL, p[1][g] - i);
if(y > 0) dp[i][r][g][2] = min(dp[i-1][r][g][0], dp[i-1][r][g][1]) + max(0LL, p[2][y] - i);
}
}
}
int ans = min({dp[n][c[0]][c[1]][0], dp[n][c[0]][c[1]][1], dp[n][c[0]][c[1]][2]});
cout<<(ans >= 1e9 ? -1 : ans)<<nl;
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(NULL);cout.tie(NULL);
int t = 1;
//cin>>t;
while(t--) solve();
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
4432 KB |
Output is correct |
3 |
Correct |
2 ms |
6480 KB |
Output is correct |
4 |
Correct |
3 ms |
22864 KB |
Output is correct |
5 |
Correct |
5 ms |
35408 KB |
Output is correct |
6 |
Correct |
5 ms |
35408 KB |
Output is correct |
7 |
Correct |
5 ms |
35408 KB |
Output is correct |
8 |
Correct |
4 ms |
35408 KB |
Output is correct |
9 |
Correct |
4 ms |
35408 KB |
Output is correct |
10 |
Correct |
4 ms |
35408 KB |
Output is correct |
11 |
Incorrect |
4 ms |
35408 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
4432 KB |
Output is correct |
3 |
Correct |
2 ms |
6480 KB |
Output is correct |
4 |
Correct |
3 ms |
22864 KB |
Output is correct |
5 |
Correct |
5 ms |
35408 KB |
Output is correct |
6 |
Correct |
5 ms |
35408 KB |
Output is correct |
7 |
Correct |
5 ms |
35408 KB |
Output is correct |
8 |
Correct |
4 ms |
35408 KB |
Output is correct |
9 |
Correct |
4 ms |
35408 KB |
Output is correct |
10 |
Correct |
4 ms |
35408 KB |
Output is correct |
11 |
Incorrect |
4 ms |
35408 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
6480 KB |
Output is correct |
2 |
Execution timed out |
522 ms |
1048576 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
4432 KB |
Output is correct |
3 |
Correct |
2 ms |
6480 KB |
Output is correct |
4 |
Correct |
3 ms |
22864 KB |
Output is correct |
5 |
Correct |
5 ms |
35408 KB |
Output is correct |
6 |
Correct |
5 ms |
35408 KB |
Output is correct |
7 |
Correct |
5 ms |
35408 KB |
Output is correct |
8 |
Correct |
4 ms |
35408 KB |
Output is correct |
9 |
Correct |
4 ms |
35408 KB |
Output is correct |
10 |
Correct |
4 ms |
35408 KB |
Output is correct |
11 |
Incorrect |
4 ms |
35408 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |