#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef long long ll;
const int maxn = 500 + 10;
int nex[maxn][12];
int dp[maxn][maxn];
int main(){
ios_base::sync_with_stdio(false);
int n;
string s;
cin >> n >> s;
for (int i = 0; i < 10; i++){
int last = -1;
for (int j = n-1; j >= 0; j--){
if (last == -1)
nex[j][i] = j;
else
nex[j][i] = last;
if ((int)(s[j] - 'a') == i and s[j] != 'e')
last = j;
}
}
vector<int> e;
for (int i = 0; i < n; i++)
if (s[i] == 'e')
e.push_back(i);
if (e.empty())
return cout << 0 << endl, 0;
int laste = e.back();
int m = e.size();
memset(dp, 63, sizeof dp);
dp[0][0] = 0;
for (int i = 0; i < m; i++){
for (int j = 0; j <= i; j++){
int idx = 0;
if (j > 0){
idx = e[j-1];
while (s[idx] == 'e')
idx ++;
}
int cnt = 0;
while (idx < laste){
int mxm = idx;
cnt += 2;
for (int c = 0; c < 10; c++){
if (nex[idx][c] == idx)
continue;
mxm = max(mxm, nex[idx][c]);
int it = lower_bound(e.begin(), e.end(), nex[idx][c]) - e.begin();
if (it == i)
continue;
dp[it][i+1] = min(dp[it][i+1], dp[i][j] + cnt + (nex[idx][c]-e[i]) + (it-i));
}
idx = mxm;
}
}
}
int answer = 3*n;
for (int i = 1; i <= m; i++)
answer = min(answer, dp[m][i]);
cout << answer << endl;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
15 ms |
1408 KB |
Output is correct |
| 2 |
Incorrect |
9 ms |
1408 KB |
Output isn't correct |
| 3 |
Incorrect |
6 ms |
1408 KB |
Output isn't correct |
| 4 |
Correct |
12 ms |
1408 KB |
Output is correct |
| 5 |
Correct |
5 ms |
1408 KB |
Output is correct |
| 6 |
Correct |
41 ms |
1408 KB |
Output is correct |
| 7 |
Correct |
20 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 13 |
Correct |
14 ms |
1408 KB |
Output is correct |
| 14 |
Incorrect |
10 ms |
1408 KB |
Output isn't correct |
| 15 |
Incorrect |
5 ms |
1408 KB |
Output isn't correct |
| 16 |
Correct |
16 ms |
1408 KB |
Output is correct |
| 17 |
Incorrect |
9 ms |
1408 KB |
Output isn't correct |
| 18 |
Correct |
13 ms |
1408 KB |
Output is correct |
| 19 |
Correct |
6 ms |
1408 KB |
Output is correct |
| 20 |
Correct |
8 ms |
1408 KB |
Output is correct |
| 21 |
Correct |
12 ms |
1408 KB |
Output is correct |
| 22 |
Correct |
5 ms |
1384 KB |
Output is correct |
| 23 |
Incorrect |
2 ms |
1408 KB |
Output isn't correct |
| 24 |
Incorrect |
4 ms |
1408 KB |
Output isn't correct |
| 25 |
Incorrect |
5 ms |
1408 KB |
Output isn't correct |
| 26 |
Correct |
14 ms |
1408 KB |
Output is correct |
| 27 |
Correct |
29 ms |
1408 KB |
Output is correct |
| 28 |
Correct |
43 ms |
1408 KB |
Output is correct |
| 29 |
Correct |
22 ms |
1408 KB |
Output is correct |
| 30 |
Incorrect |
11 ms |
1408 KB |
Output isn't correct |
| 31 |
Incorrect |
6 ms |
1408 KB |
Output isn't correct |
| 32 |
Incorrect |
11 ms |
1408 KB |
Output isn't correct |
| 33 |
Incorrect |
13 ms |
1408 KB |
Output isn't correct |
| 34 |
Correct |
26 ms |
1408 KB |
Output is correct |
| 35 |
Correct |
25 ms |
1408 KB |
Output is correct |
| 36 |
Correct |
21 ms |
1408 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 2 |
Runtime error |
2 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 3 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 4 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 5 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 6 |
Runtime error |
2 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 7 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 8 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 9 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 10 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
2 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 2 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 3 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 4 |
Runtime error |
2 ms |
896 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 5 |
Runtime error |
1 ms |
896 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 6 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 7 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 8 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 9 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 10 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 11 |
Runtime error |
1 ms |
896 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 12 |
Runtime error |
1 ms |
896 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 13 |
Runtime error |
1 ms |
896 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 14 |
Runtime error |
2 ms |
896 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 15 |
Runtime error |
2 ms |
896 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 16 |
Runtime error |
2 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 17 |
Runtime error |
2 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 18 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 19 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 20 |
Runtime error |
1 ms |
768 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
