#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 1000;
int N;
char A[MAXN+10];
int dp[MAXN+10][MAXN+10];
vector<int> V[20];
int solve(int now, int pos)
{
int &ret=dp[now][pos];
if(ret!=-1) return ret;
ret=987654321;
for(int i=0; i<10; i++)
{
if(i==4) continue;
auto it=upper_bound(V[i].begin(), V[i].end(), now);
if(it==V[i].end()) continue;
ret=min(ret, solve(*it, pos)+2);
}
if(now>pos)
{
int p=now-pos+lower_bound(V[4].begin(), V[4].end(), now)-lower_bound(V[4].begin(), V[4].end(), pos);
auto jt=upper_bound(V[4].begin(), V[4].end(), now);
if(jt==V[4].end()) ret=min(ret, p);
else
{
for(int i=0; i<10; i++)
{
if(i==4) continue;
auto it=upper_bound(V[i].begin(), V[i].end(), pos);
if(it==V[i].end()) continue;
ret=min(ret, solve(*it, *jt)+p+2);
}
}
}
//printf("%d %d : %d\n", now, pos, ret);
return ret;
}
int main()
{
scanf("%d", &N);
scanf(" %s", A+1);
for(int i=1; i<=N; i++) V[A[i]-'a'].push_back(i);
if(V[4].empty()) return !printf("0\n");
memset(dp, -1, sizeof(dp));
printf("%d\n", solve(1, V[4].front()));
}
Compilation message
vim.cpp: In function 'int main()':
vim.cpp:50:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &N);
~~~~~^~~~~~~~~~
vim.cpp:51:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf(" %s", A+1);
~~~~~^~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
12 ms |
4352 KB |
Output is correct |
| 2 |
Incorrect |
13 ms |
4480 KB |
Output isn't correct |
| 3 |
Incorrect |
8 ms |
4352 KB |
Output isn't correct |
| 4 |
Incorrect |
17 ms |
4352 KB |
Output isn't correct |
| 5 |
Correct |
16 ms |
4352 KB |
Output is correct |
| 6 |
Incorrect |
21 ms |
4352 KB |
Output isn't correct |
| 7 |
Incorrect |
20 ms |
4352 KB |
Output isn't correct |
| 8 |
Correct |
3 ms |
4480 KB |
Output is correct |
| 9 |
Correct |
3 ms |
4352 KB |
Output is correct |
| 10 |
Incorrect |
3 ms |
4352 KB |
Output isn't correct |
| 11 |
Correct |
3 ms |
4352 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4352 KB |
Output is correct |
| 13 |
Correct |
12 ms |
4352 KB |
Output is correct |
| 14 |
Incorrect |
13 ms |
4352 KB |
Output isn't correct |
| 15 |
Incorrect |
8 ms |
4352 KB |
Output isn't correct |
| 16 |
Incorrect |
13 ms |
4352 KB |
Output isn't correct |
| 17 |
Incorrect |
17 ms |
4352 KB |
Output isn't correct |
| 18 |
Incorrect |
13 ms |
4352 KB |
Output isn't correct |
| 19 |
Correct |
9 ms |
4352 KB |
Output is correct |
| 20 |
Correct |
11 ms |
4352 KB |
Output is correct |
| 21 |
Incorrect |
15 ms |
4352 KB |
Output isn't correct |
| 22 |
Correct |
14 ms |
4352 KB |
Output is correct |
| 23 |
Incorrect |
12 ms |
4352 KB |
Output isn't correct |
| 24 |
Incorrect |
12 ms |
4352 KB |
Output isn't correct |
| 25 |
Incorrect |
13 ms |
4352 KB |
Output isn't correct |
| 26 |
Incorrect |
14 ms |
4352 KB |
Output isn't correct |
| 27 |
Incorrect |
18 ms |
4288 KB |
Output isn't correct |
| 28 |
Incorrect |
21 ms |
4352 KB |
Output isn't correct |
| 29 |
Incorrect |
20 ms |
4352 KB |
Output isn't correct |
| 30 |
Incorrect |
14 ms |
4352 KB |
Output isn't correct |
| 31 |
Incorrect |
13 ms |
4352 KB |
Output isn't correct |
| 32 |
Incorrect |
15 ms |
4352 KB |
Output isn't correct |
| 33 |
Incorrect |
15 ms |
4352 KB |
Output isn't correct |
| 34 |
Incorrect |
17 ms |
4352 KB |
Output isn't correct |
| 35 |
Incorrect |
17 ms |
4352 KB |
Output isn't correct |
| 36 |
Incorrect |
20 ms |
4472 KB |
Output isn't correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
1 ms |
640 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 2 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 3 |
Runtime error |
3 ms |
640 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 |
640 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 6 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 7 |
Runtime error |
3 ms |
640 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 8 |
Runtime error |
3 ms |
640 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 |
2 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| # |
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 |
1 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 |
2 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 |
1 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) |
| 11 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 12 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 13 |
Runtime error |
2 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 14 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 15 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 16 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 17 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 18 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 19 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 20 |
Runtime error |
1 ms |
512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
