#include <bits/stdc++.h>
using namespace std;
int main() {
int n, d;
cin >> n >> d;
int dp[n+1]; dp[1] = 0;
multiset<int> ms; ms.insert(0);
for(int i=1; i<=n; i++) {
int x; cin >> x;
if(i == 1) continue;
dp[i] = *ms.begin() + (x ^ 1);
ms.insert(dp[i]);
if(i > d) ms.erase(ms.find(dp[i-d]));
}
cout << dp[n] << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
57 ms |
2132 KB |
Output is correct |
9 |
Correct |
52 ms |
2128 KB |
Output is correct |
10 |
Correct |
57 ms |
2128 KB |
Output is correct |