#include <bits/stdc++.h>
using namespace std;
int main() {
int n, d;
cin >> n >> d;
vector<int> telephones(n+1);
for (int i = 1; i <= n; i++) {
cin >> telephones[i];
}
int ans = 0;
int last = 1;
int i = last;
while (i < n) {
int x = last;
for (int j = i; j <= min(n, i + d); j++) {
if (telephones[j])
x = j;
}
if (x == last) {
ans++;
last += d;
i = last;
}
else {
i = x;
last = x;
}
}
cout << ans << '\n';
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
432 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
25 ms |
1988 KB |
Output is correct |
9 |
Correct |
25 ms |
2140 KB |
Output is correct |
10 |
Correct |
28 ms |
2112 KB |
Output is correct |