#include <bits/stdc++.h>
using namespace std;
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define sp " "
#define endl "\n"
#define pb push_back
#define pii pair<int , int>
#define st first
#define nd second
#define N 300005
int arr[N];
int32_t main()
{
fastio();
int n, d;
cin>>n>>d;
for (int i = 1; i <= n; i++)
cin>>arr[i];
int last = 0, i = 1, ans = 0;
while(i < n)
{
for (int j = i; j <= min(i + d, n); j++)
{
if (arr[j] == 1) last = j;
}
if (last == i)
{
last = i + d;
ans++;
}
i = last;
}
cout<<ans<<endl;
cerr<<"time taken : "<<(float)clock() / CLOCKS_PER_SEC<<" seconds\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
328 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
15 ms |
1968 KB |
Output is correct |
9 |
Correct |
13 ms |
2016 KB |
Output is correct |
10 |
Correct |
13 ms |
2004 KB |
Output is correct |