Submission #247904

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
2479042020-07-12 06:22:39NONAMETelefoni (COCI17_telefoni)C++14
80 / 80
18 ms2176 KiB
#include <bits/stdc++.h>
#define dbg(x) cerr << #x << " = " << x << "\n"
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie()
using namespace std;
using ll = long long;
int main() {
fast_io;
int n, d;
cin >> n >> d;
vector <int> a(n);
for (int i = 0; i < n; ++i)
cin >> a[i];
int lst = 0, ans = 0;
for (int i = 1; i < n; ++i)
if (a[i] == 1)
ans += max(0, (i - lst - 1) / d), lst = i;
cout << ans << "\n";
}
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#Verdict Execution timeMemoryGrader output
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