Submission #247904

#	Time	Username	Problem	Language	Result	Execution time	Memory
247904		NONAME	Telefoni (COCI17_telefoni)	C++14	80 / 80	18 ms	2176 KiB

telefoni

#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";
}

• Subtask 1: 80 / 80