Submission #485688

#	Time	Username	Problem	Language	Result	Execution time	Memory
485688		KazamaHoang	Telefoni (COCI17_telefoni)	C++14	80 / 80	25 ms	3244 KiB

telefoni

#include <bits/stdc++.h>

using namespace std;

int n, d, a[300005], s[300005], res = 0;

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> d;
    for (int i = 1; i <= n; ++ i) {
        cin >> a[i];
        s[i] = s[i-1] + a[i];
    }
    for (int i = 1; i < n;) {
        if (a[i] == 1) {
            int mx = min(n, i + d);
            if (s[mx] - s[i]) {
                ++ i;
            } else {
                ++ res;
                a[mx] = 1;
                i = mx;
            }
        } else ++ i;
    }
    cout << res;
    return 0;
}

• Subtask 1: 80 / 80