Submission #1311547

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311547		madamadam3	Telefoni (COCI17_telefoni)	C++20	56 / 80	1096 ms	3912 KiB

telefoni

#include <bits/stdc++.h>

using namespace std;

int main() {
    cin.tie(0)->sync_with_stdio(0);

    int n, d; cin >> n >> d;
    vector<int> a(n); for (int i = 0; i < n; i++) cin >> a[i];
    vector<int> f(n, INT_MAX), r(n, INT_MAX);
    f[0] = r[n-1] = 0;

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < i; j++) {
            if (abs(j-i) > d) continue;
            f[i] = min(f[i], a[i] ? f[j] : f[j] + 1);
        }
    }

    for (int i = n-1; i >= 0; i--) {
        for (int j = i+1; j < n; j++) {
            if (abs(j-i) > d) continue;
            r[i] = min(r[i], a[i] ? r[j] : r[j] + 1);
        }
    }

    int x = INT_MAX; for (int i = 0; i < n; i++) x = min(x, a[i] ? f[i] + r[i] : f[i] + r[i] - 1);
    cout << x << "\n";
    return 0;
}

• Subtask 1: 56 / 80