Submission #1260505

#	Time	Username	Problem	Language	Result	Execution time	Memory
1260505		wedonttalkanymore	Telefoni (COCI17_telefoni)	C++20	80 / 80	62 ms	4936 KiB

telefoni

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#define int long long
#define pii pair<ll, ll>
#define fi first
#define se second

const ll N = 3e5 + 5, inf = 1e18, mod = 1e9 + 7, block = 320, lim = 16;

int n, d;
int a[N], dp[N];

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    if (fopen(".inp", "r")) {
        freopen(".inp", "r", stdin);
        freopen(".out", "w", stdout);
    }
    cin >> n >> d;
    for (int i = 1; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= n; i++) dp[i] = inf;
    dp[0] = 0;
    for (int i = 1; i <= n; i++) {
        for (int j = max(0LL, i - d); j < i; j++) {
            dp[i] = min(dp[i], dp[j] + (a[i] == 0));
        }
    }
    cout << dp[n];
    return 0;
}

Compilation message (stderr)

telefoni.cpp: In function 'int main()':
telefoni.cpp:19:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |         freopen(".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~
telefoni.cpp:20:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         freopen(".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 80 / 80