Submission #1000580

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1000580	2024-06-17 20:52:36	PurpleCrayon	Fish 3 (JOI24_fish3)	C++17	100 / 100	456 ms	118456 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
#define sz(v) int(v.size())
#define ar array
typedef long long ll;
const int N = 3e5+10, MOD = 1e9+7;
const ll INF = 1e18+10;
const int L = 19;
pair<int, ll> anc[N][L];
ll ceil_div(ll x, ll y) {
    return (x + y - 1) / y;
}
void solve() {
    int n; ll k; cin >> n >> k;
    vector<ll> a(n); for (auto& x : a) cin >> x;
    vector<ll> diff(n-1);
    for (int i = 0; i < n-1; i++) {
        if (a[i] <= a[i+1])
            diff[i] = max(0LL, (a[i+1] - a[i]) / k);
        else
            diff[i] = -ceil_div(a[i] - a[i+1], k);
    }
    vector<ll> ps_diff = diff;
    for (int i = 1; i < n-1; i++) {
        ps_diff[i] += ps_diff[i-1];
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 7 / 7
• Subtask 3: 28 / 28
• Subtask 4: 20 / 20
• Subtask 5: 36 / 36