Submission #587631

#	Time	Username	Problem	Language	Result	Execution time	Memory
587631		shrimb	Stove (JOI18_stove)	C++17	0 / 100	0 ms	212 KiB

stove

#pragma GCC optimize ("Ofast")
#pragma GCC target ("avx,avx2,fma")

#include"bits/stdc++.h"
using namespace std;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<class x>
using ordered_set = tree<x, null_type,less<x>, rb_tree_tag,tree_order_statistics_node_update>;

#define int long long
#define endl '\n'
#define mod 1000000007
//\
#define mod 1686876991

// joi 2018 not aliens trick :(

int n, k;

int a[100001];

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

    cin >> n >> k;
    for (int i = 0 ; i < n ; i++) cin >> a[i];

    int l = 0, r = 1000000000;
    while (r - l > 1) {
        int m = (l + r) / 2;
        int prev = -1000000000;
        int cnt = 0, tot = 0;
        for (int i = 0 ; i < n ; i++) {
            if (tot + (a[i] + 1) - prev > m) {
                cnt++;
                tot = 1;
                prev = a[i];
            } else {
                tot += (a[i] + 1) - prev;
            }
        }
        if (cnt <= k) r = m;
        else l = m;
    }
    cout << r << endl;
}

Compilation message (stderr)

stove.cpp:17:1: warning: multi-line comment [-Wcomment]
   17 | //\
      | ^

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50