Submission #1086007

#	Time	Username	Problem	Language	Result	Execution time	Memory
1086007		Wendidiask	Stove (JOI18_stove)	C++14	100 / 100	35 ms	3332 KiB

stove

/*
                                     :---:--:--::::::--:-:----:                                     
                               ::-:::.                         ::-:::                               
                       .*  -===..                                    :---                           
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 */
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define debug(x) cerr << #x << " is " << x << "\n"
#define hehe ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define rep(i, a, b) for (int i = a; i <= b; i++)
#define repb(i, a, b) for (int i = b; i >= a; i--)
#define pii pair<int, int>
#define linebreak cout << "---------------------------------------------------------\n"
#define f first
#define s second
#define pb push_back
// good luck
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
const int MS = 2e5+5, mod = 1e9+7;
int n, k, a[MS];
int32_t main() {
	cin >> n >> k;
	for (int i = 1; i <= n; i++) cin >> a[i];
	int ans = a[n]-a[1]+1;
	vector<int> diff;
	for (int i = 1; i < n; i++) diff.pb(a[i+1]-a[i]-1);
	sort(diff.begin(), diff.end());
	reverse(diff.begin(), diff.end());
	for (int i = 0; i < k-1; i++) ans -= diff[i];
	cout << ans;
}

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