Submission #1208943

#	Time	Username	Problem	Language	Result	Execution time	Memory
1208943		islam_2010	Stove (JOI18_stove)	C++20	100 / 100	12 ms	1096 KiB

stove

#pragma GCC optimize("O3")
#pragma GCC target("avx2,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
#define all(x) x.begin(), x.end()
using namespace std;

const int sz = 2e5+5;

int pref[sz];

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    int n, m;
    cin >> n >> m;
    vector<int> a(n);
    vector<int> b(n);
    for(int i = 0; i < n; i++){
        cin >> a[i];
    }for(int i = 0; i < n-1; i++){
        b[i] = a[i+1]-a[i];
    }sort(b.begin(), b.end());
    int ans = m;
    for(int i = 0; i <= n-m; i++){
        ans += b[i];
    }cout << ans;
    
}

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