Submission #1353973

#	Time	Username	Problem	Language	Result	Execution time	Memory
1353973		nxk02102010	Stove (JOI18_stove)	C++20	100 / 100	11 ms	1860 KiB

stove

#include<bits/stdc++.h>
using namespace std;
/*
JOI stove
Idea:

*/
int main(){
        ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
        int n,k;cin >> n >> k;
        vector<long long> a(n + 1);
        vector<long long> prefix(n + 1);
        for(int i = 1;i <= n;i++){
                cin >> a[i];
        }
        int ans = a[n] + 1 - a[1];
        for(int i = 1;i <= n - 1;i++){
                a[i] = a[i + 1] - 1 - a[i];
        }
        sort(a.begin() + 1,a.begin() + n,greater<int>());
        for(int i = 1;i <= k - 1;i++){
                ans -= a[i];
        }
        cout << ans << '\n';
}

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