Submission #1197988

#	Time	Username	Problem	Language	Result	Execution time	Memory
1197988		ffeyyaae_	Stove (JOI18_stove)	C++20	100 / 100	16 ms	1224 KiB

stove

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

const int N = 1e5+5;

int n, k;
int keep[N];

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n >> k;
    priority_queue<int> pq;
    int pre = 0;
    for( int i=0;i<n;i++ )
    {
        cin >> keep[i];
        if(i>0) pq.push( keep[i]-pre );
        pre = keep[i];
    } 
    int ans = keep[n-1]-keep[0]+1;
    for( int i=2;i<=k;i++ )
    {
        int temp = pq.top();
        pq.pop();
        ans -= temp-1;
    }
    cout << ans;
    return 0;
}

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