Submission #1241944

#	Time	Username	Problem	Language	Result	Execution time	Memory
1241944		i_lov_aris	Stove (JOI18_stove)	C++20	100 / 100	12 ms	1892 KiB

stove

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int MAXN = 100000;

int n, k;
int a[MAXN + 5];
int d[MAXN + 5];
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> k;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
    }
    int total = a[n] + 1 - a[1];
    for(int i = 1; i < n; i++){
        d[i] = a[i + 1] - a[i] - 1;
    }
    sort(d + 1, d + n, greater<int>());
    int s = 0;
    for(int i = 1; i <= k - 1; i++){
        s += d[i];
    }
    cout << total - s;
    return 0;
}

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