Submission #1310754

#	Time	Username	Problem	Language	Result	Execution time	Memory
1310754		somefolk	Stove (JOI18_stove)	C++20	100 / 100	14 ms	2368 KiB

stove

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

#define int long long

void solve(){
    int n, k;
    cin >> n >> k;
    vector<int> a(n);
    for(int i = 0; i < n; i++) cin >> a[i];

    vector<int> diff;
    for(int i = 1; i < n; i++){
        diff.push_back(a[i]-a[i-1]-1);
    }
    sort(diff.rbegin(), diff.rend());

    int total = a[n-1] - a[0] + 1;
    for(int i = 0; i < k-1; i++){
        total -= diff[i];
    }

    cout << total << endl;
}

int32_t main(){
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    int t = 1;
    // cin >> t;
    while(t--) solve();
    return 0;
}

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