Submission #805964

#	Time	Username	Problem	Language	Result	Execution time	Memory
805964		luci	Stove (JOI18_stove)	C++17	100 / 100	16 ms	3224 KiB

stove

#include<bits/stdc++.h>
using namespace std;
#define ioss ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define int long long
#define tup tuple<int, int, int>
#define pii pair<int, int>
#define fi first
#define se second
#define pub push_back
#define pob pop_back
int n, k;
signed main() {
    ioss;
    cin >> n >> k;
    int t[n+2] = {};
    vector<int> diff;
    for(int i = 1; i <= n; i++) cin >> t[i];
    int ans = t[n]-t[1];
    for(int i = 2; i <= n; i++) diff.pub(t[i]-t[i-1]);
    sort(diff.rbegin(), diff.rend());
    for(int i = 0; i < k-1; i++) ans -= diff[i];
    ans += k;
    cout << ans << endl;
}

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