Submission #111915

#	Time	Username	Problem	Language	Result	Execution time	Memory
111915		dolphingarlic	Stove (JOI18_stove)	C++14	0 / 100	3 ms	384 KiB

stove

#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#define FOR(i, x, y) for(int i = x; i < y; i++)
typedef long long ll;
using namespace std;

ll diffs[100001];

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll n, k;
    cin >> n >> k;
    ll mx, mn, curr;
    cin >> mn;
    curr = mn;
    FOR(i, 0, n - 1) {
        cin >> mx;
        diffs[i] = mx - curr;
        curr = mx;
    }
    sort(diffs, diffs + n - 1, greater<ll>());
    ll ans = mx - mn;
    FOR(i, 0, k - 1) ans -= diffs[i];
    cout << ans + k << '\n';
    return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50