Submission #541670

#	Time	Username	Problem	Language	Result	Execution time	Memory
541670		pokmui9909	Stove (JOI18_stove)	C++17	100 / 100	25 ms	2976 KiB

stove

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

ll N, K;
ll A[100005];

int main(){
    cin.tie(0) -> sync_with_stdio(false);

    cin >> N >> K;
    vector<ll> V;
    for(int i = 1; i <= N; i++){
        cin >> A[i];
        if(i > 1) V.push_back(A[i] - A[i - 1] - 1);
    }
    sort(V.begin(), V.end());
    ll ans = 0;
    for(int i = 0; i < N - K; i++){
        ans += V[i];
    }
    cout << ans + N;
}

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