제출 #1333570

#제출 시각아이디문제언어결과실행 시간메모리
1333570yhkhooStove (JOI18_stove)C++17
100 / 100
14 ms2372 KiB
#include <bits/stdc++.h>
using namespace std;

#define int long long

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n, k;
    cin >> n >> k;
    vector<int> t(n), dt;
    for(int i=0; i<n; i++){
        cin >> t[i];
    }
    for(int i=1; i<n; i++){
        dt.push_back(t[i] - t[i-1] - 1);
    }
    sort(dt.rbegin(), dt.rend());
    int ans = t[n-1] - t[0] + 1;
    for(int i=0; i<k-1; i++){
        ans -= dt[i];
    }
    cout << ans;
    return 0;
}
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