Submission #921405

#	Time	Username	Problem	Language	Result	Execution time	Memory
921405		AverageAmogusEnjoyer	Stove (JOI18_stove)	C++17	100 / 100	14 ms	2204 KiB

stove

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
template<class T> bool cmin(T &i, T j) { return i > j ? i=j,true:false; }
template<class T> bool cmax(T &i, T j) { return i < j ? i=j,true:false; }
const int nax = 100100;
int a[nax],b[nax],n,k;
int main() {
    ios_base::sync_with_stdio(false); 
    cin.tie(nullptr);
    cin >> n >> k;
    for (int i=0;i<n;i++) {
        cin >> a[i];
    }
    for (int i=0;i<n-1;i++) {
        b[i] = a[i+1]-a[i]-1;
    }
    sort(b,b+n-1);
    reverse(b,b+n-1);
    int ans = a[n-1] - a[0] + 1;
    for (int i=0;i<k-1;i++) {
        ans -= b[i];
    }
    cout << ans << "\n";
}

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