Submission #659442

#	Time	Username	Problem	Language	Result	Execution time	Memory
659442		raysh07	Stove (JOI18_stove)	C++14	100 / 100	24 ms	2840 KiB

stove

#include <bits/stdc++.h>
using namespace std;
#define int long long

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

void Solve() 
{
    int n, k;
    cin>>n>>k;
    
    int canskip = k - 1;
    int t[n];
    for (int i=0; i<n; i++)
    cin>>t[i];
    
    int d[n-1];
    sort(t, t+n);
    for (int i=0; i<n-1; i++)
    {
        d[i] = t[i+1] - t[i] - 1;
    }
    sort(d, d+n-1, greater<int>());
    
    int val = t[n-1] - t[0] + 1;
    for (int i=0; i<canskip; i++)
    {
        val -=  d[i];
    }
    cout<<val;
}

int32_t main() 
{
    auto begin = std::chrono::high_resolution_clock::now();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t = 1;
    //cin >> t;
    for(int i = 1; i <= t; i++) 
    {
        //cout << "Case #" << i << ": ";
        Solve();
    }
    auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
    return 0;
}

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