Submission #997287

#	Time	Username	Problem	Language	Result	Execution time	Memory
997287		Icelast	Stove (JOI18_stove)	C++17	100 / 100	16 ms	3544 KiB

stove

#include <iostream>
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll maxn = 2*1e5+5, INF = 4e18+9;
void solve(){
    ll n, k;
    cin >> n >> k;
    vector<ll> a(n+1), b;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
    }
    ll ans = a[n]-a[1]+1;
    for(int i = 2; i <= n; i++){
        b.push_back(a[i]-a[i-1]-1);
    }
    k--;
    sort(b.begin(), b.end(), greater<ll>());
    for(int i = 0; i < k; i++){
        ans -= b[i];
    }
    cout << ans;
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
}

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