Submission #1196043

#	Time	Username	Problem	Language	Result	Execution time	Memory
1196043		al95ireyiz	Stove (JOI18_stove)	C++20	100 / 100	13 ms	1476 KiB

stove

//*** Bismillah ***//
#pragma GCC optimize("O3")
#pragma GCC optimize("fast-math")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("no-stack-protector")
#include <bits/stdc++.h>
using namespace std;
#if !defined(ONLINE_JUDGE) and !defined(EVAL)
#include "template/debug.h"
#else
#define d(x...)
#endif
#define fr first
#define sc second
#define in insert
#define ll long long
#define pb push_back
#define vll vector<ll>
#define pll pair<ll,ll>
#define vvll vector<vll>
#define vpll vector<pll>
#define len(x)(ll)x.size()
#define all(x)x.begin(),x.end()
const ll INF = 1e9;
const ll INFL = 1e18;
const ll MOD = 1e9+7;
// const ll MOD = 998244353;
const ll maxn = 2e5+5;
ll n,m,k=0;
void _(ll tt){
    cin>>n>>m;
    vll v;
    ll x, bf;
    for(ll i = 1; i <= n; i ++){
        cin>>x;
        if(i > 1){
            v.pb(x - bf);
        }
        bf = x;
    }
    sort(all(v));
    ll cv = n;
    for(ll i = 0; i <= len(v) - m; i ++){
        cv += v[i] - 1;
    }
    cout<<cv<<'\n';
}
signed main(){
    ll tm=clock();
    cin.tie(0)->sync_with_stdio(0);
    ll t=1;
    // cin>>t;
    for(ll tt=1;tt<=t;tt++){
            _(tt);
    }
    cerr<<"\n\033[1;31mTime: \033[1;30m" \
        <<(double)(clock()-tm)/1000000<<"\033[1;32m seconds\n";
}

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