Submission #1127563

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127563		Haciyev12	Stove (JOI18_stove)	C++20	100 / 100	16 ms	2244 KiB

stove

#include "bits/stdc++.h"
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define ll long long
#define pb push_back
#define in insert
#define F first
#define S second
#define vll vector<ll>
#define all(v) v.begin(),v.end()
#define endl '\n'
#define pii pair<ll,ll>
#define yes cout << "YES" << endl;
#define no cout << "NO" << endl;
using namespace std;
const ll INF = 1e18, mod = 1e9 + 7, N = 2e5 + 5;
ll gcd(ll a, ll b){
 if(b == 0){
 return a;
 }
 return gcd(b, a%b);
}
ll lcm(ll a, ll b){
    return (a / gcd(a,b)) * b;
}
void solve(){
    ll n,m;
    cin >> n >> m;
    m--;
    ll a[n];
    for(int i = 0; i < n;i ++){
        cin >> a[i];
    }
    ll sum = 0;
    vector<ll>v;
    for(int i = 0; i < n - 1; i++){
        v.pb(a[i + 1] - a[i] - 1);
        sum += a[i + 1] - a[i] - 1;
    }
    sort(all(v));
    reverse(all(v));    
    for(int i = 0; i < m; i++){
        sum -= v[i];
    }
    cout << sum + n << endl;
}
int main() {
    fast;
    ll t = 1;
   // cin >> t;
    while(t--){
        solve();
    }
    return 0;
}

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