Submission #916482

#	Time	Username	Problem	Language	Result	Execution time	Memory
916482		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	47 ms	2944 KiB

stove

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define pob pop_back
#define pf push_front
#define pof pop_front
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ld long double
#define fastio ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define elif else if
#define x first
#define y second
ll n, k, t[100001], dist[100001], ans;

int main(){
    cin >> n >> k;
    for(int i=1; i<=n; i++){
        cin >> t[i];
    }
    for(int i=2; i<=n; i++){
        dist[i]=t[i]-t[i-1];
    }
    sort(dist+2, dist+n+1, greater<ll>());
    ans=t[n]-t[1]+1;
    for(int i=2; i<=n && k>1; i++, k--){
        ans-=dist[i]-1;
    }
    cout << ans << endl;
}

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