Submission #707670

#	Time	Username	Problem	Language	Result	Execution time	Memory
707670		Urvuk3	Stove (JOI18_stove)	C++17	100 / 100	24 ms	2264 KiB

stove

#include <bits/stdc++.h>

using namespace std;

#define EPS 1e-9
#define ll long long
const int INF=1e9,mxN=5001;
const ll LINF=1e18,MOD=1e9+7;
#define fi first
#define se second
#define pii pair<int,int>
#define pll pair<long long,long long>
#define mid ((l+r)/2)
#define sz(a) (int((a).size()))
#define all(a) a.begin(),a.end()
#define endl "\n"
#define PRINT(x) cerr<<#x<<'='<<x<<endl;
#define pb push_back
#define PRINTvec(niz) { cerr<<#niz<<"="; for(auto _i:niz) cerr<<_i<<" "; cerr<<endl; }
#define PRINTpair(x) cerr<<#x<<"={"<<x.fi<<","<<x.se<<"}"<<endl;

void Solve(){
    int N,K; cin>>N>>K;
    vector<int> a(N+1);
    for(int i=1;i<=N;i++) cin>>a[i];
    sort(a.begin()+1,a.end());
    int res=N,off=N;
    vector<int> b;
    for(int i=2;i<=N;i++){
        b.pb(a[i]-a[i-1]-1);
    }
    sort(all(b));
    for(int i=0;off>K;i++){
        res+=b[i];
        off--;
    }
    cout<<res<<endl;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t; t=1;
    //cin>>t;
    while(t--){
        Solve();
    }
    return 0;
}

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