Submission #786763

#	Time	Username	Problem	Language	Result	Execution time	Memory
786763		winter0101	Stove (JOI18_stove)	C++14	100 / 100	20 ms	3408 KiB

stove

#include<bits/stdc++.h>
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
#define pil pair<int,long long>
long long a[100009];
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("temp.INP","r",stdin);
    //freopen("temp.OUT","w",stdout);
    int n,k;
    cin>>n>>k;
    priority_queue<long long>t;
    for1(i,1,n)cin>>a[i];
    k--;
    for1(i,2,n){
    t.push(a[i]-a[i-1]-1);
    }
    long long sum=a[n]+1-a[1];
    while (k--&&!t.empty()){
        sum-=t.top();
        t.pop();
    }
    cout<<sum;
}

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