Submission #229237

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
229237	2020-05-03 22:28:03	nickmet2004	Stove (JOI18_stove)	C++11	100 / 100	66 ms	7156 KiB

stove

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include<bits/stdc++.h>
#define f first
#define s second
using namespace std;
const int N = 2e5 + 500;
typedef pair<int , int> ipair;
int n , k;
int a[N];
vector<ipair> deltas;
set<int> s;
int main (){
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n >> k;
    for(int i = 0; i < n; ++i){
        cin >> a[i];
        if(i) deltas.emplace_back(a[i] - a[i - 1] , i - 1);
    }
    sort(deltas.begin() , deltas.end()); reverse(deltas.begin() , deltas.end());
    for(int i = 0; i < k - 1; ++i){
        s.insert(deltas[i].s);
        //cerr << deltas[i].s << " ";
    } //cerr << endl;
    long long sum = 0;
    int cur = 0;
    for(int x : s){
        //cerr << x << " x " << "cur " << cur << endl;
        sum += (a[x] + 1 - a[cur]);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

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