Submission #972352

#	Time	Username	Problem	Language	Result	Execution time	Memory
972352		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	15 ms	2700 KiB

stove

#include <time.h>
#include <cstdlib>
#include <stack>
#include <numeric>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <map>
#include <set>
#include <iterator>
#include <deque>
#include <queue>
#include <sstream>
#include <array>
#include <string>
#include <tuple>
#include <chrono>
#include <cassert>
#include <cstdio>
#include <cstring>
#include <list>
#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <bitset>
#define ll long long
using namespace std;

int tt = 1, n, k;
ll a[100005], sum;
vector<int> v;
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    cin >> n >> k;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        if(i > 1) v.push_back(a[i] - a[i - 1]);
    }
    sum = a[n] - a[1] + 1;
    sort(v.begin(), v.end());
    while(k > 1){
        k--;
        sum = sum - v.back() + 1;
        v.pop_back();
    }
    cout << sum;
}

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