Submission #1277448

#	Time	Username	Problem	Language	Result	Execution time	Memory
1277448		nhavanvietcode	Stove (JOI18_stove)	C++20	100 / 100	15 ms	2368 KiB

stove

#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    
    int N, K;
    cin >> N >> K;
    vector<long long> T(N);
    for (int i = 0; i < N; i++) cin >> T[i];
    
    vector<long long> gaps;
    for (int i = 0; i + 1 < N; i++) {
        long long g = T[i + 1] - (T[i] + 1);
        gaps.push_back(g);
    }
    
    sort(gaps.rbegin(), gaps.rend()); // sort descending
    
    long long total = (T.back() + 1) - T.front();
    for (int i = 0; i < K - 1 && i < (int)gaps.size(); i++)
        total -= gaps[i];
    
    cout << total << "\n";
    return 0;
}

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