Submission #127291

#	Time	Username	Problem	Language	Result	Execution time	Memory
127291		newbee	Stove (JOI18_stove)	C++17	100 / 100	30 ms	3584 KiB

stove

#include <iostream>
#include <stdio.h>
#include <vector>
#include <algorithm>

#define int long long
const int MAX = 1e5 + 15;

int aGuest;
int aMatch;
std::vector<int> Time;
std::vector<int> diff;

signed main() {
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(NULL);
  std::cout.tie(NULL);

  std::cin >> aGuest >> aMatch;
  for (int i = 0; i < aGuest; ++i) {
    int inp;
    std::cin >> inp;
    Time.push_back(inp);
  }

  for (int i = 1; i < aGuest; ++i) {
    diff.push_back(Time[i] - Time[i - 1]);
  }

  std::sort(diff.begin(), diff.end());
  int ans = 0;

  for (int i = 0; i < aGuest - aMatch; ++i) {
    ans += diff[i];
  }

  std::cout << ans + aMatch;
}

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