백준 2212번 센서 C++

https://www.acmicpc.net/problem/2212

2212번: 센서

 

그리디

 

#include <iostream>
#include <string>
#include <vector>
#include <math.h>
#include <algorithm>
#include <utility>
#include <stack>
#include <queue>
#include <math.h>
#include <set>
#include <map>
#include <list>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <limits.h>

using namespace std;
using int64 = long long;

int n, k;
vector<int> v;
vector<int> dists;

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

    cin >> n >> k;
    v = vector<int>(n);
    for (int i = 0; i < n; i++) cin >> v[i];
    sort(v.begin(), v.end());
    for (int i = 1; i < n; i++) {
        int dist = v[i] - v[i - 1];
        dists.push_back(dist);
    }
    sort(dists.begin(), dists.end());
    int ans = 0;
    for (int i = 0; i < n - k; i++) {
        ans += dists[i];
    }
    cout << ans;
}