Submission #1691801

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Source Code Expand

#define _CRT_SECURE_NO_WARNINGS

#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <fstream>
#include <set>
#include <utility>
#include <algorithm>
#include <queue>
#define rep(i,p,n) for(int i=(int)p;i<(int)n;i++)
#define rrep(i,p,n) for(int i=(int)p;i>=(int)n;i--)
#define sort(x) sort(x.begin(),x.end());
#define ll long long 
#define vi vector<int>
#define vvi vector<vector<int> >

using namespace std;

void p(int x) {
	cout << x << endl;
}

void pp(string s) {
	cout << s << endl;
}

int main() {
	int n, m;
	cin >> n >> m;
	vi v(n);
	rep(i, 0, n) cin >> v[i];

	sort(v);

	int sum = 0;
	int k = 0;
	rep(i, 0, m) {
		sum += v[i] + i;
	}
	cout << sum << endl;

	return 0;
}

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