#include<bits/stdc++.h> using namespace std; #define int ll #define ll long long const int mod = 1e9 + 7; main(){ int n , k;cin >> n >> k; vector<int> a(n + 1) , v; for(int i = 1;i <= n;i ++){ cin >> a[i]; } sort(a.begin() + 1 , a.end()); int s = a[n] - a[1]; for(int i = 2;i <= n;i ++){ v.push_back(a[i] - a[i - 1]); } sort(v.rbegin() , v.rend()); for(int i = 0;i < min((int)v.size() , k - 1);i ++){ s -= v[i]; } cout << (k == n ? n : s + k) << endl; }

stove.cpp:10:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   10 | main(){
      | ^~~~