criyle/codenet-compile-errors huggingface dataset:
Language: C++

#include<iostream>
using namespace std;
int main(){
    int N, M;
    cin >> N >> M;
    int X[100010];
    int Y[100010];
    for(int i = 1;i <= M;i++){
        cin >> X[i];
    }
    sort(X+1, X+M+1);
    for(int i = 1;i < M;i++){
        Y[i] = X[i+1]-X[i];
    }
    sort(Y+1, Y+M+1);
    int ans = 0;
    for(int i = 1;i <= M - N + 1;i++){
        ans += Y[i];
    }
    cout << ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   11 |     sort(X+1, X+M+1);
      |     ^~~~
      |     short
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>

int main()
{
    int N, M;
    std::cin >> N >> M;

//    if (N >= M) {
//        std::cout << 0 << std::endl;
//        return 0;
//    }

    std::vector<int> X(M);
    for (int i = 0; i < M; i++) {
        std::cin >> X[i];
    }

    std::sort(std::begin(X), std::end(X));

    std::vector<int> D(M);
    D[0] = 0;
    for (int i = 1; i < M; i++) {
        D[i] = X[i] - X[i-1];
    }

    std::sort(std::begin(D), std::end(D));

    int ans = 0;
    for (int i = 0; i < M-(N-1); i++) {
        ans += D[i].first;
    }


    std::cout << ans << std::endl;



    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:21: error: request for member 'first' in 'D.std::vector<int>::operator[](((std::vector<int>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'}
   32 |         ans += D[i].first;
      |                     ^~~~~
Language: C++

package contest;
import java.util.Arrays;
import java.util.Scanner;
public class Main{
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();
		int M=sc.nextInt();
		if(N>=M) {
			System.out.println(0);
			System.exit(0);
		}
		int x[]=new int[M];

		for(int i=0;i<M;i++) {
			x[i]=sc.nextInt();
		}
		Arrays.sort(x);
		int l[]=new int[M-1];
		for(int i=0;i<M-1;i++) {
			l[i]=x[i+1]-x[i];
		}
		int length=x[M-1]-x[0];
		Arrays.sort(l);
		for(int i=0;i<N-1;i++) {
			length=length-l[M-2-i];
		}
		System.out.println(length);
	}
}

Compiler output:
a.cc:1:1: error: 'package' does not name a type
    1 | package contest;
      | ^~~~~~~
a.cc:2:1: error: 'import' does not name a type
    2 | import java.util.Arrays;
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:1: error: 'import' does not name a type
    3 | import java.util.Scanner;
      | ^~~~~~
a.cc:3:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:4:1: error: expected unqualified-id before 'public'
    4 | public class Main{
      | ^~~~~~
Language: C++

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve();
    }
    public void solve() {
        Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        int N = scan.nextInt();
        int M = scan.nextInt();
        int[] X = new int[M];
        for (int i = 0; i < M; i++) {
            X[i] = scan.nextInt();
        }
        Arrays.sort(X);
        if (M <= N) {
            System.out.println(0);
            return;
        }
        List<Integer> list = new ArrayList<>();
        for (int i = 0; i < M - 1; i++) {
            list.add(X[i+1]-X[i]);
        }
        list.sort(Comparator.reverseOrder());
        long answer = X[M-1] - X[0];
        long sum = 0;
        for (int i = 0; i < N - 1; i++) {
            sum += list.get(i);
        }
        System.out.println(answer - sum);
    }
}


Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.io.BufferedReader;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:2:1: error: 'import' does not name a type
    2 | import java.io.InputStreamReader;
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:1: error: 'import' does not name a type
    3 | import java.util.*;
      | ^~~~~~
a.cc:3:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:5:1: error: expected unqualified-id before 'public'
    5 | public class Main {
      | ^~~~~~
Language: C++

#include<bits/stdc++.h>
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;
ll gcd(ll a,ll b){return b!=0?gcd(b,a%b):a;}
ll lcm(ll a,ll b){return a*b/gcd(a,b);}

int main(){
    ll n,m,x,s=0;
    cin>>n>>m;
    vector<ll> x(m),d(m-1);
    for(ll i=0;i<m;i++) cin>>x[i];
    sort(all(x));
    for(ll i=0;i<m-1;i++) d[i]=x[i+1]-x[i];
    sort(all(d));
    for(ll i=0;i<m-n;i++) s+=d[i];
    cout<<s<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:16: error: conflicting declaration 'std::vector<long long int> x'
   11 |     vector<ll> x(m),d(m-1);
      |                ^
a.cc:9:12: note: previous declaration as 'll x'
    9 |     ll n,m,x,s=0;
      |            ^
a.cc:12:31: error: invalid types 'll {aka long long int}[ll {aka long long int}]' for array subscript
   12 |     for(ll i=0;i<m;i++) cin>>x[i];
      |                               ^
a.cc:2:20: error: request for member 'begin' in 'x', which is of non-class type 'll' {aka 'long long int'}
    2 | #define all(x) (x).begin(),(x).end()
      |                    ^~~~~
a.cc:13:10: note: in expansion of macro 'all'
   13 |     sort(all(x));
      |          ^~~
a.cc:2:32: error: request for member 'end' in 'x', which is of non-class type 'll' {aka 'long long int'}
    2 | #define all(x) (x).begin(),(x).end()
      |                                ^~~
a.cc:13:10: note: in expansion of macro 'all'
   13 |     sort(all(x));
      |          ^~~
a.cc:14:33: error: invalid types 'll {aka long long int}[ll {aka long long int}]' for array subscript
   14 |     for(ll i=0;i<m-1;i++) d[i]=x[i+1]-x[i];
      |                                 ^
a.cc:14:40: error: invalid types 'll {aka long long int}[ll {aka long long int}]' for array subscript
   14 |     for(ll i=0;i<m-1;i++) d[i]=x[i+1]-x[i];
      |                                        ^
Language: C++

N, M = map(int, input().split())
X = sorted([int(x) for x in input().split()])

#print(X)

if N >= M:
    print(0)
    exit()

diff = []
for i, x in enumerate(X):
    if i == 0:
        diff.append((0, 0))
        continue
    diff.append((i, X[i] - X[i - 1]))

#print(diff)

diff.sort(key=lambda x: x[1], reverse=True)

#print(diff)

indices = sorted([e[0] for e in diff[:N-1]])
start = 0
step = 0

#print(indices)

for end in indices:
    step += X[end - 1] - X[start]
    start = end
step += X[-1] - X[start]
print(step)


Compiler output:
a.cc:4:2: error: invalid preprocessing directive #print
    4 | #print(X)
      |  ^~~~~
a.cc:17:2: error: invalid preprocessing directive #print
   17 | #print(diff)
      |  ^~~~~
a.cc:21:2: error: invalid preprocessing directive #print
   21 | #print(diff)
      |  ^~~~~
a.cc:27:2: error: invalid preprocessing directive #print
   27 | #print(indices)
      |  ^~~~~
a.cc:1:1: error: 'N' does not name a type
    1 | N, M = map(int, input().split())
      | ^
Language: C++

#include<iostream>

using namespace std;

int main() {
    int n, m; cin >> n >> m;
    int sum = 0;
    int x[m]; for (int i = 0; i < m; ++i) cin >> x[i];
    sort(x, x + m);
    //m - 1個の区間を選ばなくていい
    for (int i = 0; i < m - 1; ++i) x[i] = x[i + 1] - x[i];
    x[m - 1] = 0;
    for (int i = 0; i < m; ++i) sum += x[i];
    sort(x, x + m, greater<int>());
    int notchoose = 0;
    for (int i = 0; i < n - 1; ++i) notchoose += x[i];
    cout << sum - notchoose << endl;
    
    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: 'sort' was not declared in this scope; did you mean 'short'?
    9 |     sort(x, x + m);
      |     ^~~~
      |     short
Language: C++

#pragma GCC optimize "-O3"
#pragma GCC target ("avx")
#define _USE_MATH_DEFINES
#include<bits/stdc++.h>
#define int long long
#define rep(i,n) for(int i=0;i<n;++i)
#define vi vector<int>
#define vvi vector<vi>
#define pb push_back
#define pi pair<int,int>
#define vp vector<pair<int,int>>
#define mp make_pair
#define all(v) (v).begin(),(v).end()
#define fi first
#define se second
#define inf (1ll<<60)
#define SORT(v) sort(all(v))
#define RSORT(v) sort(all(v),greater<int>())
signed gcd(int a, int b){return b?gcd(b,a%b):a;}
signed lcm(int a,int b){return a*b/gcd(a,b);}

using namespace std;

const int mod=1e9+7;

void run();

void init() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout<<fixed<<setprecision(12);
}

signed main(){
    init();
    run();
    return 0;
}

void run(){
    int n,m;
    cin >> n >> m;
    vi x(m);
    rep(i,m)cin >> x[i];
    RSORT(x);
    int ans=x[0]-x[m-1];
    vi sa(m-1);
    rep(i,m-1)
    {
        sa[i]=x[i]-x[i+1];
    }
    RSORT(sa);
    int sum_sa=0;
    rep(i,n-1)
    {
        sum_sa+=sa[i]
    }
    cout << ans - sum_sa << endl;
}

Compiler output:
a.cc: In function 'void run()':
a.cc:56:22: error: expected ';' before '}' token
   56 |         sum_sa+=sa[i]
      |                      ^
      |                      ;
   57 |     }
      |     ~
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
 
 
int main(){
  int n, m;
  cin >> n >> m;
  vector<ll>a(m);
  vector<ll>b(m);
  if(n>=m){cout << 0 << endl;}
  else if(n<m){
    for(int i=0; i<m; ++i){
       cin >> a[i];
      
    }
    sort(a.begin(), a.end());
  
  for(int i=0; i<m; ++i){
    b[i]=abs(a[i+1]-a[i]);
   
  }
  sort(b.begin(), b.end());
  ll sum=0;
  for(int i=0; i<m-n; ++i)
  { sum += b[i];}
    cout << sum << endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:2: error: expected '}' at end of input
   29 | }
      |  ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
 
 
int main(){
  int n, m;
  cin >> n >> m;
  vector<ll>a(m);
  vector<ll>b(m);
  if(n>=m){cout << 0 << endl;}
  else if(n<m){
    for(int i=0; i<m; ++i){
       cin >> a[i];
      
    }
    sort(a.begin(), a.end());
  
  for(int i=0; i<m; ++i){
    b[i]=abs(a[i+1]-a[i]);
   
  }
  sort(b.begin(), b.end());
  ll sum=0;
  for(int i=0; i<m-n; ++i)
  { sum += b[i];}
    cout << sum << endl;
  
  }

Compiler output:
a.cc: In function 'int main()':
a.cc:29:4: error: expected '}' at end of input
   29 |   }
      |    ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>

int main(){
  int N, M;
  std::cin >> N >> M;
  std::vector<int> X(M);
  std::copy_n(std::istream_iterator<int>(std::cin), M , X.begin());
  if(M <= N) std::cout<< 0 << std::endl;
  std::vector<int> dif;
  std::sort(X.begin(),X.end());
  if(N == 1) std::cout<< (*X.end()) - *(X.begin())<<std::endl;
  
  for(int i = 0 ; i < (int)X.size() -1 ; i++ ){
    dif.push_back(X[i+1] - X[i]);
  }
  std::sort(dif.rbegin(),dif.rend());
  long long result = std::accumulate(dif.begin() + N -1 , dif.end(), 0);
  std::cout<<result << std::endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:27: error: 'accumulate' is not a member of 'std'
   20 |   long long result = std::accumulate(dif.begin() + N -1 , dif.end(), 0);
      |                           ^~~~~~~~~~
Language: Java

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int N = scanner.nextInt();
        int M = scanner.nextInt();

        ArrayList<Integer> cordinates = new ArrayList<>();


        if(M==1){
            System.out.println(0);
            return;
        }

        for(int i=0; i<M; i++){
            int tmp = scanner.nextInt();
            cordinates.add(tmp);
        }

        Collections.sort(cordinates);

        ArrayList<Integer> distances = new ArrayList<>();

        long acc = 0;

        for(int i=0; i<cordinates.size()-1; i++){
            int diff = cordinates.get(i+1) - cordinates.get(i);
            acc += diff;
            distances.add(diff);
        }

        Collections.sort(distances, Collections.reverseOrder());

        for(int i=0; i < Math.min(N-1, M); i++){
            acc -= distances.get(i);
        }

        System.out.println(acc);



    }
}


Compiler output:
Main.java:3: error: cannot find symbol
        Scanner scanner = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:3: error: cannot find symbol
        Scanner scanner = new Scanner(System.in);
                              ^
  symbol:   class Scanner
  location: class Main
Main.java:8: error: cannot find symbol
        ArrayList<Integer> cordinates = new ArrayList<>();
        ^
  symbol:   class ArrayList
  location: class Main
Main.java:8: error: cannot find symbol
        ArrayList<Integer> cordinates = new ArrayList<>();
                                            ^
  symbol:   class ArrayList
  location: class Main
Main.java:21: error: cannot find symbol
        Collections.sort(cordinates);
        ^
  symbol:   variable Collections
  location: class Main
Main.java:23: error: cannot find symbol
        ArrayList<Integer> distances = new ArrayList<>();
        ^
  symbol:   class ArrayList
  location: class Main
Main.java:23: error: cannot find symbol
        ArrayList<Integer> distances = new ArrayList<>();
                                           ^
  symbol:   class ArrayList
  location: class Main
Main.java:33: error: cannot find symbol
        Collections.sort(distances, Collections.reverseOrder());
        ^
  symbol:   variable Collections
  location: class Main
Main.java:33: error: cannot find symbol
        Collections.sort(distances, Collections.reverseOrder());
                                    ^
  symbol:   variable Collections
  location: class Main
9 errors
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
 int i,n,m,ans;
 cin>>n>>m;
 if(n>=m){cout <<0;return 0;}
 vector<int> x(m),sa(m,0);
 for(i=0;i<m;i++)cin>>x[i];
 sort(x.begin(),x.end());
 
 for(i=1;i<m;i++)sa[i]=x[i]-x[i-1];
 sort(sa.begin(),sa.end());
 ans=x[m-1]-x[0];
 for(i=1,i<=m-n;i++)ans-=sa[i];
 cout <<ans;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:20: error: expected ';' before ')' token
   14 |  for(i=1,i<=m-n;i++)ans-=sa[i];
      |                    ^
      |                    ;
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#define rep(i,n) for(int i=0;i<n;++i)
using namespace std;

int main() {
	int n, m; cin >> n >> m;
	vector<int> x(m);
	rep(i, m) cin >> x[i];
	sort(x.begin(), x.end());

	vector<int> d(m);
	for (int i = 1; i < m; ++i) {
		d[i] = x[i] - x[i - 1];
	}
	sort(d.begin(), d.end(), greater<int>());
	rep(i, n - 1) {
		d[i] = 0;
	}
	int ans;
	for(i = n; i < m; ++i) {
		ans += d[i];
	}
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:22:13: error: 'i' was not declared in this scope
   22 |         for(i = n; i < m; ++i) {
      |             ^
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#define rep(i,n) for(int i=0;i<n;++i)
using namespace std;

int main() {
	int n, m; cin >> n >> m;
	vector<int> x(m);
	rep(i, m) cin >> x[i];
	sort(x.begin(), x.end());

	vector<int> d(m);
	for (int i = 1; i < m; ++i) {
		d[i] = x[i] - x[i - 1];
	}
	sort(d.begin(), d.end(), greater<int>());
	rep(i, n - 1) {
		d[i] = 0;
	}
	int ans;
	rep(i = n; i < m; ++i) {
		ans += d[i];
	}
	return 0;
}


Compiler output:
a.cc:22:30: error: macro "rep" requires 2 arguments, but only 1 given
   22 |         rep(i = n; i < m; ++i) {
      |                              ^
a.cc:4:9: note: macro "rep" defined here
    4 | #define rep(i,n) for(int i=0;i<n;++i)
      |         ^~~
a.cc: In function 'int main()':
a.cc:22:9: error: 'rep' was not declared in this scope
   22 |         rep(i = n; i < m; ++i) {
      |         ^~~
Language: C++

macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        let mut next = || { iter.next().unwrap() };
        input_inner!{next, $($r)*}
    };
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes
                .by_ref()
                .map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}

macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr, ) => {};

    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
    ($next:expr, mut $var:ident : $t:tt $($r:tt)*) => {
        let mut $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}

macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => {
        ( $(read_value!($next, $t)),* )
    };

    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };

    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };

    ($next:expr, usize1) => {
        read_value!($next, usize) - 1
    };

    ($next:expr, $t:ty) => {
        $next().parse::<$t>().expect("Parse error")
    };
}
use std::collections::HashMap;
use std::cmp::{max,min};
fn main(){
    input!{
        n:usize,
        m:usize,
        mut xm:[i64;m],  
    }
    xm.sort();
    if n >= m {
        println!("0");
        return;
    }
    let mut diff:Vec<_> = xm.windows(2).map(|x|x[1] - x[0]).collect();
    diff.sort();
    let ans = if n - 1 > diff.len() {
        0
    } else {
        diff.iter().skip(n-1).sum::<i64>()
    };
    println!("{}",ans);
}

Compiler output:
a.cc:42:10: error: too many decimal points in number
   42 |         (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
      |          ^~~~~~~
a.cc:1:1: error: 'macro_rules' does not name a type
    1 | macro_rules! input {
      | ^~~~~~~~~~~
a.cc:22:1: error: 'macro_rules' does not name a type
   22 | macro_rules! input_inner {
      | ^~~~~~~~~~~
a.cc:36:1: error: 'macro_rules' does not name a type
   36 | macro_rules! read_value {
      | ^~~~~~~~~~~
a.cc:57:1: error: 'use' does not name a type
   57 | use std::collections::HashMap;
      | ^~~
a.cc:58:1: error: 'use' does not name a type
   58 | use std::cmp::{max,min};
      | ^~~
a.cc:59:1: error: 'fn' does not name a type
   59 | fn main(){
      | ^~
Language: C++

#include <cstdio>
#include <algorithm>
using namespace std;
int main() {
  int N, M;
  scanf("%d %d", &N, &M);
  int X[M];
  for (int i=0; i<M; i++) {
    scanf("%d", &X[i]);
  }
  if (M <= N) {
    printf("0\n");
    return 0;
  }

  sort(X, X+M);
  int diff[M-1];
  for (int i=0; i<M-1; i++) {
    diff[i] = X[i+1] - X[i];
  }
  sort(diff, diff+(M-1));
  int ans = accumulate(diff, diff+(M - N), 0);
  printf("%d\n", ans);

}


Compiler output:
a.cc: In function 'int main()':
a.cc:22:13: error: 'accumulate' was not declared in this scope
   22 |   int ans = accumulate(diff, diff+(M - N), 0);
      |             ^~~~~~~~~~
Language: C++

#include<bits/stdc++.h>
#define REP(i,n) for(int (i)=0 ;(i)<(n);(i)++)
#define REPR(i,n) for(int (i)=(n);(i)>=0;(i)--)
#define FOR(i,m,n) for(int (i)=(m);(i)<(n);(i)++)
#define ALL(x) x.begin(),x.end()
#define REVERSE(x) reverse(x.begin(),x.end())
#define SORT(x,n) sort(x,x)
#define P pair<int,int>
typedef long long LL;
const int INF=1000000007;
using namespace std;
int main(){
  int N,M;
  cin>>N>>M;
  int a[M];
  REP(i,M){
    cin>>a[i];
  }
  sort(a,a+M);
  int dis[M-1];
  REP(i,M-1){
  dis[i]=a[i+1]-a[i];
  }
  sort(dis,dis+M-1);
  reverse(dis,dis+M-1);
  int ans=0;
  if(N>=M){
    cout<<ans;
  }
  else{
  
  REP(i,N-1){
    ans+=dis[i];
  }
  cout<<a[M-1]-a[0]-ans;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:36:2: error: expected '}' at end of input
   36 | }
      |  ^
a.cc:12:11: note: to match this '{'
   12 | int main(){
      |           ^
Language: C++

#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;

int main(){
    int N,M;
    cin >> N >> M;

    vector<int> X(M,0);
    for(int i=0; i < M; i++){
        cin >> X[i];
    }

    if(N>=M){
        cout << 0 << endl;
        return 0;
    }

    sort(X.begin(),X.end());

    vector<int> diff(M-1,0);
    for(int i=0; i<(M-1); i++)
        diff[i] = X[i+1] - X[i];
    
    sort(diff.begin(),diff.end(),greater<int>());
    for(int i=0; i<(N-1); i++){
        diff[i] = 0;
    }

    int sum = accumulate(diff.begin(),diff.end(),0);
    cout << sum << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:15: error: 'accumulate' was not declared in this scope
   31 |     int sum = accumulate(diff.begin(),diff.end(),0);
      |               ^~~~~~~~~~
Language: C++

#include <iostream>
#include <vector>
#include <set>
 #include <iomanip>
using namespace std;


int main(){
	int N,M;
	cin >> N>> M;
	vector<int>X(M,0);
	for(int i=0;i<M;i++)cin >> X[i];
	
	sort(X.begin(),X.end());

	vector<int>sa(M-1);
	for(int i=0;i<M-1;i++)sa[i]=X[i+1]-X[i];
	int ans=0;
	
	sort(sa.begin(),sa.end());
	for(int i=0;i<M-N;i++)ans+=sa[i];
	
	cout << ans <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   14 |         sort(X.begin(),X.end());
      |         ^~~~
      |         short
Language: Java

import java.util.Arrays;
import java.util.Scanner;

public class Main {


	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int M = sc.nextInt();

		int[] X = new int[M];
		for (int i = 0; i < M; i++) {
			X[i] = sc.nextInt();
		}
		Arrays.sort(X);

		int[] between = new int[M - 1];
		for (int i = 1; i < X.length; i++) {
			between[i - 1] = Math.abs(X[i - 1] - X[i]);
		}
		Arrays.sort(between);

		int ans = 0;
		for (int i = 0; i < (between.length - N + 1); i++) {
			ans += between[i];
		}

		System.out.println(ans);
	}

Compiler output:
Main.java:31: error: reached end of file while parsing
	}
	 ^
1 error
Language: C++

#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
using namespace std;
const int INF = 1e9;
const int MAX = 100000;
const long long LINF = 1e18;



int main(){
  int N,M;
  cin >> N >> M;
  vector<int> X(M);
  for(int i = 0; i < M; i++){
    cin >> x[i];
  }
  sort(X.begin(),X.end());
  int L = X[M-1] - X[0];
  vector<int> l(M-1);
  for(int i = 0; i < M-1; i++){
    l[i] = X[i+1]-X[i];
  }
  sort(l.begin(),l.end(),greater<int>());
  int sum = 0;
  for(int i = 0; i < N-1; i++){
    sum += l[i];
  }
  int ans = L - sum;
  cout << ans << endl;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:17:12: error: 'x' was not declared in this scope
   17 |     cin >> x[i];
      |            ^
Language: C++

#include <iostream>
#include<algorithm>
#include<vector>
#include<string>
using namespace std;


int main() {
	long long int N,M;
	cin >> N>>M;
	if (N >= M) {
		cout << 0 << endl;
		return 0;
	}
	vector<long long int> X(M);
	for (auto& i : X)cin >> i;

	sort(X.begin(), X.end());

	vector<long long int> diffs;
	for (int i = 1; i <M; i++) {
		diffs.push_back(X[i] - X[i - 1]);
	}
	sort(diffs.begin(), diffs.end());

	long long int ans=0;

	for (int i = 0; i <M-N; i++) {
		ans += diffs[i];
	}


Compiler output:
a.cc: In function 'int main()':
a.cc:30:10: error: expected '}' at end of input
   30 |         }
      |          ^
a.cc:8:12: note: to match this '{'
    8 | int main() {
      |            ^
Language: C++

#include <iostream>
#include<algorithm>
#include<vector>
#include<string>
using namespace std;


int main() {
	long long int N,M;
	cin >> N>>M;
	if (N >= M) {
		cout << 0 << endl;
		return 0;
	}
	vector<long long int> X(N);
	for (auto& i : X)cin >> i;

	sort(X.begin(), X.end());

	vector<long long int> diffs;
	for (int i = 1; i <M; i++) {
		diffs.push_back.back(X[i] - X[i - 1]);
	}
	sort(diffs.begin(), diffs.end());

	long long ans=0;

	for (int i = 0; i <M-N; i++) {
		ans += diffs[i];
	}
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:23: error: invalid use of member function 'std::vector<long long int>::push_back' (did you forget the '()' ?)
   22 |                 diffs.push_back.back(X[i] - X[i - 1]);
      |                 ~~~~~~^~~~~~~~~
Language: C++

int main() {
    Int N,M;
    cin >> N>>M;
    Int ans =0;

    if(N<M){
        vi X = vi(M);
        rep(i,M){
            cin >> X[i];
        }

        sort(X.begin(), X.end());

        vi L;
        rep(i,M-1){
            L.push_back(X[i+1]-X[i]);
        }

        sort(L.begin(), L.end(), greater<>());
        Int Ltotal = 0;
        rep(i,N-1){
            Ltotal += L[i];
        }
        ans = (X[M-1]-X[0]) - Ltotal;
    }

    cout << ans;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:2:5: error: 'Int' was not declared in this scope; did you mean 'int'?
    2 |     Int N,M;
      |     ^~~
      |     int
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin >> N>>M;
      |     ^~~
a.cc:3:12: error: 'N' was not declared in this scope
    3 |     cin >> N>>M;
      |            ^
a.cc:3:15: error: 'M' was not declared in this scope
    3 |     cin >> N>>M;
      |               ^
a.cc:4:8: error: expected ';' before 'ans'
    4 |     Int ans =0;
      |        ^~~~
      |        ;
a.cc:7:9: error: 'vi' was not declared in this scope; did you mean 'void'?
    7 |         vi X = vi(M);
      |         ^~
      |         void
a.cc:8:13: error: 'i' was not declared in this scope
    8 |         rep(i,M){
      |             ^
a.cc:8:9: error: 'rep' was not declared in this scope
    8 |         rep(i,M){
      |         ^~~
a.cc:12:14: error: 'X' was not declared in this scope
   12 |         sort(X.begin(), X.end());
      |              ^
a.cc:12:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   12 |         sort(X.begin(), X.end());
      |         ^~~~
      |         short
a.cc:14:11: error: expected ';' before 'L'
   14 |         vi L;
      |           ^~
      |           ;
a.cc:19:14: error: 'L' was not declared in this scope
   19 |         sort(L.begin(), L.end(), greater<>());
      |              ^
a.cc:19:34: error: 'greater' was not declared in this scope
   19 |         sort(L.begin(), L.end(), greater<>());
      |                                  ^~~~~~~
a.cc:19:42: error: expected primary-expression before '>' token
   19 |         sort(L.begin(), L.end(), greater<>());
      |                                          ^
a.cc:19:44: error: expected primary-expression before ')' token
   19 |         sort(L.begin(), L.end(), greater<>());
      |                                            ^
a.cc:20:12: error: expected ';' before 'Ltotal'
   20 |         Int Ltotal = 0;
      |            ^~~~~~~
      |            ;
a.cc:24:9: error: 'ans' was not declared in this scope
   24 |         ans = (X[M-1]-X[0]) - Ltotal;
      |         ^~~
a.cc:24:31: error: 'Ltotal' was not declared in this scope
   24 |         ans = (X[M-1]-X[0]) - Ltotal;
      |                               ^~~~~~
a.cc:27:5: error: 'cout' was not declared in this scope
   27 |     cout << ans;
      |     ^~~~
a.cc:27:13: error: 'ans' was not declared in this scope
   27 |     cout << ans;
      |             ^~~
Language: C++

#include <iostream>
#include <vector>
#include <map>
#include <algorithm>

using namespace std;

int main(){
  int N, M;
  cin >> N >> M;
  
  vector<int> A(N);
  for(int i = 0; i < M; i++) cin >> A[i];
  
  sort(A.begin(), A.end());
  
  vector<int> B(M-1);
  
  for(int i = 0; i < M-1; i++){
    B[i] = A[i+1]-A[i];
  }
  
  sort(B.begin(),B.end(),greater<int>);
  int th = B[N - 2];
  
  int ans = 0;
  for(int i = 0; i < M-1; i++){
    if(A[i + 1] - A[i] < th);
    ans += B[i];
  }
  cout << ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:38: error: expected primary-expression before ')' token
   23 |   sort(B.begin(),B.end(),greater<int>);
      |                                      ^
Language: C++

#include <iostream>
#include <vector>
#include <map>
#include <algorithm>

using namespace std;

int main(){
  int N, M;
  cin >> N >> M;
  
  vector<int> A(N);
  for(int i = 0; i < M; i++) cin >> A[i];
  
  sort(A.begin(), A.end());
  
  vector<int>> B(M-1);
  
  for(int i = 0; i < M-1; i++){
    B[i] = A[i+1]-A[i];
  }
  
  sort(B.begin(),B.end(),greater<int>);
  int th = B[N - 2];
  
  int ans = 0;
  for(int i = 0; i < M-1; i++){
    if(A[i + 1] - A[i] < th);
    ans += B[i];
  }
  cout << ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:13: error: expected unqualified-id before '>' token
   17 |   vector<int>> B(M-1);
      |             ^~
a.cc:20:5: error: 'B' was not declared in this scope
   20 |     B[i] = A[i+1]-A[i];
      |     ^
a.cc:23:8: error: 'B' was not declared in this scope
   23 |   sort(B.begin(),B.end(),greater<int>);
      |        ^
a.cc:23:38: error: expected primary-expression before ')' token
   23 |   sort(B.begin(),B.end(),greater<int>);
      |                                      ^
Language: C++

#include <cstdio>
#include <vector>
#define repi(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,a) repi(i,0,a)
#define all(a) (a).begin(), (a).end()

int N, M;
int X[100010];
std::vector<int> ds;

int main()
{
  scanf( "%d%d", &N, &M );
  rep( i, M )
    scanf( "%d", X+i );

  std::sort( X, X+M );

  rep( i, M-1 )
    ds.push_back( X[i+1]-X[i] );

  std::sort( ds.rbegin(), ds.rend() );

  int ans = 0;

  repi( i, N-1, ds.size() )
    ans += ds[i];
  
  printf( "%d\n", ans );

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:8: error: 'sort' is not a member of 'std'
   17 |   std::sort( X, X+M );
      |        ^~~~
a.cc:22:8: error: 'sort' is not a member of 'std'
   22 |   std::sort( ds.rbegin(), ds.rend() );
      |        ^~~~
Language: C++

#include<iostream>
#include<algorithm>
#include<string>
#include<numeric>
#include<vector>
using namespace std;

int main(){
  int n,m;
  cin >> n >> m;
  int x[m];
  for (int i=0;i<m;i++) cin >> x[i];
  sort(x,x+m);
  int l(m-1);
  for (int i=0;i<m-1;i++) l[i] = x[i+1] - x[i];
  sort(l,l+m-1;
  int count = x[m-1] - x[0];
  for (int i=0;i<n-1;i++) count -= l[m-2-i];
  if (n >= m) cout << 0 << endl;
  else cout << count << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:28: error: invalid types 'int[int]' for array subscript
   15 |   for (int i=0;i<m-1;i++) l[i] = x[i+1] - x[i];
      |                            ^
a.cc:16:15: error: expected ')' before ';' token
   16 |   sort(l,l+m-1;
      |       ~       ^
      |               )
a.cc:18:37: error: invalid types 'int[int]' for array subscript
   18 |   for (int i=0;i<n-1;i++) count -= l[m-2-i];
      |                                     ^
Language: Java

import java.util.Arrays;
import java.util.Scanner;

// C - Stones
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] x = new int[M];
		int[] width = new int[M-1]; // 隣り合う二点の距離
		int sum = 0;
		int out = 0;
		if (N >= M) {
			System.out.println(0);
		} else {
			for (int i = 0; i < x.length; i++) {
				x[i]=sc.nextInt();
			}
			Arrays.sort(x); // 小さい順
			for (int i=0; i < width.length; i++) {
				width[i]=x[i+1]-x[i];
			}
			Arrays.sort(width);
			for (int i = 0; i < N-1; i++) {
				sum+=width[width.length-1-i];
			}
		}
	}
}
回答みた

Compiler output:
Main.java:32: error: reached end of file while parsing
????
^
1 error
Language: C++


#include <iostream>
#include <vector>

using namespace std;

int main(){
    int N,M;
    cin >> N >> M;
    vector<int> X(M);
    for(int i = 0;i < M;i++){
        cin >> X[i];
    }
    if(N >= M){
        cout << 0 << endl;
    }else{
        sort(X.begin(),X.end());
        int S = 0;
        vector<int> Y(M-1);
        for(int i = 0;i < M-1;i++){
            Y[i] = X[i+1] - X[i];
            S += Y[i];
        }
        sort(Y.begin(),Y.end(),greater<int>());
        for(int i = 0;i < N-1;i++){
            S -= Y[i];
        }
        cout << S << endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   17 |         sort(X.begin(),X.end());
      |         ^~~~
      |         short
Language: C++

#include <bits/stdc++.h>
using namespace std;
const long long mod = pow(10, 9) + 7;
const long long INF = 1LL << 60;
template <class T> bool chmin(T& a, T b){if (a > b) {a = b; return true;} return false;}
template <class T> bool chmax(T& a, T b){if (a < b) {a = b; return true;} return false;}
int divCeil(int A, int B) {return (A + (B - 1)) / B;}
long long divCeil(long long A, int B) {return (A + (B - 1)) / B;}
long long divCeil(int A, long long B) {return (A + (B - 1)) / B;}
long long divCeil(long long A, long long B) {return (A + (B - 1)) / B;}

int main()
{
  int N, M;
  cin >> N >> M;
  vector<int> X(M);
  for (int i = 0; i < M; i++) cin >> X.at(i);
  
  sort(X.begin(), X.end(), greater<int>);
  
  int ans = 0;
  for (int i = N - 1; i < M; i++) ans += X.at(i);
  
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:40: error: expected primary-expression before ')' token
   19 |   sort(X.begin(), X.end(), greater<int>);
      |                                        ^
Language: C++

#include <bits/stdc++.h>

#define ll          long long
#define mp	    make_pair
#define pb          push_back
#define pii         pair<int,int>
#define vi          vector<int>
#define vii         vector<pii>
#define mi          map<int,int>
#define mii         map<pii,int>
#define all(a)      (a).begin(),(a).end()
#define x           first
#define y           second
#define sz(x)       (int)x.size()
#define endl        '\n'
#define hell        1000000007
#define lbnd        lower_bound
#define ubnd        upper_bound
#define bs          binary_search
#define gcd(a,b)    __gcd((a),(b))
#define lcm(a,b)    ((a)*(b)) / gcd((a),(b))
#define rep(i,a,b)  for(int i=a;i<b;i++)
using namespace std;

ll s,n,m;
void solve(){
	cin>>n>>m;
	vi v,v2;
	rep(i,0,m){
		int t;
		cin>>t;
		v.pb(t);
	}
	if(n>=m){
		cout<<0<<endl;
		return;
	}
	sort(all(v));
	rep(i,1,m)
		v2.pb(v[i]-v[i-1]);
	s = v[m-1]-v[0];
	sort(all(v2));
	reverse(all(v2));
	rep(i,0,n-1)
		s-=v2[i];
	cout<<max(0,s)<<endl;
}
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t;
     t =1;
 //    cin>>t;
    while(t--){
        solve();
    }
    return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:46:18: error: no matching function for call to 'max(int, long long int&)'
   46 |         cout<<max(0,s)<<endl;
      |               ~~~^~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:46:18: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   46 |         cout<<max(0,s)<<endl;
      |               ~~~^~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:46:18: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   46 |         cout<<max(0,s)<<endl;
      |               ~~~^~~~~
Language: C++

// 数直線と N 個のコマを用いて 1 人でゲームを行います。
// はじめ、これらのコマをそれぞれ好きな整数座標に置きます。
// このとき、同じ座標に複数のコマを置いても構いません。
// 以下の移動を繰り返して、座標 X1,X2,...,XM の M 個の地点全てをいずれかのコマで訪れることが目的です。
// 移動: コマを 1 つ選び、そのコマの座標を x とする。そのコマを座標 x+1 もしくは座標 x−1 に移動する。
// ただし、最初にコマを置いた座標はその時点で訪れたとみなします。
// 目的を達成するまでに移動を行う回数の最小値を求めてください。

// https://atcoder.jp/contests/abc117/tasks/abc117_c

#include <iostream>
#include <vector>
#include <algorithm>


using namespace std;

int main()
{
    // さぁ！問題を解くわよ！
    // はい！


    int N, M;
    cin >> N >> M;

    // vector をお使いになられたら？
    // 不勉強でございました
    vector<int> X(M);
    for (auto& x : X) {
        cin >> x;
    }
    // さて、次はどういたしますの？
    // まずはソートするのがよくてよ

    std::sort(X.begin(), X.end());

    int sum = 0;
    for (int i = 0; i < M - 1, i++) {
        sum += X[i + 1] - X[i] - 1;
    }

    cout << sum;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:39:35: error: expected ';' before ')' token
   39 |     for (int i = 0; i < M - 1, i++) {
      |                                   ^
      |                                   ;
Language: C++

#include <iostream>

using namespace std;

int main()
{
    int n,m;
    cin>>n>>m;
    int a[m];
    int b[m-1];
    int result;
    for(int i=0;i<m;i++)
        cin>>a[i];
    sort(a,a+m);

    for(int i=0;i<m-1;i++)
        b[i] = a[i+1]-a[i];

    sort(b,b+m-1);
    result = a[m-1]-a[0];
    for(int i=0;i<n-1;i++)
        result -= b[m-2-i];
    cout << result;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   14 |     sort(a,a+m);
      |     ^~~~
      |     short
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0; i < n; i++)
using namespace std;
using ll = long long;

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);

  int N, M;
  cin >> N >> M;
  vector<int> X(M);
  REP(i, M) cin >> X[i];
  sort(X.begin(), X.end());
  vector<int> D(M - 1);
  if(M == 1) {
    cout << ans << endl;
  } else {
    REP(i, M - 1) D[i] = X[i + 1] - X[i];
    sort(D.begin(), D.end());
    REP(i, N - 1) { D.pop_back(); }
    int ans = 0;
    REP(i, D.size()) { ans += D[i]; }
    cout << ans << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   17 |     cout << ans << endl;
      |             ^~~
      |             abs
Language: C++

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

int main() {
	int N , M; cin >> N >> M;
	vector<int> point(M), dpm(M-1);
	for(int i = 0 ; i < M ; i++){
		cin >> point[i];
	}
	sort(point.begin(),point.end())
	for(int i = 0 ; i < M-1 ; i++){
		dpm[i] = point[i+1] -point[i];
	}
	sort(dpm.begin(),dpm.end());
	reverse(dpm.begin(),dpm.end());
	int ans = 0;
	for(int i = N-1 ; i < M-1 ; i++){
		ans += dpm[i];
	}
	cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:40: error: expected ';' before 'for'
   10 |         sort(point.begin(),point.end())
      |                                        ^
      |                                        ;
   11 |         for(int i = 0 ; i < M-1 ; i++){
      |         ~~~                             
a.cc:11:25: error: 'i' was not declared in this scope
   11 |         for(int i = 0 ; i < M-1 ; i++){
      |                         ^
Language: C++

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

int main() {
	int N , M; cin >> N >> M;
	vector<int> point(M), dpm(M-1);
	for(int i = 0 ; i < M ; i++){
		cin >> point[i];
	}
	for(int i = 0 ; i < M-1 ; i++){
		dpm[i] = point[i+1] -pointM[i];
	}
	sort(dpm.begin(),dpm.end());
	reverse(dpm.begin(),dpm.end());
	int ans = 0;
	for(int i = N-1 ; i < M-1 ; i++){
		ans += dpm[i];
	}
	cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:38: error: 'pointM' was not declared in this scope; did you mean 'point'?
   11 |                 dpm[i] = point[i+1] -pointM[i];
      |                                      ^~~~~~
      |                                      point
Language: C++

#include <iostream>
#include <math.h>
#include <string.h>
#include <vector>

using namespace std;

int main() {
    int m,n;
    cin>>n>>m;
    int x[m];
    int ans=0;
    if(m>n){
        for(int i=0;i<=m-1;i++){
            cin>>x[i];
        }
        sort(x,x+m);
        int a[m-1];
        for(int i=0;i<=m-2;i++){
            a[i]=x[i+1]-x[i];
        }
        sort(a,a+m-1);
        for(int i=0;i<=m-n-1;i++){
            ans=ans+a[i];
        }
    }
    cout<<ans<<endl;
    
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:17:9: error: 'sort' was not declared in this scope; did you mean 'sqrt'?
   17 |         sort(x,x+m);
      |         ^~~~
      |         sqrt
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const double EPS = 1e-9;
const int INF = 1e9;
const int MOD = 1e9+7;
const ll LINF = 1e18;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<vector<ll>> vll;
typedef pair<int, int> pi;
typedef pair<ll, ll> pll;
typedef map<int, int> mi;
typedef set<int> si;
#define VV(T) vector<vector< T > >
#define dump(x)  cout << #x << " = " << (x) << endl
#define YES(n) cout << ((n) ? "YES" : "NO"  ) << endl
#define Yes(n) cout << ((n) ? "Yes" : "No"  ) << endl
#define POSSIBLE(n) cout << ((n) ? "POSSIBLE" : "IMPOSSIBLE"  ) << endl
#define Possible(n) cout << ((n) ? "Possible" : "Impossible"  ) << endl

#define rep(i, n) REP(i, 0, n)                              // 0, 1, ..., n-1
#define REP(i, x, n) for(int i = x; i < n; i++)             // x, x + 1, ..., n-1
#define invrep(i, n) for(int i = (n)-1; i >= 0; i--)        // n-1, n-2, ..., 0
#define invREP(i, x, n) for(int i = (n)-1; i >= (x; i--)    // n-1, n-2, ..., x
#define FOREACH(x,a) for(auto& (x) : (a) )

#define ALL(v) (v).begin() , (v).end()
#define RALL(v) (v).rbegin(), (v).rend()

#define PB push_back

#define COUT(x) cout << (x) << endl
#define VECCIN(x) for(auto&youso_: (x) )cin>>youso_
#define VECCOUT(x) for(auto&youso_: (x) )cout<<youso_<<" ";cout<<endl

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }


int main(){
    int N, M; cin >> N >> M;
    vi X(M), A(M);
    rep(i, M) cin >> X[i];
    sort(ALL(X));
    rep(i, M){
        A[i] = abs(X[i] - X[i + 1]);
    }
    sort(ALL(A);
    int ans = 0;
    rep(i, m - n){
        ans += a[i];
    }
    COUT(ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:49:16: error: expected ')' before ';' token
   49 |     sort(ALL(A);
      |         ~      ^
a.cc:51:12: error: 'm' was not declared in this scope
   51 |     rep(i, m - n){
      |            ^
a.cc:23:41: note: in definition of macro 'REP'
   23 | #define REP(i, x, n) for(int i = x; i < n; i++)             // x, x + 1, ..., n-1
      |                                         ^
a.cc:51:5: note: in expansion of macro 'rep'
   51 |     rep(i, m - n){
      |     ^~~
a.cc:51:16: error: 'n' was not declared in this scope
   51 |     rep(i, m - n){
      |                ^
a.cc:23:41: note: in definition of macro 'REP'
   23 | #define REP(i, x, n) for(int i = x; i < n; i++)             // x, x + 1, ..., n-1
      |                                         ^
a.cc:51:5: note: in expansion of macro 'rep'
   51 |     rep(i, m - n){
      |     ^~~
a.cc:52:16: error: 'a' was not declared in this scope
   52 |         ans += a[i];
      |                ^
Language: C++

#!/usr/bin/env python3

if __name__ == "__main__":
    n,m = map(int, input().split())
    l = list(map(int, input().split()))

    if n >= m:
        print("0")
    else:
        d = (m-1) * [0]

        l = sorted(l)
        for i in range(1,m):
            d[i-1] = l[i] - l[i-1]
        d = sorted(d, key=lambda x: -x)

        ans = 0
        for i in range(n-1):
            ans += d[i]

        print(l[-1] - l[0] - ans)




Compiler output:
a.cc:1:2: error: invalid preprocessing directive #!
    1 | #!/usr/bin/env python3
      |  ^
a.cc:3:1: error: expected unqualified-id before 'if'
    3 | if __name__ == "__main__":
      | ^~
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main() {
    long long N, M; cin >> N >> M;
    vector<long long> X(M);
    for (int i = 0; i < M; ++i) cin >> X[i];
    sort(X.begin(), X.end());
        
    vector<long long> diffs;
    for (int i = 1; i < X.size(); ++i) diffs.push_back(X[i] - X[i-1]);
    sort(diffs.begin(), diffs.end(), greater<long long>());
        
    long long res = X.back() - X[0];
    for (int i = 0; i < min(diffs.size(), N-1); ++i) res -= diffs[i];
    cout << res << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:28: error: no matching function for call to 'min(std::vector<long long int>::size_type, long long int)'
   17 |     for (int i = 0; i < min(diffs.size(), N-1); ++i) res -= diffs[i];
      |                         ~~~^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:17:28: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'long long int')
   17 |     for (int i = 0; i < min(diffs.size(), N-1); ++i) res -= diffs[i];
      |                         ~~~^~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:3:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:17:28: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
   17 |     for (int i = 0; i < min(diffs.size(), N-1); ++i) res -= diffs[i];
      |                         ~~~^~~~~~~~~~~~~~~~~~~