Language: C++

v#include <bits/stdc++.h>
//#include <boost/multiprecision/cpp_int.hpp>
using namespace std;

using dou =long double;
string yes="yes";
string Yes="Yes";
string YES="YES";
string no="no";
string No="No";
string NO="NO";

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
typedef long long ll;
typedef pair<int,int> P;
typedef pair<ll,ll> PL;
const ll mod = 1000000007ll;
//const ll mod = 10007;

struct mint {
  ll x; // typedef long long ll;
  mint(ll x=0):x((x%mod+mod)%mod){}
  mint operator-() const { return mint(-x);}
  mint& operator+=(const mint a) {
    if ((x += a.x) >= mod) x -= mod;
    return *this;
  }
  mint& operator-=(const mint a) {
    if ((x += mod-a.x) >= mod) x -= mod;
    return *this;
  }
  mint& operator*=(const mint a) { (x *= a.x) %= mod; return *this;}
  mint operator+(const mint a) const { return mint(*this) += a;}
  mint operator-(const mint a) const { return mint(*this) -= a;}
  mint operator*(const mint a) const { return mint(*this) *= a;}
  mint pow(ll t) const {
    if (!t) return 1;
    mint a = pow(t>>1);
    a *= a;
    if (t&1) a *= *this;
    return a;
  }

  // for prime mod
  mint inv() const { return pow(mod-2);}
  mint& operator/=(const mint a) { return *this *= a.inv();}
  mint operator/(const mint a) const { return mint(*this) /= a;}
};
istream& operator>>(istream& is, const mint& a) { return is >> a.x;}
ostream& operator<<(ostream& os, const mint& a) { return os << a.x;}




#define rep(i, n)         for(ll i = 0; i < (ll)(n); i++)
#define brep(n)           for(int bit=0;bit<(1<<n);bit++)
#define bbrep(n)           for(int bbit=0;bbit<(1<<n);bbit++)
#define erep(i,container) for (auto &i : container)
#define itrep(i,container) for (auto i : container)
#define irep(i, n)        for(ll i = n-1; i >= (ll)0ll; i--)
#define rrep(i,m,n) for(ll i = m; i < (ll)(n); i++)
#define reprep(i,j,h,w) rep(i,h)rep(j,w)
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define VEC(type,name,n) std::vector<type> name(n);rep(i,n)std::cin >> name[i];
#define pb push_back
#define pf push_front
#define query int qq;std::cin >> qq;rep(qqq,qq)
#define lb lower_bound
#define ub upper_bound
#define fi first
#define se second
#define itn int
#define mp make_pair
#define sum(a) accumulate(all(a),0ll)
#define keta fixed<<setprecision
#define vout(a) erep(qxqxqx,a)std::cout << qxqxqx << ' ';std::cout  << std::endl;
#define vvector(name,typ,m,n,a)vector<vector<typ> > name(m,vector<typ> (n,a))
//#define vvector(name,typ,m,n)vector<vector<typ> > name(m,vector<typ> (n))
#define vvvector(name,t,l,m,n,a) vector<vector<vector<t> > > name(l, vector<vector<t> >(m, vector<t>(n,a)));
#define vvvvector(name,t,k,l,m,n,a) vector<vector<vector<vector<t> > > > name(k,vector<vector<vector<t> > >(l, vector<vector<t> >(m, vector<t>(n,a)) ));
#define case std::cout <<"Case #" <<qqq+1<<":"
#define res resize
#define as assign
#define ffor for(;;)
#define ppri(a,b) std::cout << a<<" "<<b << std::endl
#define pppri(a,b,c) std::cout << a<<" "<<b <<" "<< c<<std::endl
#define aall(x,n) (x).begin(),(x).begin()+(n)
#define ssum(a) accumulate(a,0ll) 
#define stirng string
#define gin(a,b) int a,b;std::cin >> a>>b;a--;b--;
//#define grid_input(a,type) int h,w;std::cin >> h>>w;vvector(a,type,h,w,0);reprep(i,j,h,w)std::cin >> a[i][j];

//typedef long long T;
ll ceil(ll a,ll b){
    return ((a+b-1)/b);
}
const int INF = 2000000000;
//const ll INF64 =3223372036854775807ll;
//const ll INF64 = 9223372036854775807ll;
const ll INF64 = 9223372036854775ll;
const ll MOD = 1000000007ll;
//const ll MOD = 1000003ll;
const ll OD = 1000000000000007ll;
const dou pi=3.141592653589793;
long long modpow(long long a, long long n) { //累乗の余剰
    long long res = 1;
    while (n > 0) {
        if (n & 1) res = res * a % MOD;
        a = a * a % MOD;
        n >>= 1;
    }
    return res;
    
}

//メモ
//tuple<hoge,huga,foo> tのget関数はget<i>(t)
//resizeはメンバ関数
//三項演算子を覚えよう
// a?b:cと書くと aならばbの処理をする
int main(){
    ll n,x;
    std::cin >> n>>x;
    VEC(ll,a,n);
    sort(all(a));
    itn d=0;
    rep(i,n){
        d+=a[i];
        if(d>x){
            std::cout << i << std::endl;
            exit(0);
        }
    }
    if(sum(a)==x)std::cout << n << std::endl;
    else std::cout << n-1 << std::endl;
    
}

Compiler output:
a.cc:1:2: error: stray '#' in program
    1 | v#include <bits/stdc++.h>
      |  ^
a.cc:1:1: error: 'v' does not name a type
    1 | v#include <bits/stdc++.h>
      | ^
a.cc:6:1: error: 'string' does not name a type; did you mean 'stirng'?
    6 | string yes="yes";
      | ^~~~~~
      | stirng
a.cc:7:1: error: 'string' does not name a type; did you mean 'stirng'?
    7 | string Yes="Yes";
      | ^~~~~~
      | stirng
a.cc:8:1: error: 'string' does not name a type; did you mean 'stirng'?
    8 | string YES="YES";
      | ^~~~~~
      | stirng
a.cc:9:1: error: 'string' does not name a type; did you mean 'stirng'?
    9 | string no="no";
      | ^~~~~~
      | stirng
a.cc:10:1: error: 'string' does not name a type; did you mean 'stirng'?
   10 | string No="No";
      | ^~~~~~
      | stirng
a.cc:11:1: error: 'string' does not name a type; did you mean 'stirng'?
   11 | string NO="NO";
      | ^~~~~~
      | stirng
a.cc:16:9: error: 'pair' does not name a type
   16 | typedef pair<int,int> P;
      |         ^~~~
a.cc:17:9: error: 'pair' does not name a type
   17 | typedef pair<ll,ll> PL;
      |         ^~~~
a.cc:50:1: error: 'istream' does not name a type; did you mean 'itrep'?
   50 | istream& operator>>(istream& is, const mint& a) { return is >> a.x;}
      | ^~~~~~~
      | itrep
a.cc:51:1: error: 'ostream' does not name a type
   51 | ostream& operator<<(ostream& os, const mint& a) { return os << a.x;}
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:125:10: error: 'cin' is not a member of 'std'
  125 |     std::cin >> n>>x;
      |          ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | v#include <bits/stdc++.h>
a.cc:66:31: error: 'vector' is not a member of 'std'
   66 | #define VEC(type,name,n) std::vector<type> name(n);rep(i,n)std::cin >> name[i];
      |                               ^~~~~~
a.cc:126:5: note: in expansion of macro 'VEC'
  126 |     VEC(ll,a,n);
      |     ^~~
a.cc:1:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
  +++ |+#include <vector>
    1 | v#include <bits/stdc++.h>
a.cc:66:42: error: expected primary-expression before '>' token
   66 | #define VEC(type,name,n) std::vector<type> name(n);rep(i,n)std::cin >> name[i];
      |                                          ^
a.cc:126:5: note: in expansion of macro 'VEC'
  126 |     VEC(ll,a,n);
      |     ^~~
a.cc:126:12: error: 'a' was not declared in this scope
  126 |     VEC(ll,a,n);
      |            ^
a.cc:66:44: note: in definition of macro 'VEC'
   66 | #define VEC(type,name,n) std::vector<type> name(n);rep(i,n)std::cin >> name[i];
      |                                            ^~~~
a.cc:66:65: error: 'cin' is not a member of 'std'
   66 | #define VEC(type,name,n) std::vector<type> name(n);rep(i,n)std::cin >> name[i];
      |                                                                 ^~~
a.cc:126:5: note: in expansion of macro 'VEC'
  126 |     VEC(ll,a,n);
      |     ^~~
a.cc:66:65: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
   66 | #define VEC(type,name,n) std::vector<type> name(n);rep(i,n)std::cin >> name[i];
      |                                                                 ^~~
a.cc:126:5: note: in expansion of macro 'VEC'
  126 |     VEC(ll,a,n);
      |     ^~~
a.cc:127:5: error: 'sort' was not declared in this scope; did you mean 'short'?
  127 |     sort(all(a));
      |     ^~~~
      |     short
a.cc:132:18: error: 'cout' is not a member of 'std'
  132 |             std::cout << i << std::endl;
      |                  ^~~~
a.cc:132:18: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:132:36: error: 'endl' is not a member of 'std'
  132 |             std::cout << i << std::endl;
      |                                    ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | v#include <bits/stdc++.h>
a.cc:133:13: error: 'exit' was not declared in this scope
  133 |             exit(0);
      |             ^~~~
a.cc:1:1: note: 'exit' is defined in header '<cstdlib>'; this is probably fixable by adding '#include <cstdlib>'
  +++ |+#include <cstdlib>
    1 | v#include <bits/stdc++.h>
a.cc:76:16: error: 'accumulate' was not declared in this scope
   76 | #define sum(a) accumulate(all(a),0ll)
      |                ^~~~~~~~~~
a.cc:136:8: note: in expansion of macro 'sum'
  136 |     if(sum(a)==x)std::cout << n << std::endl;
      |        ^~~
a.cc:136:23: error: 'cout' is not a member of 'std'
  136 |     if(sum(a)==x)std::cout << n << std::endl;
      |                       ^~~~
a.cc:136:23: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:136:41: error: 'endl' is not a member of 'std'
  136 |     if(sum(a)==x)std::cout << n << std::endl;
      |                                         ^~~~
a.cc:136:41: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
a.cc:137:15: error: 'cout' is not a member of 'std'
  137 |     else std::cout << n-1 << std::endl;
      |               ^~~~
a.cc:137:15: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:137:35: error: 'endl' is not a member of 'std'
  137 |     else std::cout << n-1 << std::endl;
      |                                   ^~~~
a.cc:137:35: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'