Language: C++

#include <cstdio>
#include <iostream>
#include <string>
#include <vector>
#include <array>
#include <algorithm>
#include <utility>
#include <numeric>
#include <deque>
#include <stack>
#include <queue>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <cmath>
#include <limits>
#include <cassert>
#include <bitset>

#define for0(i, N)    for (int i = 0  ; i <  (N); ++i)
#define for1n(i, N)   for (int i = 1  ; i <= (N); ++i)
#define for1(i, N)    for (int i = 1  ; i <  (N); ++i)
#define forn(i, N)    for (int i = 0  ; i <= (N); ++i)
#define forx(i, N, x) for (int i = (x); i <  (N); ++i)
#define forl(i, N, x, a) for (int i = (x), a = 0; a < (N);  \
                              i = (i + 1) % (N), ++a)

template<size_t i>
std::bitset<i> operator++(std::bitset<i> b, int){
    static_assert(i <= 64, "Cannot cast 64bit int.");
    return b = (unsigned long long)b + 1;
}

template<size_t i>
std::bitset<i> operator++(std::bitset<i> b){
    static_assert(i <= 64, "Cannot cast 64bit int.");
    auto temp = b;
    b++;
    return temp;
}

template<size_t i>
std::bitset<i> operator--(std::bitset<i> b, int){
    static_assert(i <= 64, "Cannot cast 64bit int.");
    return b = (unsigned long long)b - 1;
}

template<size_t i>
std::bitset<i> operator--(std::bitset<i> b){
    static_assert(i <= 64, "Cannot cast 64bit int.");
    auto temp = b;
    b--;
    return temp;
}

using namespace std;

typedef long long ll;
typedef long double ld;
typedef priority_queue<ll> pq;
typedef priority_queue<ll,vector<ll>, greater<ll>> pql;
typedef stack<ll> stk;
typedef queue<ll> qu;
typedef pair<ll, ll> pll;
typedef map<ll, ll> mll;
typedef unordered_map<ll, ll> umll;
typedef set<ll> sll;
typedef unordered_set<ll> usll;

ll gcd(ll a, ll b){
    if (a > b) return gcd(b, a);
    if (a == 0) return b;
    return gcd(b % a, a);
}

ll lcm (ll a, ll b){
    return a * b / gcd(a, b);
}

map<ll, ll> pf(ll x){
    ll y = x;
    ll a = 2;
    map<ll, ll> m;
    while (a * a <= x) {
        if (y % a == 0) {
            y /= a;
            ++m[a];
        } else {
            ++a;
        }
    }
    if (y != 1) ++m[y];

    return m;
}

ll p2(ll x){
    ll result = 0;
    while(!(x % 2)) x /= 2, result++;
    return result;
}

int main(void){
    cin.tie(0); ios::sync_with_stdio(false);
    ll n, m;
    cin >> n >> m;

    vector<ll> a(n), b(n), l(n);
    bool flag = false;
    for0(i, n){
        cin >> a[i];
        b[i] = a[i] / 2;
    }


   int result = b[0];
    for1(i, n){
        result = lcm(result, b[i]);
    }

  for0(i,n)
    if(result/b[i]%2==0){
    cout>>0;return 0;
    }
  
    cout << (result % 2 == 1 ? m / result / 2 + 1 : m / result/2);

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:124:9: error: no match for 'operator>>' (operand types are 'std::ostream' {aka 'std::basic_ostream<char>'} and 'int')
  124 |     cout>>0;return 0;
      |     ~~~~^~~
      |     |     |
      |     |     int
      |     std::ostream {aka std::basic_ostream<char>}
a.cc:124:9: note: candidate: 'operator>>(int, int)' (built-in)
  124 |     cout>>0;return 0;
      |     ~~~~^~~
a.cc:124:9: note:   no known conversion for argument 1 from 'std::ostream' {aka 'std::basic_ostream<char>'} to 'int'
In file included from /usr/include/c++/14/string:55,
                 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:2:
/usr/include/c++/14/bits/basic_string.tcc:835:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
  835 |     operator>>(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.tcc:835:5: note:   template argument deduction/substitution failed:
a.cc:124:11: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
  124 |     cout>>0;return 0;
      |           ^
In file included from /usr/include/c++/14/bits/memory_resource.h:38,
                 from /usr/include/c++/14/string:68:
/usr/include/c++/14/cstddef:131:5: note: candidate: 'template<class _IntegerType> constexpr std::__byte_op_t<_IntegerType> std::operator>>(byte, _IntegerType)'
  131 |     operator>>(byte __b, _IntegerType __shift) noexcept
      |     ^~~~~~~~
/usr/include/c++/14/cstddef:131:5: note:   template argument deduction/substitution failed:
a.cc:124:5: note:   cannot convert 'std::cout' (type 'std::ostream' {aka 'std::basic_ostream<char>'}) to type 'std::byte'
  124 |     cout>>0;return 0;
      |     ^~~~
In file included from /usr/include/c++/14/istream:1109,
                 from /usr/include/c++/14/iostream:42:
/usr/include/c++/14/bits/istream.tcc:978:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)'
  978 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |     ^~~~~~~~
/usr/include/c++/14/bits/istream.tcc:978:5: note:   template argument deduction/substitution failed:
a.cc:124:11: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
  124 |     cout>>0;return 0;
      |           ^
/usr/include/c++/14/istream:849:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)'
  849 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
      |     ^~~~~~~~
/usr/include/c++/14/istream:849:5: note:   template argument deduction/substitution failed:
a.cc:124:11: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
  124 |     cout>>0;return 0;
      |           ^
/usr/include/c++/14/istream:854:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)'
  854 |     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
      |     ^~~~~~~~
/usr/include/c++/14/istream:854:5: note:   template argument deduction/substitution failed:
a.cc:124:11: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
  124 |     cout>>0;return 0;
      |           ^
/usr/include/c++/14/istream:896:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)'
  896 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
      |     ^~~~~~~~
/usr/include/c++/14/istream:896:5: note:   template argument deduction/substitution failed:
a.cc:124:11: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
  124 |     cout>>0;return 0;
      |           ^
/usr/include/c++/14/istream:939:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)'
  939 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
      |     ^~~~~~~~
/usr/include/c++/14/istream:939:5: note:   template argument deduction/substitution failed:
a.cc:124:11: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
  124 |     cout>>0;return 0;
      |           ^
/usr/include/c++/14/istream:945:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)'
  945 |     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
      |     ^~~~~~~~
/usr/include/c++/14/istream:945:5: note:   template argument deduction/substitution failed:
a.cc:124:11: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
  124 |     cout>>0;return 0;
      |           ^
/usr/include/c++/14/istream:1099:5: note: candidate: 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)'
 1099 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
/usr/include/c++/14/istream:1099:5: note:   template argument deduction/substitution failed:
/usr/include/c++/14/istream: In substitution of 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_ostream<char>&; _Tp = int]':
a.cc:124:11:   required from here
  124 |     cout>>0;return 0;
      |           ^
/usr/include/c++/14/istream:1099:5: error: no type named 'type' in 'struct std::enable_if<false, void>'
 1099 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
In file included from a.cc:19:
/usr/include/c++/14/bitset:1597:5: note: candidate: 'template<class _CharT, class _Traits, long unsigned int _Nb> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, bitset<_Nb>&)'
 1597 |     operator>>(std::basic_istream<_CharT, _Traits>& __is, bitset<_Nb>& __x)
      |     ^~~~~~~~
/usr/include/c++/14/bitset:1597:5: note:   template argument deduction/substitution failed:
a.cc:124:11: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
  124 |     cout>>0;return 0;
      |           ^