Language: C++

#include<bits/stdc++.h>
#define ljh ioi_aker
#define yxy tourist
#define wlj ugly_and_slow
#define pmh legendary_grandmaster
using namespace std;
#define cs const 
#define int long long
#define low(i) (i&(-i))
#define mid ((l+r)>>1)
#define ls (now<<1)
#define rs (now<<1|1)
#define par pair<int,int>
#define mp make_pair
#define pb push_back
#define fr first 
#define se second
#define cn(x) memset(x, 0, sizeof(x))
#define rep(i, x, y) for(int i=x; i<=y; ++i)
#define drep(i, x, y) for(int i=x; i>=y; --i)
#define fore(i, x) for(int i=fir[x]; i; i=nex[i])
#define dbg cout << "---------------------------------\n"
cs int base = 233;
cs int ff = 2e6+1;
cs int mod = 998244353;
cs int inf = 1e17+1;
int fir[ff], nex[ff], to[ff], tot;
void add(int x, int y)
{
	if( x == y ) return;
	nex[++tot] = fir[x];
	fir[x] = tot;
	to[tot] = y;
}
int n, k, a[ff], s, su;
void init()
{
	cin >> a >> b >> c;
	cout << c << " " << a << " " << b;
}
signed main()
{
	int T = 1;
//	cin >> T;
	while(T--) 
		init();
} 

Compiler output:
a.cc: In function 'void init()':
a.cc:38:13: error: no match for 'operator>>' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'long long int [2000001]')
   38 |         cin >> a >> b >> c;
      |         ~~~ ^~ ~
      |         |      |
      |         |      long long int [2000001]
      |         std::istream {aka std::basic_istream<char>}
In file included from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127,
                 from a.cc:1:
/usr/include/c++/14/istream:170:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  170 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:170:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'long long int*'
   38 |         cin >> a >> b >> c;
      |                ^
/usr/include/c++/14/istream:174:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  174 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:174:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: invalid conversion from 'long long int*' to 'short int' [-fpermissive]
   38 |         cin >> a >> b >> c;
      |                ^
      |                |
      |                long long int*
a.cc:38:16: error: cannot bind rvalue '(short int)((long long int*)(& a))' to 'short int&'
/usr/include/c++/14/istream:177:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  177 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:177:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: invalid conversion from 'long long int*' to 'short unsigned int' [-fpermissive]
   38 |         cin >> a >> b >> c;
      |                ^
      |                |
      |                long long int*
a.cc:38:16: error: cannot bind rvalue '(short unsigned int)((long long int*)(& a))' to 'short unsigned int&'
/usr/include/c++/14/istream:181:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  181 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:181:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: invalid conversion from 'long long int*' to 'int' [-fpermissive]
   38 |         cin >> a >> b >> c;
      |                ^
      |                |
      |                long long int*
a.cc:38:16: error: cannot bind rvalue '(int)((long long int*)(& a))' to 'int&'
/usr/include/c++/14/istream:184:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  184 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:184:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: invalid conversion from 'long long int*' to 'unsigned int' [-fpermissive]
   38 |         cin >> a >> b >> c;
      |                ^
      |                |
      |                long long int*
a.cc:38:16: error: cannot bind rvalue '(unsigned int)((long long int*)(& a))' to 'unsigned int&'
/usr/include/c++/14/istream:188:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:188:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: invalid conversion from 'long long int*' to 'long int' [-fpermissive]
   38 |         cin >> a >> b >> c;
      |                ^
      |                |
      |                long long int*
a.cc:38:16: error: cannot bind rvalue '(long int)((long long int*)(& a))' to 'long int&'
/usr/include/c++/14/istream:192:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:192:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: invalid conversion from 'long long int*' to 'long unsigned int' [-fpermissive]
   38 |         cin >> a >> b >> c;
      |                ^
      |                |
      |                long long int*
a.cc:38:16: error: cannot bind rvalue '(long unsigned int)((long long int*)(& a))' to 'long unsigned int&'
/usr/include/c++/14/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:199:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: invalid conversion from 'long long int*' to 'long long int' [-fpermissive]
   38 |         cin >> a >> b >> c;
      |                ^
      |                |
      |                long long int*
a.cc:38:16: error: cannot bind rvalue '(long long int)((long long int*)(& a))' to 'long long int&'
/usr/include/c++/14/istream:203:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  203 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:203:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: invalid conversion from 'long long int*' to 'long long unsigned int' [-fpermissive]
   38 |         cin >> a >> b >> c;
      |                ^
      |                |
      |                long long int*
a.cc:38:16: error: cannot bind rvalue '(long long unsigned int)((long long int*)(& a))' to 'long long unsigned int&'
/usr/include/c++/14/istream:328:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  328 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/14/istream:328:7: note:   conversion of argument 1 would be ill-formed:
a.cc:38:16: error: cannot bind non-const lvalue reference of type 'void*&' to an rvalue of type 'void*'
   38 |         cin >> a >> b >> c;
      |                ^
/usr/include/c++/14/istream:219:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  219 |       operator>>(float& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:219:25: note:   no known conversion for argument 1 from 'long long int [2000001]' to 'float&'
  219 |       operator>>(float& __f)
      |                  ~~~~~~~^~~
/usr/include/c++/14/istream:223:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  223 |       operator>>(double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:223:26: note:   no known conversion for argument 1 from 'long long int [2000001]' to 'double&'
  223 |       operator>>(double& __f)
      |                  ~~~~~~~~^~~
/usr/include/c++/14/istream:227:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  227 |       operator>>(long double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:227:31: note:   no known conversion for argument 1 from 'long long int [2000001]' to 'long double&'
  227 |       operator>>(long double& __f)
      |                  ~~~~~~~~~~~~~^~~
/usr/include/c++/14/istream:122:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*)(__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  122 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/14/istream:122:36: note:   no known conversion for argument 1 from 'long long int [2000001]' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'}
  122 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |                  ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/istream:126:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__i