#include<bits/stdc++.h>
using namespace std;
int main()
{
	long long x1,x2,x3,x4;
	cin>>x1>>x2>>y1>>y2;
	long long t1=x1*y1,t2=x1*y2,t3=x2*y1,t4=x2*y2;
	if(t1>INT_MAX || t1<INT_MIN || t2>INT_MAX || t2<INT_MIN || t3>INT_MAX || t3<INT_MIN || t4>INT_MAX || t4<INT_MIN)
		cout<<"long long int";
	else
		cout<<"int";
	return 0;
}

报错信息：

/tmp/compiler_xn7x59ll/src: In function ‘int main()’:
/tmp/compiler_xn7x59ll/src:6:20: 错误：no match for ‘operator>>’ (operand types are ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} and ‘double(double) noexcept’)
    6 |         cin>>x1>>x2>>y1>>y2;
      |         ~~~~~~~~~~~^~~~
      |                |     |
      |                |     double(double) noexcept
      |                std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
In file included from /nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/sstream:40,
                 from /nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/complex:45,
                 from /nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/ccomplex:39,
                 from /nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/x86_64-unknown-linux-gnu/bits/stdc++.h:127,
                 from /tmp/compiler_xn7x59ll/src:1:
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:325:7: 附注：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)
  325 |       operator>>(void*& __p)
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:325:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 错误：invalid conversion from ‘double (*)(double) noexcept’ to ‘void*’ [-fpermissive]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
      |                      |
      |                      double (*)(double) noexcept
/tmp/compiler_xn7x59ll/src:6:22: 错误：无法将右值‘(void*)y1’绑定到‘void*&’
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:201:7: 附注：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)
  201 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:201:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 错误：invalid conversion from ‘double (*)(double) noexcept’ to ‘long long unsigned int’ [-fpermissive]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
      |                      |
      |                      double (*)(double) noexcept
/tmp/compiler_xn7x59ll/src:6:22: 错误：无法将右值‘(long long unsigned int)y1’绑定到‘long long unsigned int&’
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:197:7: 附注：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)
  197 |       operator>>(long long& __n)
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:197:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 错误：invalid conversion from ‘double (*)(double) noexcept’ to ‘long long int’ [-fpermissive]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
      |                      |
      |                      double (*)(double) noexcept
/tmp/compiler_xn7x59ll/src:6:22: 错误：无法将右值‘(long long int)y1’绑定到‘long long int&’
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:192:7: 附注：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)
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:192:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 错误：invalid conversion from ‘double (*)(double) noexcept’ to ‘long unsigned int’ [-fpermissive]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
      |                      |
      |                      double (*)(double) noexcept
/tmp/compiler_xn7x59ll/src:6:22: 错误：无法将右值‘(long unsigned int)y1’绑定到‘long unsigned int&’
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:188:7: 附注：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)
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:188:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 错误：invalid conversion from ‘double (*)(double) noexcept’ to ‘long int’ [-fpermissive]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
      |                      |
      |                      double (*)(double) noexcept
/tmp/compiler_xn7x59ll/src:6:22: 错误：无法将右值‘(long int)y1’绑定到‘long int&’
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:184:7: 附注：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)
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:184:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 错误：invalid conversion from ‘double (*)(double) noexcept’ to ‘unsigned int’ [-fpermissive]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
      |                      |
      |                      double (*)(double) noexcept
/tmp/compiler_xn7x59ll/src:6:22: 错误：无法将右值‘(unsigned int)y1’绑定到‘unsigned int&’
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:181:7: 附注：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);
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:181:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 错误：invalid conversion from ‘double (*)(double) noexcept’ to ‘int’ [-fpermissive]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
      |                      |
      |                      double (*)(double) noexcept
/tmp/compiler_xn7x59ll/src:6:22: 错误：无法将右值‘(int)y1’绑定到‘int&’
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:177:7: 附注：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)
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:177:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 错误：invalid conversion from ‘double (*)(double) noexcept’ to ‘short unsigned int’ [-fpermissive]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
      |                      |
      |                      double (*)(double) noexcept
/tmp/compiler_xn7x59ll/src:6:22: 错误：无法将右值‘(short unsigned int)y1’绑定到‘short unsigned int&’
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:174:7: 附注：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);
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:174:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 错误：invalid conversion from ‘double (*)(double) noexcept’ to ‘short int’ [-fpermissive]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
      |                      |
      |                      double (*)(double) noexcept
/tmp/compiler_xn7x59ll/src:6:22: 错误：无法将右值‘(short int)y1’绑定到‘short int&’
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:170:7: 附注：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)
      |       ^~~~~~~~
/nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/istream:170:7: 附注：  conversion of argument 1 would be ill-formed:
/tmp/compiler_xn7x59ll/src:6:22: 警告：‘double y1(double)’的地址永远不会为 NULL [-Waddress]
    6 |         cin>>x1>>x2>>y1>>y2;
      |                      ^~
In file included from /nix/store/x8lqlydsxbrwvf6p7v18gws8kn1xl37f-glibc-2.38-23-dev/include/features.h:503,
                 from /nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/x86_64-unknown-linux-gnu/bits/os_defines.h:39,
                 from /nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0/include/c++/13.2.0/x86_64-unknown-linux-gnu/bits/c++config.h:679,
                 from /nix/store/al0w33yvyzkjm86ndpf42knjfymfisph-luogu-gcc-13.2.0
...

%%%%%%