@[sunyizhe](/user/481330) 不会看编译信息可以 ** 呢。这不是 CE 了吗。
by Sprague_Garundy @ 2022-11-22 19:55:49
你是懂编译的
by Katz @ 2022-11-22 19:56:48
@[Sprague_Garundy](/user/764746) 可是我在本机上能通过啊。也没发现UB?
by sunyizhe @ 2022-11-22 19:57:22
@[sunyizhe](/user/481330) 6，建议发一下你的编译器版本呢，我 GCC 12.2.0 C++14 下 CE 了。
by Sprague_Garundy @ 2022-11-22 19:57:53
我的编译信息太多了，而且这玩意洛谷 IDE 也查得出来吧：
```text
/tmp/compiler_xvbnm5gx/src: 在函数‘int main()’中:
/tmp/compiler_xvbnm5gx/src:22:49: 错误：no match for ‘operator-’ (operand types are ‘std::map<int, int, std::greater<int> >::iterator’ {aka ‘std::_Rb_tree_iterator<std::pair<const int, int> >’} and ‘int’)
22 | for(map<int,int>::iterator it=dict.end()-1;it!=dict.begin();it++)
| ~~~~~~~~~~^~
| | |
| | int
| std::map<int, int, std::greater<int> >::iterator {aka std::_Rb_tree_iterator<std::pair<const int, int> >}
In file included from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/stl_algobase.h:67,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/char_traits.h:39,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ios:40,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/istream:38,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/sstream:38,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:45,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ccomplex:39,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/stdc++.h:54,
from /tmp/compiler_xvbnm5gx/src:1:
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/stl_iterator.h:415:5: 附注：candidate: ‘template<class _IteratorL, class _IteratorR> decltype ((__y.base() - __x.base())) std::operator-(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)’
415 | operator-(const reverse_iterator<_IteratorL>& __x,
| ^~~~~~~~
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/stl_iterator.h:415:5: 附注： template argument deduction/substitution failed:
/tmp/compiler_xvbnm5gx/src:22:50: 附注： ‘std::map<int, int, std::greater<int> >::iterator’ {aka ‘std::_Rb_tree_iterator<std::pair<const int, int> >’} is not derived from ‘const std::reverse_iterator<_Iterator>’
22 | for(map<int,int>::iterator it=dict.end()-1;it!=dict.begin();it++)
| ^
In file included from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/stl_algobase.h:67,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/char_traits.h:39,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ios:40,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/istream:38,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/sstream:38,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:45,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ccomplex:39,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/stdc++.h:54,
from /tmp/compiler_xvbnm5gx/src:1:
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/stl_iterator.h:1212:5: 附注：candidate: ‘template<class _IteratorL, class _IteratorR> decltype ((__x.base() - __y.base())) std::operator-(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)’
1212 | operator-(const move_iterator<_IteratorL>& __x,
| ^~~~~~~~
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/stl_iterator.h:1212:5: 附注： template argument deduction/substitution failed:
/tmp/compiler_xvbnm5gx/src:22:50: 附注： ‘std::map<int, int, std::greater<int> >::iterator’ {aka ‘std::_Rb_tree_iterator<std::pair<const int, int> >’} is not derived from ‘const std::move_iterator<_IteratorL>’
22 | for(map<int,int>::iterator it=dict.end()-1;it!=dict.begin();it++)
| ^
In file included from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ccomplex:39,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/stdc++.h:54,
from /tmp/compiler_xvbnm5gx/src:1:
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:357:5: 附注：candidate: ‘template<class _Tp> std::complex<_Tp> std::operator-(const std::complex<_Tp>&, const std::complex<_Tp>&)’
357 | operator-(const complex<_Tp>& __x, const complex<_Tp>& __y)
| ^~~~~~~~
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:357:5: 附注： template argument deduction/substitution failed:
/tmp/compiler_xvbnm5gx/src:22:50: 附注： ‘std::map<int, int, std::greater<int> >::iterator’ {aka ‘std::_Rb_tree_iterator<std::pair<const int, int> >’} is not derived from ‘const std::complex<_Tp>’
22 | for(map<int,int>::iterator it=dict.end()-1;it!=dict.begin();it++)
| ^
In file included from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ccomplex:39,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/stdc++.h:54,
from /tmp/compiler_xvbnm5gx/src:1:
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:366:5: 附注：candidate: ‘template<class _Tp> std::complex<_Tp> std::operator-(const std::complex<_Tp>&, const _Tp&)’
366 | operator-(const complex<_Tp>& __x, const _Tp& __y)
| ^~~~~~~~
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:366:5: 附注： template argument deduction/substitution failed:
/tmp/compiler_xvbnm5gx/src:22:50: 附注： ‘std::map<int, int, std::greater<int> >::iterator’ {aka ‘std::_Rb_tree_iterator<std::pair<const int, int> >’} is not derived from ‘const std::complex<_Tp>’
22 | for(map<int,int>::iterator it=dict.end()-1;it!=dict.begin();it++)
| ^
In file included from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ccomplex:39,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/stdc++.h:54,
from /tmp/compiler_xvbnm5gx/src:1:
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:375:5: 附注：candidate: ‘template<class _Tp> std::complex<_Tp> std::operator-(const _Tp&, const std::complex<_Tp>&)’
375 | operator-(const _Tp& __x, const complex<_Tp>& __y)
| ^~~~~~~~
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:375:5: 附注： template argument deduction/substitution failed:
/tmp/compiler_xvbnm5gx/src:22:50: 附注： mismatched types ‘const std::complex<_Tp>’ and ‘int’
22 | for(map<int,int>::iterator it=dict.end()-1;it!=dict.begin();it++)
| ^
In file included from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ccomplex:39,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/stdc++.h:54,
from /tmp/compiler_xvbnm5gx/src:1:
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:452:5: 附注：candidate: ‘template<class _Tp> std::complex<_Tp> std::operator-(const std::complex<_Tp>&)’
452 | operator-(const complex<_Tp>& __x)
| ^~~~~~~~
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/complex:452:5: 附注： template argument deduction/substitution failed:
/tmp/compiler_xvbnm5gx/src:22:50: 附注： ‘std::map<int, int, std::greater<int> >::iterator’ {aka ‘std::_Rb_tree_iterator<std::pair<const int, int> >’} is not derived from ‘const std::complex<_Tp>’
22 | for(map<int,int>::iterator it=dict.end()-1;it!=dict.begin();it++)
| ^
In file included from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/deque:67,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/stdc++.h:68,
from /tmp/compiler_xvbnm5gx/src:1:
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/stl_deque.h:370:5: 附注：candidate: ‘template<class _Tp, class _Ref, class _Ptr> typename std::_Deque_iterator<_Tp, _Ref, _Ptr>::difference_type std::operator-(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)’
370 | operator-(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
| ^~~~~~~~
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/stl_deque.h:370:5: 附注： template argument deduction/substitution failed:
/tmp/compiler_xvbnm5gx/src:22:50: 附注： ‘std::map<int, int, std::greater<int> >::iterator’ {aka ‘std::_Rb_tree_iterator<std::pair<const int, int> >’} is not derived from ‘const std::_Deque_iterator<_Tp, _Ref, _Ptr>’
22 | for(map<int,int>::iterator it=dict.end()-1;it!=dict.begin();it++)
| ^
In file included from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/deque:67,
from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/stdc++.h:68,
from /tmp/compiler_xvbnm5gx/src:1:
/nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.
...
```
by Sprague_Garundy @ 2022-11-22 20:00:04
@[Sprague_Garundy](/user/764746) 我知道了。应该是第 22 行出现了问题。我本机不知道咋通过编译的，神奇……
by sunyizhe @ 2022-11-22 20:04:36
感谢 @[Sprague_Garundy](/user/764746) 大佬！
本贴完结!
by sunyizhe @ 2022-11-22 20:08:20
@[sunyizhe](/user/481330) 因为系统不同，Windows 和 NOI Linux 2.0 和外国其他系统的运行方式&评测方式不同。
by _H17_ @ 2022-11-22 20:12:29