Main.cc: In function ‘int main()’:
Main.cc:21:156: error: no matching function for call to ‘max(long double&, double)’
ans=max(ans,(1.0*(abs(a[bb].x-a[b].x)+abs(a[bb].y-a[b].y)))/(sqrt(1.0*(a[bb].x-a[b].x)*(a[bb].x-a[b].x)+1.0*(a[bb].y-a[b].y)*(a[bb].y-a[b].y))));
^
In file included from /usr/include/c++/7/bits/char_traits.h:39:0,
from /usr/include/c++/7/ios:40,
from /usr/include/c++/7/istream:38,
from /usr/include/c++/7/sstream:38,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from Main.cc:1:
/usr/include/c++/7/bits/stl_algobase.h:219:5: note: candidate: template const _Tp& std::max(const _Tp&, const _Tp&)
max(const _Tp& __a, const _Tp& __b)
^~~
/usr/include/c++/7/bits/stl_algobase.h:219:5: note: template argument deduction/substitution failed:
Main.cc:21:156: note: deduced conflicting types for parameter ‘const _Tp’ (‘long double’ and ‘double’)
ans=max(ans,(1.0*(abs(a[bb].x-a[b].x)+abs(a[bb].y-a[b].y)))/(sqrt(1.0*(a[bb].x-a[b].x)*(a[bb].x-a[b].x)+1.0*(a[bb].y-a[b].y)*(a[bb].y-a[b].y))));
^
In file included from /usr/include/c++/7/bits/char_traits.h:39:0,
from /usr/include/c++/7/ios:40,
from /usr/include/c++/7/istream:38,
from /usr/include/c++/7/sstream:38,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from Main.cc:1:
/usr/include/c++/7/bits/stl_algobase.h:265:5: note: candidate: template const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
max(const _Tp& __a, const _Tp& __b, _Compare __comp)
^~~
/usr/include/c++/7/bits/stl_algobase.h:265:5: note: template argument deduction/substitution failed:
Main.cc:21:156: note: deduced conflicting types for parameter ‘const _Tp’ (‘long double’ and ‘double’)
ans=max(ans,(1.0*(abs(a[bb].x-a[b].x)+abs(a[bb].y-a[b].y)))/(sqrt(1.0*(a[bb].x-a[b].x)*(a[bb].x-a[b].x)+1.0*(a[bb].y-a[b].y)*(a[bb].y-a[b].y))));
^
In file included from /usr/include/c++/7/algorithm:62:0,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
from Main.cc:1:
/usr/include/c++/7/bits/stl_algo.h:3462:5: note: candidate: template _Tp std::max(std::initializer_list<_Tp>)
max(initializer_list<_Tp> __l)
^~~
/usr/include/c++/7/bits/stl_algo.h:3462:5: note: template argument deduction/substitution failed:
Main.cc:21:156: note: mismatched types ‘std::initializer_list<_Tp>’ and ‘long double’
ans=max(ans,(1.0*(abs(a[bb].x-a[b].x)+abs(a[bb].y-a[b].y)))/(sqrt(1.0*(a[bb].x-a[b].x)*(a[bb].x-a[b].x)+1.0*(a[bb].y-a[b].y)*(a[bb].y-a[b].y))));
^
In file included from /usr/include/c++/7/algorithm:62:0,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
from Main.cc:1:
/usr/include/c++/7/bits/stl_algo.h:3468:5: note: candidate: template _Tp std::max(std::initializer_list<_Tp>, _Compare)
max(initializer_list<_Tp> __l, _Compare __comp)
^~~
/usr/include/c++/7/bits/stl_algo.h:3468:5: note: template argument deduction/substitution failed:
Main.cc:21:156: note: mismatched types ‘std::initializer_list<_Tp>’ and ‘long double’
ans=max(ans,(1.0*(abs(a[bb].x-a[b].x)+abs(a[bb].y-a[b].y)))/(sqrt(1.0*(a[bb].x-a[b].x)*(a[bb].x-a[b].x)+1.0*(a[bb].y-a[b].y)*(a[bb].y-a[b].y))));
^
Main.cc:23:30: warning: format ‘%lf’ expects argument of type ‘double’, but argument 2 has type ‘long double’ [-Wformat=]
printf("%.10lf\n",ans);
^
Main.cc:11:12: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
freopen("pair.in","r",stdin);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~
Main.cc:12:12: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
freopen("pair.out","w",stdout);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~