foo.cc: In function 'void push(int, int, int, int)':
foo.cc:40:16: error: reference to 'hash' is ambiguous
40 | if(vis[hash(x,y)])return;
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc:41:13: error: reference to 'hash' is ambiguous
41 | vis[hash(x,y)]=1;
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc:42:11: error: reference to 'hash' is ambiguous
42 | d[hash(x,y)]=d[hash(a,b)]+1;
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc:42:24: error: reference to 'hash' is ambiguous
42 | d[hash(x,y)]=d[hash(a,b)]+1;
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc: In function 'void bfs()':
foo.cc:48:35: error: reference to 'hash' is ambiguous
48 | int x=c.x,y=c.y,u=hash(x,y);
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc:64:31: error: reference to 'hash' is ambiguous
64 | int v=hash(e1[i].x,e1[i].y);
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc:71:31: error: reference to 'hash' is ambiguous
71 | int v=hash(e1[i].x,e1[i].y);
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc:78:31: error: reference to 'hash' is ambiguous
78 | int v=hash(e2[i].x,e2[i].y);
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc:85:31: error: reference to 'hash' is ambiguous
85 | int v=hash(e2[i].x,e2[i].y);
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc: In function 'int main()':
foo.cc:96:11: error: reference to 'hash' is ambiguous
96 | d[hash(sx,sy)]=0;
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc:97:13: error: reference to 'hash' is ambiguous
97 | vis[hash(sx,sy)]=1;
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
foo.cc:100:21: warning: unused variable 'a' [-Wunused-variable]
100 | int a,b;
| ^
foo.cc:100:23: warning: unused variable 'b' [-Wunused-variable]
100 | int a,b;
| ^
foo.cc:116:23: error: reference to 'hash' is ambiguous
116 | int v=hash(ex[i].x,ex[i].y);
| ^~~~
In file included from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/basic_string.h:6860,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/string:55,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/locale_classes.h:40,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/ios_base.h:41,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ios:42,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/istream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/sstream:38,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/complex:45,
from /nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/ccomplex:39,
from stdc++.h:54:
/nix/store/l4dvshb0bw0ipyx17f6rknzk83mdx81y-gcc-11.3.0/include/c++/11.3.0/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
59 | struct hash;
| ^~~~
foo.cc:30:5: note: 'int hash(int, int)'
30 | int hash(int x,int y){
| ^~~~
