0_0_36743265_6132.cpp:19:41: error: wrong number of template arguments (0, should be 1)
priority_queue<PII, vector<PII>, greater<>> q;
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:48:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
from 0_0_36743265_6132.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_function.h:358:12: error: provided for 'template<class _Tp> struct std::greater'
struct greater : public binary_function<_Tp, _Tp, bool>
^
0_0_36743265_6132.cpp:19:42: error: template argument 3 is invalid
priority_queue<PII, vector<PII>, greater<>> q;
^
0_0_36743265_6132.cpp:19:46: error: invalid type in declaration before ';' token
priority_queue<PII, vector<PII>, greater<>> q;
^
0_0_36743265_6132.cpp: In function 'int main()':
0_0_36743265_6132.cpp:41:18: error: request for member 'empty' in 'q', which is of non-class type 'int'
while(!q.empty()) q.pop();
^
0_0_36743265_6132.cpp:41:29: error: request for member 'pop' in 'q', which is of non-class type 'int'
while(!q.empty()) q.pop();
^
0_0_36743265_6132.cpp:56:15: error: request for member 'push' in 'q', which is of non-class type 'int'
q.push(r);
^
0_0_36743265_6132.cpp:61:17: error: request for member 'top' in 'q', which is of non-class type 'int'
PII t=q.top();
^
0_0_36743265_6132.cpp:62:11: error: request for member 'pop' in 'q', which is of non-class type 'int'
q.pop();
^
0_0_36743265_6132.cpp:63:18: error: request for member 'empty' in 'q', which is of non-class type 'int'
while(!q.empty()&& find(t.y.x)==find(t.y.y)){
^
0_0_36743265_6132.cpp:64:17: error: request for member 'top' in 'q', which is of non-class type 'int'
t=q.top();
^
0_0_36743265_6132.cpp:65:15: error: request for member 'pop' in 'q', which is of non-class type 'int'
q.pop();
^
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