View Compilation Error

0_0_30144124_25649.cpp: In function 'void pushup(int)':
0_0_30144124_25649.cpp:28:51: error: 'min' was not declared in this scope
    tr[rt].minv=min(tr[rt<<1].minv,tr[rt<<1|1].minv);
                                                   ^
0_0_30144124_25649.cpp:28:51: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_30144124_25649.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3444:5: note:   'std::min'
     min(initializer_list<_Tp> __l, _Compare __comp)
     ^
0_0_30144124_25649.cpp:29:51: error: 'max' was not declared in this scope
    tr[rt].maxv=max(tr[rt<<1].maxv,tr[rt<<1|1].maxv);
                                                   ^
0_0_30144124_25649.cpp:29:51: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_30144124_25649.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3454:5: note:   'std::max'
     max(initializer_list<_Tp> __l, _Compare __comp)
     ^