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GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/bits/stl_algobase.h: In function `const _Tp& std::max(const _Tp&, const _Tp&) [with _Tp = Ans]':
0_0_8710591_1161.cpp:100:   instantiated from here
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/bits/stl_algobase.h:177: error: no match for 'operator<' in '__a < __b'