View Compilation Error

0_0_30031632_15089.cpp: In function 'int main()':
0_0_30031632_15089.cpp:17:50: error: 'max' was not declared in this scope
             ans=max(ans,1.0*(sum+t[i][2])/t[i][3]);
                                                  ^
0_0_30031632_15089.cpp:17:50: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_30031632_15089.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)
     ^
0_0_30031632_15089.cpp:21:1: error: expected '}' at end of input
 }
 ^