View Compilation Error

0_0_18786433_8268.cpp: In function 'int main()':
0_0_18786433_8268.cpp:162:23: error: 'numeric_limits' was not declared in this scope
         long long m = numeric_limits<long long>::min();
                       ^
0_0_18786433_8268.cpp:162:38: error: expected primary-expression before 'long'
         long long m = numeric_limits<long long>::min();
                                      ^