View Compilation Error

0_0_17236366_23977.cpp: In function 'int main()':
0_0_17236366_23977.cpp:36:28: error: 'memset' was not declared in this scope
         memset(C,0,sizeof C);
                            ^
0_0_17236366_23977.cpp:60:19: error: 'sort' was not declared in this scope
         sort(p,p+m);
                   ^