foo.cpp: In function 'int main()':
foo.cpp:32:20: error: 'abs' was not declared in this scope
 if(time>=(abs(cx-mx)+abs(cy-my)+mx+1)){
                    ^
foo.cpp:5:11: warning: unused variable 'T' [-Wunused-variable]
 int cx,cy,T,m,n,i,j,mx,my,time,get;
           ^