View Compilation Error

0_0_15577376_24548.cpp: In function 'void manacher(int)':
0_0_15577376_24548.cpp:13:45: error: 'min' was not declared in this scope
         len[i]=r<q?0:min(r-q+1,len[(j<<1)-i]);
                                             ^
0_0_15577376_24548.cpp: In function 'int main()':
0_0_15577376_24548.cpp:23:18: error: 'scanf' was not declared in this scope
     scanf("%d",&t);
                  ^
0_0_15577376_24548.cpp:33:29: error: 'sort' was not declared in this scope
         sort(num+1,num+n,cmp);
                             ^
0_0_15577376_24548.cpp:44:39: error: 'printf' was not declared in this scope
         printf("Case #%d: %d\n",kk,ans);
                                       ^