View Compilation Error

0_0_33584694_23615.cpp: In function 'int main()':
0_0_33584694_23615.cpp:22:57: error: 'min' was not declared in this scope
                 dd[tot1++]=min(50-ditu[i].x,50-ditu[i].y);
                                                         ^
0_0_33584694_23615.cpp:56:79: error: 'min' was not declared in this scope
                             step[st[k]][j]=min(step[st[k]][j],step[st[k]][p]+1);
                                                                               ^