View Compilation Error

0_0_35645452_31379.cpp: In function 'void push(int)':
0_0_35645452_31379.cpp:9:32: error: 'min' was not declared in this scope
  t[x].m=min(t[x*2].m,t[x*2+1].m);
                                ^
0_0_35645452_31379.cpp: In function 'int main()':
0_0_35645452_31379.cpp:75:20: error: 'scanf' was not declared in this scope
  scanf("%d%d",&n,&q);
                    ^
0_0_35645452_31379.cpp:89:23: error: 'printf' was not declared in this scope
    printf("%lld\n",cnt);
                       ^