View Compilation Error

0_0_33564721_24526.cpp: In function 'int main(int, const char**)':
0_0_33564721_24526.cpp:9:9: error: 'cin' was not declared in this scope
     for(cin>>nCase;nCase--;){
         ^
0_0_33564721_24526.cpp:10:32: error: 'scanf' was not declared in this scope
         scanf("%d%d%d",&n,&m,&q);
                                ^
0_0_33564721_24526.cpp:19:28: error: 'min' was not declared in this scope
                 le=min(le,x);
                            ^
0_0_33564721_24526.cpp:21:28: error: 'max' was not declared in this scope
                 ri=max(ri,x);
                            ^
0_0_33564721_24526.cpp:55:30: error: 'printf' was not declared in this scope
             printf("%d\n",ans);
                              ^