foo.cpp: In function 'int main()':
foo.cpp:7:34: error: 'time' was not declared in this scope
     scanf("%d%d%d",&point,&dist,&time);
                                  ^
foo.cpp:7:38: error: 'scanf' was not declared in this scope
     scanf("%d%d%d",&point,&dist,&time);
                                      ^
foo.cpp:35:12: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
     if (f=0) cout<<"No"<<endl;
            ^
foo.cpp:36:19: error: 'system' was not declared in this scope
     system("pause");
                   ^