Main.cc:3:7: error: expected nested-name-specifier before 'mamespace'
using mamespace std;
^
Main.cc: In function 'int main()':
Main.cc:8:5: error: 'cout' was not declared in this scope
cout<& __os)
^
Main.cc:7:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%3d%1d",&a,&b);
^