Run id: 153003

Main.cc: In function 'int main()':
Main.cc:7:5: error: 'longlong' was not declared in this scope
     longlong n=a*10+b;
     ^
Main.cc:8:14: error: expected ';' before 'r'
     longlong r=n*n;
              ^
Main.cc:9:11: error: 'r' was not declared in this scope
     cout<