Main.cc: In function 'int main()':
Main.cc:6:8: error: 'n' was not declared in this scope
cin>>n;
^
Main.cc:8:6: warning: statement has no effect [-Wunused-value]
mx==tzz;
^
Main.cc:11:6: warning: statement has no effect [-Wunused-value]
mn+ tzz;
^