Run id: 83980

Main.cc: In function 'int main()':
Main.cc:5:13: error: expected primary-expression before ';' token
     cin>>n>>;m
             ^
Main.cc:6:5: error: expected ';' before 'cout'
     cout<<(m+n)*(m-(n-1))/2;
     ^
Main.cc:6:28: warning: statement has no effect [-Wunused-value]
     cout<<(m+n)*(m-(n-1))/2;
                            ^