Run id: 139527

Main.cc: In function 'int a(int)':
Main.cc:9:22: error: 'n' was not declared in this scope
     for(int i=2;i*i<=n;i++){
                      ^
Main.cc:8:9: warning: unused variable 's' [-Wunused-variable]
     int s=0;
         ^
Main.cc: In function 'int main()':
Main.cc:21:13: error: 's' was not declared in this scope
             s++;
             ^
Main.cc:23:11: error: 's' was not declared in this scope
     cout<