#include <cstdio>

 const int N = ;

 int a[N];

 int main() {

     int n, sum = ;

     scanf("%d", &n);

     for(int i = ; i <= n; i++) {

         scanf("%d", &a[i]);

         sum ^= a[i];

     }

     if(!sum) {

         printf("lose");

         return ;

     }

     for(int i = ; i <= n; i++) {

         if((a[i] ^ sum) <= a[i]) {

             printf("%d %d\n", a[i] - (a[i] ^ sum), i);

             a[i] = a[i] ^ sum;

             break;

         }

     }

     for(int i = ; i <= n; i++) {

         printf("%d ", a[i]);

     }

     return ;

 }