View Compilation Error

0_0_29369724_5693.cpp: In function 'int main()':
0_0_29369724_5693.cpp:70:31: error: invalid initialization of reference of type 'int&' from expression of type 'long long int'
             int &idu=id[l[i].i],&idv=id[l[i].j];
                               ^
0_0_29369724_5693.cpp:70:47: error: invalid initialization of reference of type 'int&' from expression of type 'long long int'
             int &idu=id[l[i].i],&idv=id[l[i].j];
                                               ^