View Compilation Error

0_0_30430633_32102.cpp: In function 'int main()':
0_0_30430633_32102.cpp:115:27: error: invalid initialization of reference of type 'int&' from expression of type 'll {aka long long int}'
             scan_d(e1[i].w);
                           ^
0_0_30430633_32102.cpp:80:13: note: in passing argument 1 of 'bool scan_d(int&)'
 inline bool scan_d(int &ret)
             ^