View Compilation Error

0_0_33274015_7709.cpp: In function 'int main()':
0_0_33274015_7709.cpp:53:38: error: invalid initialization of reference of type 'int&' from expression of type 'long long int'
                 ll tmp = f(i, j, c, g);
                                      ^
0_0_33274015_7709.cpp:27:4: note: in passing argument 3 of 'long long int f(int, int, int&, int&)'
 ll f(int x, int y, int &c, int &g){
    ^