View Compilation Error

0_0_21161208_28769.cpp: In function 'int main()':
0_0_21161208_28769.cpp:45:42: error: expected primary-expression before '(' token
             e[n+2*(i+1)-1].push_back(edge(n+,c));
                                          ^
0_0_21161208_28769.cpp:45:45: error: expected primary-expression before ',' token
             e[n+2*(i+1)-1].push_back(edge(n+,c));
                                             ^