View Compilation Error

0_0_22121275_1769.cpp: In function 'int main()':
0_0_22121275_1769.cpp:123:16: error: no match for 'operator=' (operand types are '__gnu_cxx::__alloc_traits<std::allocator<edge> >::value_type {aka edge}' and 'int')
 es[i^1]=es[i^1]=0;
                ^
0_0_22121275_1769.cpp:123:16: note: candidates are:
0_0_22121275_1769.cpp:21:8: note: edge& edge::operator=(const edge&)
 struct edge
        ^
0_0_22121275_1769.cpp:21:8: note:   no known conversion for argument 1 from 'int' to 'const edge&'
0_0_22121275_1769.cpp:21:8: note: edge& edge::operator=(edge&&)
0_0_22121275_1769.cpp:21:8: note:   no known conversion for argument 1 from 'int' to 'edge&&'