View Compilation Error

0_0_38640549_17194.cpp: In function 'void solve()':
0_0_38640549_17194.cpp:54:20: error: no match for 'operator=' (operand types are 'node' and '<brace-enclosed initializer list>')
         e[i]={0,0,0},head[i]=match[i]=vis[i]=0;
                    ^
0_0_38640549_17194.cpp:15:8: note: candidate: 'constexpr node& node::operator=(const node&)'
 struct node{
        ^~~~
0_0_38640549_17194.cpp:15:8: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const node&'
0_0_38640549_17194.cpp:15:8: note: candidate: 'constexpr node& node::operator=(node&&)'
0_0_38640549_17194.cpp:15:8: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'node&&'