View Compilation Error

0_0_37651087_30759.cpp: In function 'void solve()':
0_0_37651087_30759.cpp:60:23: error: no match for 'operator=' (operand types are 'node' and '<brace-enclosed initializer list>')
                     ft={i,j,0,0};
                       ^
0_0_37651087_30759.cpp:60:23: note: candidates are:
0_0_37651087_30759.cpp:11:8: note: node& node::operator=(const node&)
 struct node{
        ^
0_0_37651087_30759.cpp:11:8: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const node&'
0_0_37651087_30759.cpp:11:8: note: node& node::operator=(node&&)
0_0_37651087_30759.cpp:11:8: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'node&&'