Eroare de compilare: main.cpp: In function 'int main()': main.cpp:60:14: error: expected unqualified-id before '[' token auto [cost, node_a, node_b] = pq.top(); pq.pop(); ^ main.cpp:61:26: error: 'node_a' was not declared in this scope if (find(parent, node_a) == find(parent, node_b)) { ^~~~~~ main.cpp:61:51: error: 'node_b' was not declared in this scope if (find(parent, node_a) == find(parent, node_b)) { ^~~~~~ main.cpp:65:34: error: 'node_a' was not declared in this scope union_find(rank, parent, node_a, node_b); ^~~~~~ main.cpp:65:42: error: 'node_b' was not declared in this scope union_find(rank, parent, node_a, node_b); ^~~~~~ main.cpp:67:23: error: 'cost' was not declared in this scope final_cost += cost; ^~~~ main.cpp:72:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ret.size(); ++i) { ~~^~~~~~~~~~~~ Non zero exit status: 1