Eroare de compilare: user.cpp:10:1: error: expected initializer before ‘stack’ stack < int > sk; ^~~~~ user.cpp: In function ‘int main()’: user.cpp:17:9: error: ‘g’ was not declared in this scope g[x].pb(i); ^ user.cpp:25:12: error: ‘g’ was not declared in this scope if(g[i].size() & 1 && !g[i].empty()) ^ user.cpp:32:11: error: ‘g’ was not declared in this scope while(g[i].empty()) ^ user.cpp:34:5: error: ‘sk’ was not declared in this scope sk.push(i); ^~ user.cpp:38:13: error: ‘g’ was not declared in this scope if(!g[nod].empty()) ^ user.cpp:64:44: warning: unused variable ‘mat’ [-Wunused-variable] int af = mat[x][y][++mat[x][y][0]],mat[y][x][++mat[y][x][0]]; ^~~