Compilare: main.cpp: In constructor 'node::node(T)': main.cpp:8:12: warning: 'node::s' will be initialized after [-Wreorder] int w, s, rev = 0; ^ main.cpp:7:7: warning: 'T node::v' [-Wreorder] T v; ^ main.cpp:11:5: warning: when initialized here [-Wreorder] node(T _v) : s(1), v(_v), sum(_v), w(rand()) {}; ^~~~ main.cpp:9:21: warning: 'node::sum' will be initialized after [-Wreorder] long long sum = 0; ^ main.cpp:8:9: warning: 'int node::w' [-Wreorder] int w, s, rev = 0; ^ main.cpp:11:5: warning: when initialized here [-Wreorder] node(T _v) : s(1), v(_v), sum(_v), w(rand()) {}; ^~~~ main.cpp: In function 'int main()': main.cpp:99:9: warning: unused variable 'n' [-Wunused-variable] int n, q, s = 0, a, b; ^ main.cpp:99:15: warning: unused variable 's' [-Wunused-variable] int n, q, s = 0, a, b; ^