Compilare: main.cpp: In function 'int main()': main.cpp:42:15: warning: unused variable 'a' [-Wunused-variable] int n, q, a, b, c, d, u, v; ^ main.cpp:42:18: warning: unused variable 'b' [-Wunused-variable] int n, q, a, b, c, d, u, v; ^ main.cpp:42:21: warning: unused variable 'c' [-Wunused-variable] int n, q, a, b, c, d, u, v; ^ main.cpp:42:24: warning: unused variable 'd' [-Wunused-variable] int n, q, a, b, c, d, u, v; ^