Compilare: main.cpp: In function 'int update(int, int, int)': main.cpp:31:1: warning: no return statement in function returning non-void [-Wreturn-type] 31 | } | ^ main.cpp: In function 'int main()': main.cpp:37:18: warning: unused variable 'j' [-Wunused-variable] 37 | int n, q, i, j, a, b, c, val; | ^