Compilare: main.cpp: In function 'int Add(int&, int, int, int, int, int)': main.cpp:56:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:67:18: warning: unused variable 'prv' [-Wunused-variable] int sol = 0, prv = 0; ^~~ main.cpp:60:70: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d%d%d", &r1, &c1, &r2, &c2, &r3, &c3, &r4, &c4); ^