Compilare: user.cpp: In function ‘void solve()’: user.cpp:77:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] va[++ va[0]] = rez % 10; ^ user.cpp:108:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] vb[++ vb[0]] = rez % 10; ^ user.cpp:63:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘void readFile()’: user.cpp:17:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lld%lld", &a, &b); ^