Compilare: user.cpp: In function ‘void BF(int)’: user.cpp:61:9: warning: unused variable ‘i’ [-Wunused-variable] int i,k; ^ user.cpp: In function ‘int main()’: user.cpp:41:12: warning: assuming signed overflow does not occur when assuming that (X - c) <= X is always true [-Wstrict-overflow] if(i>=1&&i<=n&&j>=1&&j<=m) ^ user.cpp:41:24: warning: assuming signed overflow does not occur when assuming that (X - c) <= X is always true [-Wstrict-overflow] if(i>=1&&i<=n&&j>=1&&j<=m) ^