Compilare: user.cpp: In function ‘int main()’: user.cpp:74:22: warning: left operand of comma operator has no effect [-Wunused-value] for(int i=1,j=1;i<=n,j<=m;) ^ user.cpp:48:9: warning: unused variable ‘c’ [-Wunused-variable] int c=0,ii,jj; ^ user.cpp:48:13: warning: unused variable ‘ii’ [-Wunused-variable] int c=0,ii,jj; ^ user.cpp:48:16: warning: unused variable ‘jj’ [-Wunused-variable] int c=0,ii,jj; ^ user.cpp:51:9: warning: variable ‘mas’ set but not used [-Wunused-but-set-variable] int mas=0; ^