Compilare: user.cpp: In function ‘int main()’: user.cpp:53:13: warning: unused variable ‘l2’ [-Wunused-variable] int l2,c2; ^~ user.cpp:53:16: warning: unused variable ‘c2’ [-Wunused-variable] int l2,c2; ^~ user.cpp:16:40: warning: unused variable ‘y’ [-Wunused-variable] int n,l,c,i=0,j=0,cnt=0,x=1,prev=0,y=1; ^ user.cpp:49:9: warning: variable ‘s’ set but not used [-Wunused-but-set-variable] int s=0; ^ user.cpp:14:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rezervatie.in","r",stdin); ^ user.cpp:15:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rezervatie.out","w",stdout); ^