Compilare: user.cpp: In function ‘int main()’: user.cpp:7:20: warning: unused variable ‘m’ [-Wunused-variable] int n,k,i,j=-1,m=0,x,l=0,l2=0,p; ^ user.cpp:7:30: warning: unused variable ‘l2’ [-Wunused-variable] int n,k,i,j=-1,m=0,x,l=0,l2=0,p; ^ user.cpp:5:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("romania.in","r",stdin); ^ user.cpp:6:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("romania.out","w",stdout); ^ user.cpp:8:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ user.cpp:11:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^