Compilare: user.cpp: In function ‘long int solve(long int)’: user.cpp:58:22: warning: variable ‘v4’ set but not used [-Wunused-but-set-variable] long v0,v1,v2,v3,v4,ss1,ss2,jj,remiza=0; ^ user.cpp:58:29: warning: variable ‘ss2’ set but not used [-Wunused-but-set-variable] long v0,v1,v2,v3,v4,ss1,ss2,jj,remiza=0; ^ user.cpp: In function ‘int main()’: user.cpp:13:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("doipatru.in","rt",stdin); ^ user.cpp:14:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("doipatru.out","wt",stdout); ^ user.cpp:15:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld%ld",&n,&s); ^ user.cpp:19:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++){scanf("%ld",&j);nr[j]++;} ^