Compilare: user.cpp: In function ‘int main()’: user.cpp:109:27: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if ((j>>h)&1==1) curhash=f(curhash+v[e[h+1]-1]); ^ user.cpp:106:17: warning: unused variable ‘p’ [-Wunused-variable] int p=0,curhash=0; ^ user.cpp:76:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("superp.in","r",stdin); ^ user.cpp:77:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("superp.out","w",stdout); ^ user.cpp:79:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); v[0]=1; ^ user.cpp:100:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&x); int l=0; ll sol=0; ^