Compilare: user.cpp: In function ‘int main()’: user.cpp:35:22: warning: left operand of comma operator has no effect [-Wunused-value] for(j=1;j<=k,ok==0;j++){ ^ user.cpp:11:41: warning: unused variable ‘d1’ [-Wunused-variable] int n,k,v[100001],v1[100001],i,j,ok,d1,d2,d,c,aux,s,smax,l1,l2,z,v2[100001],l,r,v3[100000]; ^ user.cpp:11:62: warning: unused variable ‘l1’ [-Wunused-variable] int n,k,v[100001],v1[100001],i,j,ok,d1,d2,d,c,aux,s,smax,l1,l2,z,v2[100001],l,r,v3[100000]; ^ user.cpp:11:65: warning: unused variable ‘l2’ [-Wunused-variable] int n,k,v[100001],v1[100001],i,j,ok,d1,d2,d,c,aux,s,smax,l1,l2,z,v2[100001],l,r,v3[100000]; ^ user.cpp:11:68: warning: unused variable ‘z’ [-Wunused-variable] int n,k,v[100001],v1[100001],i,j,ok,d1,d2,d,c,aux,s,smax,l1,l2,z,v2[100001],l,r,v3[100000]; ^ user.cpp:8:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pietre3.in","r",stdin); ^ user.cpp:9:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pietre3.out","w",stdout); ^