Compilare: main.cpp: In function 'int main()': main.cpp:46:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j+pas<nodes.size() && nodes[j+pas]<=z) ~~~~~^~~~~~~~~~~~~ main.cpp:55:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j+pas<nodes.size() && nodes[j+pas]<=z) ~~~~~^~~~~~~~~~~~~ main.cpp:24:25: warning: unused variable 'd' [-Wunused-variable] int n,m,p,i,j,z,pas,d,cj,mask,ct,aux_prod; ^ main.cpp:24:27: warning: unused variable 'cj' [-Wunused-variable] int n,m,p,i,j,z,pas,d,cj,mask,ct,aux_prod; ^~ main.cpp:24:38: warning: unused variable 'aux_prod' [-Wunused-variable] int n,m,p,i,j,z,pas,d,cj,mask,ct,aux_prod; ^~~~~~~~ main.cpp:25:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("treegcd.in","r",stdin); ^ main.cpp:26:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("treegcd.out","w",stdout); ^ main.cpp:27:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:29:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x[i],&y[i]); ^