Compilare: main.cpp: In function 'int main()': main.cpp:45:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j+pas<nodes.size() && nodes[j+pas]<=z) ~~~~~^~~~~~~~~~~~~ main.cpp:54:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j+pas<nodes.size() && nodes[j+pas]<=z) ~~~~~^~~~~~~~~~~~~ main.cpp:85:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ct=0; ct<fact.size(); ct++) ~~^~~~~~~~~~~~ main.cpp:24:36: 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:25:38: 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:26:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:28:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x[i],&y[i]); ^