Compilare: main.cpp: In function 'int main()': main.cpp:48:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(register int i=0;i<v.size();i++) ~^~~~~~~~~ main.cpp:51:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(register int j=i+1;j<v.size();j++) ~^~~~~~~~~ main.cpp:56:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(register int j=1;j<pante.size();j++) ~^~~~~~~~~~~~~ main.cpp:36:16: warning: unused variable 'y' [-Wunused-variable] int n,x1,x,y; ^ main.cpp:34:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("coliniare.in","r",stdin); ^ main.cpp:35:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("coliniare.out","w",stdout); ^ main.cpp:37:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:41:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&x1); ^