Compilare: user.cpp: In function ‘int main()’: user.cpp:35:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(indi<v[i].size()&&indj<v[j].size()){ ^ user.cpp:35:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(indi<v[i].size()&&indj<v[j].size()){ ^ user.cpp:52:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(indi<v[i].size()&&v[i][indi]-inter[k-1]<mini) ^ user.cpp:54:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(indj<v[j].size()&&v[j][indj]-inter[k-1]<mini) ^ user.cpp:9:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("qvect.in","r",stdin); ^ user.cpp:10:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("qvect.out","w",stdout); ^ user.cpp:11:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&q); ^ user.cpp:13:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&nrel[i]); ^ user.cpp:15:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp:21:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&t,&i,&j); ^