Compilare: user.cpp: In function ‘int main()’: user.cpp:19:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[rest].size();j++) ^ user.cpp:32:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[rest].size();j++) ^ user.cpp:45:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[rest].size();j++) ^ user.cpp:8:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hashuri.in", "r", stdin); ^ user.cpp:9:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hashuri.out", "w", stdout); ^ user.cpp:10:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:14:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&cer,&x); ^