Compilare: user.cpp: In function ‘int main()’: user.cpp:31:16: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[i]<v[j]&&size[i]<1+size[j]||(size[i]==1+size[j]&&v[bef[i]]>v[j])) ^ user.cpp:19:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsir2.in","r",stdin); ^ user.cpp:20:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsir2.out","w",stdout); ^ user.cpp:22:25: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(f,1,MAX,stdin); ^