Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:11:25: error: too few arguments to function ‘FILE* freopen(const char*, const char*, FILE*)’ freopen("lantaditiv.in"); ^ In file included from /usr/include/c++/4.8/cstdio:42:0, from /usr/include/c++/4.8/ext/string_conversions.h:43, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/stdio.h:279:14: note: declared here extern FILE *freopen (__const char *__restrict __filename, ^ user.cpp:12:26: error: too few arguments to function ‘FILE* freopen(const char*, const char*, FILE*)’ freopen("lantaditiv.out"); ^ In file included from /usr/include/c++/4.8/cstdio:42:0, from /usr/include/c++/4.8/ext/string_conversions.h:43, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/stdio.h:279:14: note: declared here extern FILE *freopen (__const char *__restrict __filename, ^ user.cpp:29:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<ans.size(); ++i) cout << ans[i] << " "; ^