Eroare de compilare: user.cpp: In member function ‘convex convex::merge_convex(convex&)’: user.cpp:66:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<ans.v.size(); i++) ^ user.cpp: In member function ‘void ARBINT::make_tree(int, int, int)’: user.cpp:94:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<aint[nod].v.size(); i++) ^ user.cpp:108:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<aint[nod].v.size(); i++) ^ user.cpp:116:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<aint[nod].v.size(); i++) ^ user.cpp: In member function ‘bool ARBINT::query(int, int, int, int, int, line)’: user.cpp:132:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(mid == aint[nod].v.size() - 1)return false; ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&) [with _RandomAccessIterator = POINT*; _Tp = POINT]’: /usr/include/c++/4.8/bits/stl_algo.h:2307:70: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = POINT*]’ /usr/include/c++/4.8/bits/stl_algo.h:2338:54: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size) [with _RandomAccessIterator = POINT*; _Size = int]’ /usr/include/c++/4.8/bits/stl_algo.h:5475:36: required from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = POINT*]’ user.cpp:169:20: required from here /usr/include/c++/4.8/bits/stl_algo.h:2269:19: error: passing ‘const POINT’ as ‘this’ argument of ‘bool POINT::operator<(POINT)’ discards qualifiers [-fpermissive] while (__pivot < *__last) ^ user.cpp: In function ‘int main()’: user.cpp:159:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tri3.in", "r", stdin); ^ user.cpp:160:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tri3.out", "w", stdout); ^ user.cpp:162:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &Q); ^ user.cpp:166:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^ user.cpp:174:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &x1, &y1, &x2, &y2); ^