Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:61:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < edges.size(); i ++) { ^ user.cpp:73:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size(); i ++) ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:4: /usr/include/c++/4.8/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::pair<int, int>, int>*, std::vector<std::pair<std::pair<int, int>, int> > >; _Tp = std::pair<std::pair<int, int>, int>; _Compare = cmp]’: /usr/include/c++/4.8/bits/stl_algo.h:2319:78: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::pair<int, int>, int>*, std::vector<std::pair<std::pair<int, int>, int> > >; _Compare = cmp]’ /usr/include/c++/4.8/bits/stl_algo.h:2360:62: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::pair<int, int>, int>*, std::vector<std::pair<std::pair<int, int>, int> > >; _Size = int; _Compare = cmp]’ /usr/include/c++/4.8/bits/stl_algo.h:5513:44: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<std::pair<std::pair<int, int>, int>*, std::vector<std::pair<std::pair<int, int>, int> > >; _Compare = cmp]’ user.cpp:59:40: required from here /usr/include/c++/4.8/bits/stl_algo.h:2287:35: error: no match for call to ‘(cmp) (std::pair<std::pair<int, int>, int>&, const std::pair<std::pair<int, int>, int>&)’ while (__comp(*__first, __pivot)) ^ user.cpp:13:8: note: candidate is: struct cmp { ^ user.cpp:14:7: note: bool cmp::operator()(std::pair<std::pair<int, int>, int>&, std::pair<std::pair<int, int>, int>&) bool operator()(pair<pair<int,int>, int> &x, pair<pair<int,int>, int> &y) { ^ user.cpp:14:7: note: no known conversion for argument 2 from ‘const std::pair<std::pair<int, int>, int>’ to ‘std::pair<std::pair<int, int>, int>&’ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:4: /usr/include/c++/4.8/bits/stl_algo.h:2290:34: error: no match for call to ‘(cmp) (const std::pair<std::pair<int, int>, int>&, std::pair<std::pair<int, int>, int>&)’ while (__comp(__pivot, *__last)) ^ user.cpp:13:8: note: candidate is: struct cmp { ^ user.cpp:14:7: note: bool cmp::operator()(std::pair<std::pair<int, int>, int>&, std::pair<std::pair<int, int>, int>&) bool operator()(pair<pair<int,int>, int> &x, pair<pair<int,int>, int> &y) { ^ user.cpp:14:7: note: no known conversion for argument 1 from ‘const std::pair<std::pair<int, int>, int>’ to ‘std::pair<std::pair<int, int>, int>&’ user.cpp:44:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.in", "r", stdin); ^ user.cpp:45:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.out", "w", stdout); ^ user.cpp:47:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:55:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x, &y, &c); ^