Eroare de compilare: user.cpp:11:16: error: ‘int log2 [200002]’ redeclared as different kind of symbol int log2[200002]; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/cstdio:41, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:146:1: error: previous declaration of ‘double log2(double)’ __MATHCALL (log2,, (_Mdouble_ __x)); ^ user.cpp: In function ‘void dfs(int, int)’: user.cpp:18:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); ++ i) { ^ user.cpp: In function ‘int main()’: user.cpp:57:15: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript log2[i] = log2[i / 2] + 1; ^ user.cpp:57:29: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript log2[i] = log2[i / 2] + 1; ^ user.cpp:69:27: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript l = log2[y - x + 1]; ^ user.cpp:27:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lca.in", "r", stdin); ^ user.cpp:28:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lca.out", "w", stdout); ^ user.cpp:31:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &t); ^ user.cpp:35:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.cpp:62:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^