Eroare de compilare: user.cpp:30:20: error: ‘int index [2012]’ redeclared as different kind of symbol int index[MAX_N + 5]; ^ In file included from /usr/include/c++/6/cstring:42:0, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:48, from user.cpp:1: /usr/include/string.h:477:1: note: previous declaration ‘const char* index(const char*, int)’ index (const char *__s, int __c) __THROW ^~~~~ user.cpp: In function ‘void solve(int, int, int)’: user.cpp:73:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < ans[nod].size(); ++i) { ~~^~~~~~~~~~~~~~~~~ user.cpp:74:24: error: invalid types ‘<unresolved overloaded function type>[__gnu_cxx::__alloc_traits<std::allocator<int> >::value_type {aka int}]’ for array subscript index[ans[nod][i]] = i; ^ user.cpp:83:37: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript if ((i & (1 << index[e[it].a])) == 0 && (i & (1 << index[e[it].b])) == 0) { ^ user.cpp:83:74: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript if ((i & (1 << index[e[it].a])) == 0 && (i & (1 << index[e[it].b])) == 0) { ^ user.cpp:90:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < ans[nod].size(); ++j) ~~^~~~~~~~~~~~~~~~~ user.cpp:95:42: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript c += dp[it][(i & (1 << index[it])) != 0] - ((i & (1 << index[it])) != 0) * cost[it]; ^ user.cpp:95:74: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript c += dp[it][(i & (1 << index[it])) != 0] - ((i & (1 << index[it])) != 0) * cost[it]; ^ user.cpp: In function ‘void getSol(int, int, int, int)’: user.cpp:118:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < ans[nod].size(); ++i) ~~^~~~~~~~~~~~~~~~~ user.cpp:119:24: error: invalid types ‘<unresolved overloaded function type>[__gnu_cxx::__alloc_traits<std::allocator<int> >::value_type {aka int}]’ for array subscript index[ans[nod][i]] = i; ^ user.cpp:120:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < ans[nod].size(); ++i) ~~^~~~~~~~~~~~~~~~~ user.cpp:125:46: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript getSol(it, node, (st & (1 << index[it])) != 0, 0); ^ user.cpp: In function ‘int main()’: user.cpp:163:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto it = 0; it < ans.size(); ++it) { ~~~^~~~~~~~~~~~ user.cpp:143:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ro.in", "r", stdin);