Eroare de compilare: user.cpp:6:3: error: ‘typedef struct ffs ffs’ redeclared as different kind of symbol } ffs; ^ In file included from /usr/include/c++/5/cstring:42:0, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:48, from user.cpp:1: /usr/include/string.h:518:12: note: previous declaration ‘int ffs(int)’ extern int ffs (int __i) __THROW __attribute__ ((__const__)); ^ user.cpp:10:11: error: type/value mismatch at argument 1 in template parameter list for ‘template<class _Tp, class _Sequence> class std::queue’ queue <ffs> Q; ^ user.cpp:10:11: note: expected a type, got ‘ffs’ user.cpp:10:11: error: template argument 2 is invalid user.cpp: In function ‘void bfs()’: user.cpp:27:15: error: request for member ‘empty’ in ‘Q’, which is of non-class type ‘int’ while (!Q.empty()){ ^ user.cpp:28:21: error: request for member ‘front’ in ‘Q’, which is of non-class type ‘int’ int nod = Q.front().nod, pr = Q.front().pr, c = Q.front().cost; ^ user.cpp:29:11: error: request for member ‘pop’ in ‘Q’, which is of non-class type ‘int’ Q.pop(); ^ user.cpp:31:23: error: ‘pr’ was not declared in this scope if (it != pr && c < k && u[it] < 2){ ^ user.cpp:31:29: error: ‘c’ was not declared in this scope if (it != pr && c < k && u[it] < 2){ ^ user.cpp:32:19: error: request for member ‘push’ in ‘Q’, which is of non-class type ‘int’ Q.push({it, pr, c + 1}); ^ user.cpp: In function ‘int main()’: user.cpp:50:33: error: request for member ‘push’ in ‘Q’, which is of non-class type ‘int’ if (v[i].size() == 1) Q.push({i, i, 0}), u[i] = 1; ^ user.cpp: In function ‘void read(int&)’: user.cpp:19:58: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (++p == dim) fread(buff, 1, dim, stdin), p = 0; ^ user.cpp:22:58: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (++p == dim) fread(buff, 1, dim, stdin), p = 0; ^ user.cpp: In function ‘int main()’: user.cpp:40:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("statiuni.in","r", stdin); ^ user.cpp:41:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("statiuni.out","w", stdout);