Eroare de compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:38:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < A[t].size(); ++i) { ^ user.cpp:41:17: error: no match for ‘operator=’ (operand types are ‘__gnu_cxx::__alloc_traits<std::allocator<nod> >::value_type {aka nod}’ and ‘int’) A[t][i] = 0; ^ user.cpp:41:17: note: candidates are: user.cpp:7:8: note: nod& nod::operator=(const nod&) struct nod{ ^ user.cpp:7:8: note: no known conversion for argument 1 from ‘int’ to ‘const nod&’ user.cpp:7:8: note: nod& nod::operator=(nod&&) user.cpp:7:8: note: no known conversion for argument 1 from ‘int’ to ‘nod&&’ user.cpp:39:13: warning: unused variable ‘p’ [-Wunused-variable] int p = b.size() - A[t][i].question - 1; ^ user.cpp:45:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < a[t].size(); ++i) ^ user.cpp: In function ‘void read()’: user.cpp:21:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ", &n, &m); ^ user.cpp:24:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &x); ^ user.cpp:31:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ", &node[i], &k[i]); ^ user.cpp: In function ‘int main()’: user.cpp:59:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("stramosi.in", "r", stdin); ^ user.cpp:60:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("stramosi.out", "w", stdout); ^