Eroare de compilare: user.cpp:13:48: error: ‘bitset’ does not name a type vector<int> g[DIM], st, whc[DIM], sol, e[DIM]; bitset<DIM> ma; ^ user.cpp: In function ‘void dfs1(int, int)’: user.cpp:20:22: error: ‘ma’ was not declared in this scope st.push_back(x); ma[x] = 1; ^ user.cpp: In function ‘void dfs2(int, int)’: user.cpp:42:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( x < bcc.size() ) { // x is a biconnected component ^ user.cpp:51:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0, ok = 1; i < bcc[x].size(); i ++, ok = 1 ) { ^ user.cpp: In function ‘void dfs3(int, int, int)’: user.cpp:76:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( x < bcc.size() ) { ^ user.cpp:77:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < bcc[x].size(); i ++ ) { ^ user.cpp: In function ‘int main(int, const char**)’: user.cpp:115:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < bcc.size(); i ++ ) { ^ user.cpp:116:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < bcc[i].size(); j ++ ) { ^ user.cpp:117:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int k = 0; k < bcc[i].size(); k ++ ) { ^