Eroare de compilare: main.cpp: In function 'void dfs(int)': main.cpp:12:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < v[nod].size(); ++j) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < tr[nod].size(); ++j) ~~^~~~~~~~~~~~~~~~ main.cpp: At global scope: main.cpp:28:18: error: 'bool kill [1000002]' redeclared as different kind of symbol bool kill[1000002], skip[1000002]; ^ In file included from /usr/include/c++/6/csignal:42:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:43, from main.cpp:1: /usr/include/signal.h:127:12: note: previous declaration 'int kill(__pid_t, int)' extern int kill (__pid_t __pid, int __sig) __THROW; ^~~~ main.cpp: In function 'int main()': main.cpp:52:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < cc[i].size(); ++j) ~~^~~~~~~~~~~~~~ main.cpp:63:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < cc[i].size(); j += 2) ~~^~~~~~~~~~~~~~ main.cpp:67:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j < cc[i].size(); j += 2) ~~^~~~~~~~~~~~~~ main.cpp:71:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = position; j < cc[i].size(); j += 2) ~~^~~~~~~~~~~~~~ main.cpp:72:34: warning: pointer to a function used in arithmetic [-Wpointer-arith] kill[cc[i][j]] = 1; ^ main.cpp:72:38: error: assignment of read-only location '*(kill + ((sizetype)cc[i].std::vector<_Tp, _Alloc>::operator[]<int, std::allocator<int> >(((std::vector<int>::size_type)j))))' kill[cc[i][j]] = 1; ^ main.cpp:72:38: error: cannot convert 'int' to 'int(__pid_t, int) throw () {aka int(int, int) throw ()}' in assignment main.cpp:80:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < cc[i].size(); j += 2) ~~^~~~~~~~~~~~~~ main.cpp:84:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int start = 2; start < cc[i].size(); start += 2) ~~~~~~^~~~~~~~~~~~~~ main.cpp:88:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lst >= cc[i].size()) ~~~~^~~~~~~~~~~~~~~ main.cpp:96:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j < cc[i].size(); j += 2) ~~^~~~~~~~~~~~~~ Non zero exit status: 1