Codeforces Round #181 (Div. 2) A. Array
#include <iostream> #include <vector> #include <cstdio> using namespace std; int main(){ int n; cin >> n; vector<int> neg,zero,pos; int a; for(int i = 0; i < n; i ++ ) { cin >>a; if(a > 0) pos.push_back(a); else if(a < 0) neg.push_back(a); else zero.push_back(a); } if(pos.size() == 0 ){ pos.push_back(neg.back()); neg.pop_back(); pos.push_back(neg.back()); neg.pop_back(); } if(neg.size()%2 == 0){ zero.push_back(neg.back()); neg.pop_back(); } cout << neg.size(); for(int i = 0; i < neg.size();i ++ ) cout<<" "<<neg[i]; cout<<endl; cout<< pos.size(); for(int i = 0; i < pos.size();i ++ ) cout<<" "<<pos[i]; cout<<endl; cout<< zero.size(); for(int i = 0; i < zero.size();i ++ ) cout<<" "<<zero[i]; cout<<endl; return 0; }