#pragma GCC optimize ("O3") #pragma GCC target ("avx") #include "bits/stdc++.h" // define macro "/D__MAI" using namespace std; typedef long long int ll; #define debugv(v) {printf("L%d %s => ",__LINE__,#v);for(auto e:v){cout< ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout< ostream& operator <<(ostream &o, const pair p) { o << "(" << p.first << ":" << p.second << ")"; return o; } mt19937 mt(8901016); inline int rand_int(int l, int h) { return uniform_int_distribution<>(l, h)(mt); } #ifdef __MAI #define getchar_unlocked getchar #define putchar_unlocked putchar #endif #ifdef __VSCC #define getchar_unlocked _getchar_nolock #define putchar_unlocked _putchar_nolock #endif namespace { #define isvisiablechar(c) (0x21<=(c)&&(c)<=0x7E) class MaiScanner { public: template void input_integer(T& var) { var = 0; T sign = 1; int cc = getchar_unlocked(); for (; cc<'0' || '9'>(int& var) { input_integer(var); return *this; } inline MaiScanner& operator>>(long long& var) { input_integer(var); return *this; } inline MaiScanner& operator>>(string& var) { int cc = getchar_unlocked(); for (; !isvisiablechar(cc); cc = getchar_unlocked()); for (; isvisiablechar(cc); cc = getchar_unlocked()) var.push_back(cc); } template void in(IT begin, IT end) { for (auto it = begin; it != end; ++it) *this >> *it; } }; } MaiScanner scanner; int n; vector aa; int dry() { int low = 0; int high = n - 1; int count = 0; while (low < high) { int val = aa[low] + aa[high]; if (val < 0) { count += 1; high -= 1; low += 1; } else if (val >= 0) { high -= 1; } } return count; } int wet() { int low = 0; int high = n - 1; int count = 0; while (low < high) { int val = aa[low] + aa[high]; if (val > 0) { count += 1; low += 1; high -= 1; } else if (val <= 0) { low += 1; } } return count; } int moist() { vector bucket(1+max(abs(aa[0]),abs(aa.back()))); int count = 0; for (int a : aa) { if (a < 0) { bucket[-a] += 1; } else if (a > 0) { if (bucket[a]) { count += 1; bucket[a] -= 1; } } else { if (++bucket[0] % 2 == 0) count += 1; } } return count; } int main() { scanner >> n; n*=2; aa.resize(n); scanner.in(ALL(aa)); sort(ALL(aa)); printf("%d %d %d\n", dry(), wet(), moist()); return 0; }