#include <bits/stdc++.h> using namespace std; #define sim template < class c #define ris return * this #define dor > debug & operator << #define eni(x) sim > typename \ enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) { sim > struct rge { c b, e; }; sim > rge<c> range(c i, c j) { return {i, j}; } sim > auto dud(c* x) -> decltype(cerr << *x, 0); sim > char dud(...); struct debug { #ifdef LOCAL ~debug() { cerr << endl; } eni(!=) cerr << boolalpha << i; ris; } eni(==) ris << range(begin(i), end(i)); } sim, class b dor(pair < b, c > d) { ris << "(" << d.first << ", " << d.second << ")"; } sim dor(rge<c> d) { *this << "["; for (c it = d.b; it != d.e; ++it) *this << ", " + 2 * (it == d.b) << *it; ris << "]"; } #else sim dor(const c&) { ris; } #endif }; #define imie(x...) " [" #x ": " << (x) << "] " using ll = long long; ll Swap(ll mask, int a, int b) { const ll bit = ((mask >> a) ^ (mask >> b)) & 1; return mask ^ (bit << a) ^ (bit << b); } ll Set(ll mask, int a) { return mask | (1ll << a); } ll Get(ll mask, int a) { return (mask >> a) & 1; } ll Przedzial(int a, int b) { return ((1ll << (b - a)) - 1) << a; } int n, m; vector<pair<int, int>> pary; ll Baktracz(int p, ll zera, ll jedynki) { while (p < m) { const auto [a, b] = pary[p]; if (Get(jedynki, a) or Get(zera, b)) { jedynki = Swap(jedynki, a, b); zera = Swap(zera, a, b); p++; continue; } if (Get(zera, a) or Get(jedynki, b)) { p++; continue; } assert(Get(zera | jedynki, a) == 0); assert(Get(zera | jedynki, b) == 0); const ll bak1 = Baktracz(p + 1, Set(Set(zera, a), b), jedynki); const ll bak2 = Baktracz(p + 1, zera, Set(Set(jedynki, a), b)); return bak1 ^ bak2; } assert(p == m); ll wynik = 0; for (int i = 0; i < n; i++) { for (int j = i + 1; j <= n; j++) { const ll rang = Przedzial(i, j); if ((zera & rang) == 0 and (jedynki & (~rang)) == 0) { wynik ^= (1ll << (j - i)); } } } return wynik; } int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cin >> n >> m; pary.resize(m); for (auto& [a, b] : pary) { cin >> a >> b; a--; b--; assert(0 <= a and a < n); assert(0 <= b and b < n); } const ll wynik = Baktracz(0, 0ll, 0ll); for (int i = 1; i <= n; i++) { if (i > 1) cout << " "; cout << Get(wynik, i); } cout << "\n"; return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | #include <bits/stdc++.h> using namespace std; #define sim template < class c #define ris return * this #define dor > debug & operator << #define eni(x) sim > typename \ enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) { sim > struct rge { c b, e; }; sim > rge<c> range(c i, c j) { return {i, j}; } sim > auto dud(c* x) -> decltype(cerr << *x, 0); sim > char dud(...); struct debug { #ifdef LOCAL ~debug() { cerr << endl; } eni(!=) cerr << boolalpha << i; ris; } eni(==) ris << range(begin(i), end(i)); } sim, class b dor(pair < b, c > d) { ris << "(" << d.first << ", " << d.second << ")"; } sim dor(rge<c> d) { *this << "["; for (c it = d.b; it != d.e; ++it) *this << ", " + 2 * (it == d.b) << *it; ris << "]"; } #else sim dor(const c&) { ris; } #endif }; #define imie(x...) " [" #x ": " << (x) << "] " using ll = long long; ll Swap(ll mask, int a, int b) { const ll bit = ((mask >> a) ^ (mask >> b)) & 1; return mask ^ (bit << a) ^ (bit << b); } ll Set(ll mask, int a) { return mask | (1ll << a); } ll Get(ll mask, int a) { return (mask >> a) & 1; } ll Przedzial(int a, int b) { return ((1ll << (b - a)) - 1) << a; } int n, m; vector<pair<int, int>> pary; ll Baktracz(int p, ll zera, ll jedynki) { while (p < m) { const auto [a, b] = pary[p]; if (Get(jedynki, a) or Get(zera, b)) { jedynki = Swap(jedynki, a, b); zera = Swap(zera, a, b); p++; continue; } if (Get(zera, a) or Get(jedynki, b)) { p++; continue; } assert(Get(zera | jedynki, a) == 0); assert(Get(zera | jedynki, b) == 0); const ll bak1 = Baktracz(p + 1, Set(Set(zera, a), b), jedynki); const ll bak2 = Baktracz(p + 1, zera, Set(Set(jedynki, a), b)); return bak1 ^ bak2; } assert(p == m); ll wynik = 0; for (int i = 0; i < n; i++) { for (int j = i + 1; j <= n; j++) { const ll rang = Przedzial(i, j); if ((zera & rang) == 0 and (jedynki & (~rang)) == 0) { wynik ^= (1ll << (j - i)); } } } return wynik; } int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cin >> n >> m; pary.resize(m); for (auto& [a, b] : pary) { cin >> a >> b; a--; b--; assert(0 <= a and a < n); assert(0 <= b and b < n); } const ll wynik = Baktracz(0, 0ll, 0ll); for (int i = 1; i <= n; i++) { if (i > 1) cout << " "; cout << Get(wynik, i); } cout << "\n"; return 0; } |