#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for(int i = (a); i <= (b); ++i)
#define REP(i, n) for(int i = 0; i < (n); ++i)
template<class T> int size(T && a) {
return (int)(a.size());
}
ostream& operator << (ostream &os, string str) {
for(char c : str) os << c;
return os;
}
template <class A, class B> ostream& operator << (ostream &os, const pair<A, B> &p) {
return os << '(' << p.first << "," << p.second << ')';
}
template <class T> auto operator << (ostream &os, T &&x) -> decltype(x.begin(), os) {
os << '{';
for(auto it = x.begin(); it != x.end(); ++it)
os << *it << (it == prev(x.end()) ? "" : " ");
return os << '}';
}
template <class T> ostream& operator << (ostream &os, vector<vector<T>> vec) {
for(auto x : vec)
os << "\n " << x;
return os;
}
void dump() {}
template <class T, class... Args> void dump(T &&x, Args... args) {
cerr << x << "; ";
dump(args...);
}
#ifdef DEBUG
# define debug(x...) cerr << "[" #x "]: ", dump(x), cerr << '\n'
#else
# define debug(...) 0
#endif
//--------------------------------------------------
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int n, m;
cin >> n >> m;
vector<pair<int, int>> edges(m);
REP (i, m) {
int a, b;
cin >> a >> b;
--a, --b;
edges[i] = pair(a, b);
}
vector<int> answer(n + 1);
REP (mask, (1 << n)) {
vector<int> values(n);
REP (i, n) if (mask & (1 << i)) {
values[i] = 1;
}
debug(values);
for (auto [a, b] : edges) {
if (values[a] == 1 and values[b] == 0)
swap(values[a], values[b]);
}
debug(values);
int blocks = 0;
REP (i, n) {
if (values[i] == 0) continue;
while (i < n - 1 and values[i + 1] == 1)
++i;
++blocks;
}
debug(blocks);
if (blocks == 1) {
int k = __builtin_popcount(mask);
answer[k] = (answer[k] + 1) % 2;
}
}
FOR (i, 1, n) cout << answer[i] << ' ';
}
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 | #include <bits/stdc++.h> using namespace std; #define FOR(i, a, b) for(int i = (a); i <= (b); ++i) #define REP(i, n) for(int i = 0; i < (n); ++i) template<class T> int size(T && a) { return (int)(a.size()); } ostream& operator << (ostream &os, string str) { for(char c : str) os << c; return os; } template <class A, class B> ostream& operator << (ostream &os, const pair<A, B> &p) { return os << '(' << p.first << "," << p.second << ')'; } template <class T> auto operator << (ostream &os, T &&x) -> decltype(x.begin(), os) { os << '{'; for(auto it = x.begin(); it != x.end(); ++it) os << *it << (it == prev(x.end()) ? "" : " "); return os << '}'; } template <class T> ostream& operator << (ostream &os, vector<vector<T>> vec) { for(auto x : vec) os << "\n " << x; return os; } void dump() {} template <class T, class... Args> void dump(T &&x, Args... args) { cerr << x << "; "; dump(args...); } #ifdef DEBUG # define debug(x...) cerr << "[" #x "]: ", dump(x), cerr << '\n' #else # define debug(...) 0 #endif //-------------------------------------------------- int main() { ios_base::sync_with_stdio(0); cin.tie(0); int n, m; cin >> n >> m; vector<pair<int, int>> edges(m); REP (i, m) { int a, b; cin >> a >> b; --a, --b; edges[i] = pair(a, b); } vector<int> answer(n + 1); REP (mask, (1 << n)) { vector<int> values(n); REP (i, n) if (mask & (1 << i)) { values[i] = 1; } debug(values); for (auto [a, b] : edges) { if (values[a] == 1 and values[b] == 0) swap(values[a], values[b]); } debug(values); int blocks = 0; REP (i, n) { if (values[i] == 0) continue; while (i < n - 1 and values[i + 1] == 1) ++i; ++blocks; } debug(blocks); if (blocks == 1) { int k = __builtin_popcount(mask); answer[k] = (answer[k] + 1) % 2; } } FOR (i, 1, n) cout << answer[i] << ' '; } |
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