#include <bits/stdc++.h>
using namespace std;
using LL = long long;
#define FOR(i, l, r) for(int i = (l); i <= (r); ++i)
#define REP(i, n) FOR(i, 0, (n) - 1)
#define ssize(x) int(x.size())
template<class A, class B> auto &operator<<(ostream &o, pair<A, B> p) {
return o << '(' << p.first << ", " << p.second << ')';
}
template<class T> auto operator<<(ostream &o, T x) -> decltype(x.end(), o) {
o << '{'; int i = 0; for (auto e : x) o << (", ")+2*!i++ << e;
return o << '}';
}
#ifdef DEBUG
#define debug(x...) cerr << "[" #x "]: ", [](auto... $) {((cerr << $ << "; "), ...); }(x), cerr << '\n';
#else
#define debug(...) {}
#endif
int n, m;
vector<int> a, b;
vector<int> state, ans;
void solve(int lvl) {
if (lvl == m) {
int lft_2 = n + 1, rgt_2 = -1;
REP(i, n) {
if (state[i] == 2) {
lft_2 = min(lft_2, i);
rgt_2 = max(rgt_2, i);
}
}
if (rgt_2 == -1) {
int prev = -1;
REP(i, n) {
if (state[i] == 1) {
prev = i;
continue;
}
FOR(j, prev + 1, i)
ans[j - prev] ^= 1;
}
return;
}
FOR(i, lft_2, rgt_2) {
if (state[i] == 1)
return;
}
for (int i = lft_2; i >= 0 && state[i] != 1; i--) {
for (int j = rgt_2; j < n && state[j] != 1; j++)
ans[j - i + 1] ^= 1;
}
return;
}
int x = a[lvl], y = b[lvl];
if (state[x] == 0 && state[y] == 0) {
state[x] = 1;
state[y] = 1;
solve(lvl + 1);
state[x] = 2;
state[y] = 2;
solve(lvl + 1);
state[x] = 0;
state[y] = 0;
}
else if (
(state[x] == 2 && state[y] == 1) ||
(state[x] == 0 && state[y] == 1) ||
(state[x] == 2 && state[y] == 0)) {
swap(state[x], state[y]);
solve(lvl + 1);
swap(state[x], state[y]);
}
else {
solve(lvl + 1);
}
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> m;
state.resize(n);
ans.resize(n + 1);
a.resize(m);
b.resize(m);
REP(i, m) {
cin >> a[i] >> b[i];
a[i]--;
b[i]--;
}
solve(0);
FOR(i, 1, n)
cout << ans[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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | #include <bits/stdc++.h> using namespace std; using LL = long long; #define FOR(i, l, r) for(int i = (l); i <= (r); ++i) #define REP(i, n) FOR(i, 0, (n) - 1) #define ssize(x) int(x.size()) template<class A, class B> auto &operator<<(ostream &o, pair<A, B> p) { return o << '(' << p.first << ", " << p.second << ')'; } template<class T> auto operator<<(ostream &o, T x) -> decltype(x.end(), o) { o << '{'; int i = 0; for (auto e : x) o << (", ")+2*!i++ << e; return o << '}'; } #ifdef DEBUG #define debug(x...) cerr << "[" #x "]: ", [](auto... $) {((cerr << $ << "; "), ...); }(x), cerr << '\n'; #else #define debug(...) {} #endif int n, m; vector<int> a, b; vector<int> state, ans; void solve(int lvl) { if (lvl == m) { int lft_2 = n + 1, rgt_2 = -1; REP(i, n) { if (state[i] == 2) { lft_2 = min(lft_2, i); rgt_2 = max(rgt_2, i); } } if (rgt_2 == -1) { int prev = -1; REP(i, n) { if (state[i] == 1) { prev = i; continue; } FOR(j, prev + 1, i) ans[j - prev] ^= 1; } return; } FOR(i, lft_2, rgt_2) { if (state[i] == 1) return; } for (int i = lft_2; i >= 0 && state[i] != 1; i--) { for (int j = rgt_2; j < n && state[j] != 1; j++) ans[j - i + 1] ^= 1; } return; } int x = a[lvl], y = b[lvl]; if (state[x] == 0 && state[y] == 0) { state[x] = 1; state[y] = 1; solve(lvl + 1); state[x] = 2; state[y] = 2; solve(lvl + 1); state[x] = 0; state[y] = 0; } else if ( (state[x] == 2 && state[y] == 1) || (state[x] == 0 && state[y] == 1) || (state[x] == 2 && state[y] == 0)) { swap(state[x], state[y]); solve(lvl + 1); swap(state[x], state[y]); } else { solve(lvl + 1); } } int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cin >> n >> m; state.resize(n); ans.resize(n + 1); a.resize(m); b.resize(m); REP(i, m) { cin >> a[i] >> b[i]; a[i]--; b[i]--; } solve(0); FOR(i, 1, n) cout << ans[i] << ' '; cout << '\n'; return 0; } |
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