#include <iostream>
#include <vector>
using namespace std;
using pii = pair<int, int>;
int n, m;
vector<pii> orders;
int res[40];
bool good(vector<int> &pos){
bool wasdiff = pos[0]==1;
for(int i=0; i<n-1; i++){
int diff = pos[i+1] - pos[i];
if(diff > 0){
if(wasdiff) return false;
wasdiff = true;
}
}
return true;
}
int main()
{
cin.tie(0)->sync_with_stdio(0);
cin>>n>>m;
orders.resize(m);
for(int i=0; i<m; i++){
auto &[a, b] = orders[i];
cin>>a>>b;
}
for(int i=1; i<(1<<n); i++){
vector<int> pos(n, 0);
int sz = 0;
for(int j=0; j<n; j++){
if(i&(1<<j)){
sz++;
pos[j] = 1;
}else{
pos[j] = 0;
}
}
for(auto [f, s] : orders){
f--;
s--;
if(pos[f] == 1 && pos[s] == 0){
swap(pos[f], pos[s]);
}
}
if(good(pos)){
res[sz]++;
res[sz] %= 2;
}
}
for(int i=1; i<=n; i++){
cout<<res[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 | #include <iostream> #include <vector> using namespace std; using pii = pair<int, int>; int n, m; vector<pii> orders; int res[40]; bool good(vector<int> &pos){ bool wasdiff = pos[0]==1; for(int i=0; i<n-1; i++){ int diff = pos[i+1] - pos[i]; if(diff > 0){ if(wasdiff) return false; wasdiff = true; } } return true; } int main() { cin.tie(0)->sync_with_stdio(0); cin>>n>>m; orders.resize(m); for(int i=0; i<m; i++){ auto &[a, b] = orders[i]; cin>>a>>b; } for(int i=1; i<(1<<n); i++){ vector<int> pos(n, 0); int sz = 0; for(int j=0; j<n; j++){ if(i&(1<<j)){ sz++; pos[j] = 1; }else{ pos[j] = 0; } } for(auto [f, s] : orders){ f--; s--; if(pos[f] == 1 && pos[s] == 0){ swap(pos[f], pos[s]); } } if(good(pos)){ res[sz]++; res[sz] %= 2; } } for(int i=1; i<=n; i++){ cout<<res[i]<<' '; } cout<<'\n'; return 0; } |
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