func_code_string: #include <bits/stdc++.h>   using namespace std;   set<int> s[300000];   int ans[300000];   bool vis[300000];   int nr[500000];   int main() {     int n, m;     scanf( %d %d , &n, &m);     priority_queue<pair<int, int> > pq;     for (int i = 0; i <= 2 * m; i++) nr[i] = -1;     for (int i = 0; i < n; i++) {       int k, x;       scanf( %d , &k);       while (k--) {         scanf( %d , &x);         nr[x + m] = i;         s[i].insert(x);       }       pq.push(make_pair(-s[i].size(), i));     }     while (!pq.empty()) {       int k = pq.top().second;       pq.pop();       if (vis[k]) continue;       vis[k] = true;       if (s[k].empty()) {         puts( NO );         return 0;       }       int x = *s[k].begin();       if (x > 0) ans[x] = 1;       if (nr[m - x] != -1) {         s[nr[m - x]].erase(-x);         pq.push(make_pair(-s[nr[m - x]].size(), nr[m - x]));       }     }     puts( YES );     for (int i = 1; i <= m; i++) printf( %d , ans[i]);     puts(  );   }   