#include #ifndef LOCAL_ #define fprintf if( false ) fprintf #endif // LOCAL_ #define dump() fprintf(stderr, "#%s.%d\n", __func__, __LINE__); #define dumpl(x1) fprintf(stderr, "#%s.%d (%s) = (%ld)\n", __func__, __LINE__, #x1, x1); #define dumpll(x1, x2) fprintf(stderr, "#%s.%d (%s, %s) = (%ld, %ld)\n", __func__, __LINE__, #x1, #x2, x1, x2); #define dumplll(x1, x2, x3) fprintf(stderr, "#%s.%d (%s, %s, %s) = (%ld, %ld, %ld)\n", __func__, __LINE__, #x1, #x2, #x3, x1, x2, x3); #define dumpd(x1) fprintf(stderr, "#%s.%d (%s) = (%lf)\n", __func__, __LINE__, #x1, x1); #define dumpdd(x1, x2) fprintf(stderr, "#%s.%d (%s, %s) = (%lf, %lf)\n", __func__, __LINE__, #x1, #x2, x1, x2); #define loop for(;;) typedef std::vector LI; typedef std::queue QI; #define rep(i,n) for(long i = 0; i < (long)n; ++i) const double pi = M_PI; const long mod = 1000000007; template void scan1(T& x) { fprintf(stderr, "unknown type\n"); } template<> void scan1(long& x) { if( scanf("%ld", &x) < 0 ) exit(0); } template<> void scan1(std::string& x) { if( not ( std::cin >> x ) ) exit(0); } void scan() {} template void scan(Head& x, Tail&... xs) { scan1(x); scan(xs...); } struct N001 { long n; std::vector parents; std::vector numbers; N001(long n_) : n(n_), parents(n+1, -1), numbers(n+1, 1) { } }; long find(N001& s, long x) { if( s.parents[x] == -1 ) return x; return s.parents[x] = find(s, s.parents[x]); } bool same(N001& s, long x, long y) { return find(s, x) == find(s, y); } void unite(N001& s, long x, long y) { long x2 = find(s, x); long y2 = find(s, y); if( x2 == y2 ) return; // if( not ( x2 <= y2 ) ) // std::swap(x2, y2); // if( not ( s.numbers[x2] <= s.numbers[y2] ) ) // std::swap(x2, y2); s.parents[x2] = y2; s.numbers[y2] += s.numbers[x2]; } struct Solver { Solver() { fprintf(stderr, "--------Solver begin--------\n"); } ~Solver() { fprintf(stderr, "--------Solver end--------\n"); } void solve() { long n, m; scan(n, m); N001 uf(n); for(long i = 0; i < m; ++i) { long a, b; scan(a, b); long a2 = find(uf, a); long b2 = find(uf, b); if( uf.numbers[a2] != uf.numbers[b2] ) { if( uf.numbers[a2] < uf.numbers[b2] ) { unite(uf, a2, b2); } else { unite(uf, b2, a2); } } else { if( a2 < b2 ) { unite(uf, b2, a2); } else { unite(uf, a2, b2); } } } for(long i = 1; i <= n; ++i) { printf("%ld\n", find(uf, i)); } } }; int main() { loop std::unique_ptr(new Solver())->solve(); }