結果
問題 | No.1451 集団登校 |
ユーザー |
![]() |
提出日時 | 2021-03-31 15:46:27 |
言語 | D (dmd 2.109.1) |
結果 |
AC
|
実行時間 | 178 ms / 2,000 ms |
コード長 | 3,121 bytes |
コンパイル時間 | 750 ms |
コンパイル使用メモリ | 118,072 KB |
実行使用メモリ | 20,428 KB |
最終ジャッジ日時 | 2024-06-22 11:08:14 |
合計ジャッジ時間 | 4,123 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 27 |
ソースコード
import std.stdio, std.conv, std.functional, std.string;import std.algorithm, std.array, std.container, std.range, std.typecons;import std.bigint, std.numeric, std.math, std.random;import core.bitop;string FMT_F = "%.10f";static File _f;void file_io(string fn) { _f = File(fn, "r"); }static string[] s_rd;T _RD(T = long)() { while(!s_rd.length) s_rd = readln.chomp.split; string res = s_rd[0]; s_rd.popFront; return res.to!T; }T _RD(T = long)(File f) { while(!s_rd.length) s_rd = f.readln.chomp.split; string res = s_rd[0]; s_rd.popFront; return res.to!T; }T[] _RDA(T = long)(T fix = 0) { auto r = readln.chomp.split.to!(T[]); r[] += fix; return r; }T[] _RDA(T = long)(File f, T fix = 0) { auto r = f.readln.chomp.split.to!(T[]); r[] += fix; return r; }T RD(T = long)() { if (_f.isOpen) return _RD!T(_f); else return _RD!T; }T[] RDA(T = long)(T fix = 0) { if (_f.isOpen) return _RDA!T(_f, fix); else return _RDA!T(fix); }size_t[] MAKE_IDX(alias less = "a < b", Range)(Range range) { auto idx = new size_t[](range.length); makeIndex!(less)(range, idx); return idx;}size_t MIN_POS(alias less = "a < b", Range)(Range range) { auto r = minPos!(less)(range); return range.length - r.length; }void chmin(T)(ref T x, T y) { x = min(x, y); } void chmax(T)(ref T x, T y) { x = max(x, y); }bool inside(T)(T x, T b, T e) { return x >= b && x < e; }T lcm(T)(T x, T y) { return x * (y / gcd(x, y)); }long mod = 10^^9 + 7;//long mod = 998_244_353;//long mod = 1_000_003;void moda(ref long x, long y) { x = (x + y) % mod; }void mods(ref long x, long y) { x = ((x + mod) - (y % mod)) % mod; }void modm(ref long x, long y) { x = (x * y) % mod; }void modpow(ref long x, long y) { if (!y) { x = 1; return; } auto t = x; x.modpow(y>>1); x.modm(x); if (y&1) x.modm(t); }void modd(ref long x, long y) { y.modpow(mod - 2); x.modm(y); }struct UnionFind(T){void init(T n) { par = new T[](n); foreach (i; 0..n) par[i] = i; cnt = new T[](n); fill(cnt, 1); }T root(T i) { return par[i] == i ? i : (par[i] = root(par[i])); }bool same(T i, T j) { return root(i) == root(j); }void unite(T i, T j) { i = root(i); j = root(j); if (i == j) return; par[i] = j; cnt[j] += cnt[i]; }T size(T i) { return cnt[root(i)]; }T[] par, cnt;}void main(){auto N = RD;auto M = RD;UnionFind!long uf;uf.init(N);auto ans = new long[](N);ans[] = 1;auto list = new long[][](N);foreach (i; 0..N)list[i] ~= i;foreach (i; 0..M){auto a = RD-1;auto b = RD-1;auto ra = uf.root(a);auto rb = uf.root(b);if (uf.same(ra, rb)) continue;long c1 = uf.size(ra);long c2 = uf.size(rb);uf.unite(ra, rb);auto r = uf.root(ra);if (c1 == c2){foreach (e; list[ra])ans[e].modm(2);foreach (e; list[rb])ans[e].modm(2);list[r] = list[ra] ~ list[rb];}else if (c1 > c2){foreach (e; list[rb])ans[e] = 0;list[rb].length = 0;list[r] = list[ra];}else{foreach (e; list[ra])ans[e] = 0;list[ra].length = 0;list[r] = list[rb];}}foreach (e; ans){long x = 1;x.modd(e);writeln(x);}stdout.flush;debug readln;}