結果

問題 No.2251 Marking Grid
ユーザー 👑 hos.lyrichos.lyric
提出日時 2023-03-17 21:31:46
言語 D
(dmd 2.109.1)
結果
AC  
実行時間 290 ms / 3,000 ms
コード長 4,313 bytes
コンパイル時間 1,550 ms
コンパイル使用メモリ 161,916 KB
実行使用メモリ 25,580 KB
最終ジャッジ日時 2024-06-22 17:38:58
合計ジャッジ時間 6,461 ms
ジャッジサーバーID
(参考情報)
judge4 / judge5
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 2
other AC * 40
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std
    .typecons;
import core.bitop;
class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens
    .popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }
bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }
int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1;
    (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }
struct ModInt(uint M_) {
import std.conv : to;
alias M = M_;
uint x;
this(ModInt a) { x = a.x; }
this(uint x_) { x = x_ % M; }
this(ulong x_) { x = cast(uint)(x_ % M); }
this(int x_) { x = ((x_ %= cast(int)(M)) < 0) ? (x_ + cast(int)(M)) : x_; }
this(long x_) { x = cast(uint)(((x_ %= cast(long)(M)) < 0) ? (x_ + cast(long)(M)) : x_); }
ref ModInt opAssign(T)(inout(T) a) if (is(T == uint) || is(T == ulong) || is(T == int) || is(T == long)) { return this = ModInt(a); }
ref ModInt opOpAssign(string op, T)(T a) {
static if (is(T == ModInt)) {
static if (op == "+") { x = ((x += a.x) >= M) ? (x - M) : x; }
else static if (op == "-") { x = ((x -= a.x) >= M) ? (x + M) : x; }
else static if (op == "*") { x = cast(uint)((cast(ulong)(x) * a.x) % M); }
else static if (op == "/") { this *= a.inv(); }
else static assert(false);
return this;
} else static if (op == "^^") {
if (a < 0) return this = inv()^^(-a);
ModInt b = this, c = 1U;
for (long e = a; e; e >>= 1) { if (e & 1) c *= b; b *= b; }
return this = c;
} else {
return mixin("this " ~ op ~ "= ModInt(a)");
}
}
ModInt inv() const {
uint a = M, b = x; int y = 0, z = 1;
for (; b; ) { const q = a / b; const c = a - q * b; a = b; b = c; const w = y - cast(int)(q) * z; y = z; z = w; }
assert(a == 1); return ModInt(y);
}
ModInt opUnary(string op)() const {
static if (op == "+") { return this; }
else static if (op == "-") { ModInt a; a.x = x ? (M - x) : 0U; return a; }
else static assert(false);
}
ModInt opBinary(string op, T)(T a) const { return mixin("ModInt(this) " ~ op ~ "= a"); }
ModInt opBinaryRight(string op, T)(T a) const { return mixin("ModInt(a) " ~ op ~ "= this"); }
bool opCast(T: bool)() const { return (x != 0U); }
string toString() const { return x.to!string; }
}
enum MO = 998244353;
alias Mint = ModInt!MO;
int root(int[] uf, int u) {
return (uf[u] < 0) ? u : (uf[u] = uf.root(uf[u]));
}
bool connect(int[] uf, int u, int v) {
u = uf.root(u);
v = uf.root(v);
if (u == v) return false;
if (uf[u] > uf[v]) swap(u, v);
uf[u] += uf[v];
uf[v] = u;
return true;
}
void main() {
try {
for (; ; ) {
const H = readInt;
const W = readInt;
auto A = new int[][](H, W);
foreach (x; 0 .. H) foreach (y; 0 .. W) {
A[x][y] = readInt;
}
auto two = new Mint[H * W + 1];
two[0] = 1;
foreach (i; 1 .. H * W + 1) two[i] = two[i - 1] * 2;
alias Entry = Tuple!(int, "a", int, "x", int, "y");
auto es = new Entry[H * W];
foreach (x; 0 .. H) foreach (y; 0 .. W) {
es[x * W + y] = Entry(A[x][y], x, y);
}
es.sort!"a.a > b.a";
auto uf = new int[H + W];
uf[] = -1;
int numComps = H + W;
int bef = -1;
Mint ans;
foreach (ref e; es) {
if (uf.connect(e.x, H + e.y)) {
--numComps;
ans += two[numComps] * e.a;
}
debug {
writeln(e, ": ", numComps);
}
bef = e.a;
}
ans /= 2;
writeln(ans);
}
} catch (EOFException e) {
}
}
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