結果
| 問題 | No.1261 数字集め |
| ユーザー |
👑  hos.lyric
|
| 提出日時 | 2020-10-16 22:38:55 |
| 言語 | D (dmd 2.106.1) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 4,519 bytes |
| コンパイル時間 | 2,658 ms |
| コンパイル使用メモリ | 152,552 KB |
| 実行使用メモリ | 822,820 KB |
| 最終ジャッジ日時 | 2023-09-04 10:30:43 |
| 合計ジャッジ時間 | 26,427 ms |
|
ジャッジサーバーID （参考情報） |
judge15 / judge12 |
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テストケース
テストケース表示| 入力 | 結果 | 実行時間 実行使用メモリ |
|---|---|---|
| testcase_00 | MLE | - |
| testcase_01 | -- | - |
| testcase_02 | -- | - |
| testcase_03 | -- | - |
| testcase_04 | -- | - |
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| testcase_90 | -- | - |
| testcase_91 | -- | - |
| testcase_92 | -- | - |
| testcase_93 | -- | - |
ソースコード
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; }
real readReal() { return readToken.to!real; }
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(int M_) {
import std.conv : to;
alias M = M_;
int x;
this(ModInt a) { x = a.x; }
this(long a) { x = cast(int)(a % M); if (x < 0) x += M; }
ref ModInt opAssign(long a) { return (this = ModInt(a)); }
ref ModInt opOpAssign(string op)(ModInt a) {
static if (op == "+") { x += a.x; if (x >= M) x -= M; }
else static if (op == "-") { x -= a.x; if (x < 0) x += M; }
else static if (op == "*") { x = cast(int)((cast(long)(x) * a.x) % M); }
else static if (op == "/") { this *= a.inv(); }
else static assert(false);
return this;
}
ref ModInt opOpAssign(string op)(long a) {
static if (op == "^^") {
if (a < 0) return (this = inv()^^(-a));
ModInt t2 = this, te = ModInt(1);
for (long e = a; e > 0; e >>= 1) {
if (e & 1) te *= t2;
t2 *= t2;
}
x = cast(int)(te.x);
return this;
} else return mixin("this " ~ op ~ "= ModInt(a)");
}
ModInt inv() const {
int a = x, b = M, y = 1, z = 0, t;
for (; ; ) {
t = a / b; a -= t * b;
if (a == 0) {
assert(b == 1 || b == -1);
return ModInt(b * z);
}
y -= t * z;
t = b / a; b -= t * a;
if (b == 0) {
assert(a == 1 || a == -1);
return ModInt(a * y);
}
z -= t * y;
}
}
ModInt opUnary(string op: "-")() const { return ModInt(-x); }
ModInt opBinary(string op, T)(T a) const {
return mixin("ModInt(this) " ~ op ~ "= a");
}
ModInt opBinaryRight(string op)(long a) const {
return mixin("ModInt(a) " ~ op ~ "= this");
}
bool opCast(T: bool)() const { return (x != 0); }
string toString() const { return x.to!string; }
}
enum MO = 1000000007;
alias Mint = ModInt!MO;
void main() {
try {
for (; ; ) {
const N = readInt();
const M = readLong();
auto A = new Mint[N + 1];
foreach (u; 2 .. N + 1) {
A[u] = readLong() - 1;
}
const Q = readInt();
auto X = new int[Q];
auto Y = new int[Q];
foreach (q; 0 .. Q) {
X[q] = readInt();
Y[q] = readInt();
}
auto AA = new Mint[N + 1];
foreach (u; 2 .. N + 1) {
AA[u] = A[u]^^((M - 3) + 2);
}
auto divss = new int[][N + 1];
foreach (u; 1 .. N + 1) {
for (int v = u; v <= N; ++v) {
divss[v] ~= u;
}
}
Mint calc(int u, int v) {
const a = A[u], aa = AA[u];
const b = A[v], bb = AA[v];
const c = A[N], cc = AA[N];
Mint ret = -(aa * (b - c) + bb * (c - a) + cc * (a - b));
ret /= (a - b) * (b - c) * (c - a);
debug {
writeln(u, " ", v, ": ", ret);
}
return ret;
}
Mint ans;
auto goal = new bool[N + 1];
auto sums = new Mint[N + 1];
void add(int u, int v) {
if (v == N) {
ans += sums[u];
goal[u] = true;
} else {
const here = calc(u, v);
if (goal[v]) {
ans += here;
}
sums[v] += here;
}
}
foreach (u; 2 .. N + 1) {
for (int v = 2 * u; v <= N; v += u) {
add(u, v);
}
}
writeln(ans);
foreach (q; 0 .. Q) {
add(X[q], Y[q]);
writeln(ans);
}
}
} catch (EOFException e) {
}
}