結果
| 問題 |
No.1838 Modulo Straight
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-02-12 22:10:07 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 162 ms / 2,000 ms |
| コード長 | 2,789 bytes |
| コンパイル時間 | 826 ms |
| コンパイル使用メモリ | 122,072 KB |
| 実行使用メモリ | 39,580 KB |
| 最終ジャッジ日時 | 2024-06-22 14:16:08 |
| 合計ジャッジ時間 | 7,224 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 38 |
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)); }
void bAdd(T)(T[] bit, int pos, T val)
in {
assert(0 <= pos && pos < bit.length, "bAdd: 0 <= pos < |bit| must hold");
}
do {
for (int x = pos; x < bit.length; x |= x + 1) {
bit[x] += val;
}
}
// sum of [0, pos)
T bSum(T)(T[] bit, int pos)
in {
assert(0 <= pos && pos <= bit.length, "bSum: 0 <= pos <= |bit| must hold");
}
do {
T ret = 0;
for (int x = pos - 1; x >= 0; x = (x & (x + 1)) - 1) {
ret += bit[x];
}
return ret;
}
void main() {
try {
for (; ; ) {
const M = readInt;
const K = readInt;
auto A = new int[M * K];
foreach (i; 0 .. M * K) {
A[i] = readInt;
}
auto B = new int[M * K];
{
auto cnt = new int[M];
foreach (i; 0 .. M * K) {
B[i] = cnt[A[i]]++;
}
}
auto posss = new int[][M];
{
auto cnt = new int[K];
foreach (i; 0 .. M * K) {
posss[A[i]] ~= cnt[B[i]]++;
}
}
debug {
writeln("A = ", A);
writeln("B = ", B);
writeln("posss = ", posss);
}
auto anss = new long[M];
auto bit = new int[M * K];
foreach (i; 0 .. M * K) {
const val = B[i] * M + A[i];
anss[0] += (i - bit.bSum(val));
bit.bAdd(val, 1);
}
foreach (a; 0 .. M - 1) {
long sum = anss[a];
foreach (pos; posss[a]) {
sum += (M - 1 - 2 * pos);
}
anss[a + 1] = sum;
}
debug {
writeln("anss = ", anss);
}
const ans = anss.minElement;
writeln(ans);
}
} catch (EOFException e) {
}
}