結果

問題 No.1977 Extracting at Constant Intervals
ユーザー 👑 hos.lyric
提出日時 2022-06-16 23:17:43
言語 D
(dmd 2.109.1)
結果
AC  
実行時間 20 ms / 2,000 ms
コード長 2,482 bytes
コンパイル時間 903 ms
コンパイル使用メモリ 121,568 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-22 15:27:03
合計ジャッジ時間 3,165 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
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ファイルパターン 結果
sample AC * 2
other AC * 31
権限があれば一括ダウンロードができます
コンパイルメッセージ
/home/linuxbrew/.linuxbrew/opt/dmd/include/dlang/dmd/std/numeric.d(2999): Warning: cannot inline function `std.numeric.gcdImpl!ulong.gcdImpl`

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; }
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)); }
enum INF = 10L^^18;
void main() {
try {
for (; ; ) {
const N = readInt;
const M = readLong;
const L = readLong;
auto A = new long[N];
foreach (i; 0 .. N) {
A[i] = readLong;
}
const G = cast(int)(gcd(N, L));
const H = N / G;
auto js = new int[N];
auto sumss = new long[][](G, H + 1);
foreach (i0; 0 .. G) {
foreach (j; 0 .. H) {
const i = cast(int)((i0 + L * j) % N);
js[i] = j;
sumss[i0][j + 1] = sumss[i0][j] + A[i];
}
}
debug {
writeln("js = ", js);
writeln("sumss = ", sumss);
}
long get(long start, long num) {
const i = cast(int)(start % N);
const i0 = i % G;
long ret;
ret += ((js[i] + num) / H) * sumss[i0][H] + sumss[i0][(js[i] + num) % H];
ret -= sumss[i0][js[i]];
debug {
writeln(start, " ", num, ": ", ret);
}
return ret;
}
const Q = (N * M) / L;
const R = (N * M) % L;
long ans = -INF;
foreach (x; 0 .. min(N, R)) {
chmax(ans, get(x, Q + 1));
}
foreach (x; max(L - N, R) .. L) {
chmax(ans, get(x, Q));
}
writeln(ans);
}
} catch (EOFException e) {
}
}
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