結果
| 問題 |
No.1852 Divide or Reduce
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-02-25 22:36:49 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 346 ms / 2,000 ms |
| コード長 | 3,149 bytes |
| コンパイル時間 | 998 ms |
| コンパイル使用メモリ | 125,172 KB |
| 実行使用メモリ | 22,976 KB |
| 最終ジャッジ日時 | 2024-06-22 14:25:26 |
| 合計ジャッジ時間 | 6,546 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 20 |
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 main() {
debug {{
bool[string] cache;
bool calc(int[] as) {
const key = as.to!string;
auto ptr = key in cache;
if (ptr) return *ptr;
bool ret;
const asLen = cast(int)(as.length);
foreach (i; 0 .. asLen) if (as[i] >= 2) {
foreach (x; 1 .. as[i] / 2 + 1) {
auto bs = as.dup;
bs[i] = x;
bs ~= as[i] - x;
bs.sort;
if (!calc(bs)) {
ret = true;
break;
}
}
}
if (!ret) {
bool ok = true;
foreach (i; 0 .. asLen) {
ok = ok && (as[i] >= 2);
}
if (ok) {
auto bs = as.dup;
bs[] -= 1;
if (!calc(bs)) {
ret = true;
}
}
}
return cache[key] = ret;
}
enum lim = 8 + 1;
foreach (a; 1 .. lim) {
writeln([a], ": ", calc([a]));
}
foreach (a; 1 .. lim) foreach (b; a .. lim) {
writeln([a, b], ": ", calc([a, b]));
}
foreach (a; 1 .. lim) foreach (b; a .. lim) foreach (c; b .. lim) {
writeln([a, b, c], ": ", calc([a, b, c]));
}
foreach (a; 1 .. lim) foreach (b; a .. lim) foreach (c; b .. lim) foreach (d; c .. lim) {
// writeln([a, b, c, d], ": ", calc([a, b, c, d]));
if (!calc([a, b, c, d])) {
writeln([a, b, c, d]);
}
}
}}
try {
for (; ; ) {
const numCases = readInt;
foreach (caseId; 0 .. numCases) {
const N = readInt;
auto A = new long[N];
foreach (i; 0 .. N) {
A[i] = readLong;
}
A.sort;
bool ans;
ans = ans || (N % 2 == 0 && A[0] % 2 == 0);
int cnt;
foreach (i; 0 .. N) {
if (A[i] % 2 == 0) {
++cnt;
}
}
ans = ans || (cnt % 2 != 0);
writeln(ans ? "First" : "Second");
}
}
} catch (EOFException e) {
}
}