結果
| 問題 | No.1209 XOR Into You |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-08-30 14:04:51 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 95 ms / 2,000 ms |
| コード長 | 2,846 bytes |
| コンパイル時間 | 988 ms |
| コンパイル使用メモリ | 131,564 KB |
| 実行使用メモリ | 14,212 KB |
| 最終ジャッジ日時 | 2024-06-22 08:45:27 |
| 合計ジャッジ時間 | 6,332 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 37 |
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 N = readInt();
auto A = new long[N];
foreach (i; 0 .. N) {
A[i] = readLong();
}
auto B = new long[N];
foreach (i; 0 .. N) {
B[i] = readLong();
}
bool ok = true;
ok = ok && (A[0] == B[0]);
ok = ok && (A[N - 1] == B[N - 1]);
alias Entry = Tuple!(long, "d", int, "i");
auto esA = new Entry[N - 1];
auto esB = new Entry[N - 1];
foreach (i; 0 .. N - 1) {
esA[i] = Entry(A[i] ^ A[i + 1], i);
esB[i] = Entry(B[i] ^ B[i + 1], i);
}
esA.sort;
esB.sort;
debug {
writeln("esA = ", esA);
writeln("esB = ", esB);
}
foreach (j; 0 .. N - 1) {
ok = ok && (esA[j].d == esB[j].d);
}
if (ok) {
auto vals = new int[N - 1];
foreach (j; 0 .. N - 1) {
vals[esA[j].i] = esB[j].i;
}
long ans;
auto bit = new long[N - 1];
foreach (i; 0 .. N - 1) {
ans += i - bit.bSum(vals[i]);
bit.bAdd(vals[i], +1);
}
writeln(ans);
} else {
writeln(-1);
}
}
} catch (EOFException e) {
}
}