結果
| 問題 |
No.1404 誕生日プレゼント
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-05-10 05:21:40 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 1,232 ms / 3,153 ms |
| コード長 | 5,195 bytes |
| コンパイル時間 | 2,500 ms |
| コンパイル使用メモリ | 91,508 KB |
| 実行使用メモリ | 63,128 KB |
| 最終ジャッジ日時 | 2024-09-19 09:14:31 |
| 合計ジャッジ時間 | 46,206 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 26 |
ソースコード
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.NoSuchElementException;
public class Main {
public static void main(String[] args) {
new Main().run();
}
long pow(long a, long n) {
return n!=0?pow(a*a%p,n/2)*(n%2==1?a:1)%p : 1;
}
long inv(long a) {
return pow(a,p-2);
}
class Pair {
long u, v;
public Pair(long u, long v) {
this.u=u;
this.v=v;
}
@Override
public String toString() {
return "1 "+(u+1)+" "+(v+1);
}
}
void add(ArrayList<Pair> ans, long[] A, int i, int j) {
A[i]=(A[i]+A[j])%p;
ans.add(new Pair(i, j));
}
// A[t] == B[t] に 18*2 step でする。
void solve2(ArrayList<Pair> ans, long[] A, long[] B, int s, int t) {
long a=A[t], a2=A[s];
long b=B[t];
assert(a!=0 && A[s]==B[s]);
long x;
if (a==0) x=p;
else {
long c=a2*inv(a)%p;
x=inv(c)*(b*inv(a)%p+p-pow(2,17))%p;
}
for (int shift=17;shift>=0;--shift) {
if ((x>>shift)%2==1) add(ans, A, t, s);
if (shift>0) add(ans, A, t, t);
}
assert(A[t]==B[t]);
}
final long p=223577;
void run() {
FastScanner sc = new FastScanner();
int N=sc.nextInt();
sc.nextLong();
long[] A=new long[N];
long[] B=new long[N];
for (int i=0;i<N;++i) A[i]=sc.nextLong();
for (int i=0;i<N;++i) B[i]=sc.nextLong();
boolean za=Arrays.stream(A).allMatch(x->x==0);
boolean zb=Arrays.stream(B).allMatch(x->x==0);
if (za||zb) {
if (za) {
System.out.println(zb?0:-1);
} else {
System.out.println(za?0:-1);
}
} else if (N==1) {
long a=A[0],b=B[0];
for (int i=0;i<p-1;++i) {
if (pow(2,i)*a%p==b) {
System.out.println(i+1);
for (int j=0;j<i;++j) System.out.println(1+" "+1+" "+1);
System.out.println(2);
return;
}
}
System.out.println(-1);
} else {
ArrayList<Pair> ans=new ArrayList<Main.Pair>();
int sqrtp=(int)Math.ceil(Math.sqrt(p));
if (N>2*sqrtp) {
int s0=N-1;
while (A[s0]==0) --s0;
if (s0<2*sqrtp) {
add(ans,A,2*sqrtp,s0);
s0=2*sqrtp;
}
for (int shift=0;shift<=17;++shift) {
for (int i=0;i<sqrtp;++i) {
long x=((i+1)+p-A[i])*inv(A[s0])%p;
if (x%2==1) add(ans, A, i, s0);
}
for (int i=sqrtp;i<2*sqrtp;++i) {
long x=(sqrtp*(i-sqrtp+1)+p-A[i])*inv(A[s0])%p;
if (x%2==1) add(ans, A, i, s0);
}
add(ans, A, s0, s0);
}
for (int i=2*sqrtp;i<N;++i) {
long diff=(p+B[i]-A[i])%p;
if (diff>=sqrtp) {
add(ans, A, i, sqrtp-1+(int)(diff/sqrtp));
}
diff %= sqrtp;
if (diff>0) add(ans, A, i, (int)diff-1);
assert(A[i]==B[i]);
}
}
int s1=0;
int s0=0;
while (A[s0]==0) ++s0;
while (B[s1]==0) ++s1;
if (s0==s1) {
int ns0=(s0+1)%N;
if (A[ns0]==0) add(ans, A, ns0, s0);
s0=ns0;
}
assert(A[s0]>0 && B[s1]>0 && s0 != s1);
for (int shift=0;shift<=17;++shift) {
for (int i=0;i<N;++i) {
if (i!=s0) {
// A[i]=B[i]-A[s]x
// x=(B[i]-A[i])/A[s]
long x=(B[i]+p-A[i])*inv(A[s0])%p;
if (x%2==1) add(ans, A, i, s0);
}
}
add(ans, A, s0, s0);
}
// A[s1] != 0 を仮定
solve2(ans, A, B, s1, s0);
assert(Arrays.equals(A, B));
System.out.println(ans.size()+1);
for (Pair query:ans) {
System.out.println(query);
}
System.out.println(2);
}
}
static void tr(Object... objects) {
System.out.println(Arrays.deepToString(objects));
}
}
class FastScanner {
private final InputStream in = System.in;
private final byte[] buffer = new byte[1024];
private int ptr = 0;
private int buflen = 0;
private boolean hasNextByte() {
if (ptr < buflen) {
return true;
} else {
ptr = 0;
try {
buflen = in.read(buffer);
} catch (IOException e) {
e.printStackTrace();
}
if (buflen <= 0) {
return false;
}
}
return true;
}
private int readByte() {
if (hasNextByte())
return buffer[ptr++];
else
return -1;
}
private static boolean isPrintableChar(int c) {
return 33 <= c && c <= 126;
}
public boolean hasNext() {
while (hasNextByte() && !isPrintableChar(buffer[ptr]))
ptr++;
return hasNextByte();
}
public String next() {
if (!hasNext())
throw new NoSuchElementException();
StringBuilder sb = new StringBuilder();
int b = readByte();
while (isPrintableChar(b)) {
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
public long nextLong() {
if (!hasNext())
throw new NoSuchElementException();
long n = 0;
boolean minus = false;
int b = readByte();
if (b == '-') {
minus = true;
b = readByte();
}
if (b < '0' || '9' < b) {
throw new NumberFormatException();
}
while (true) {
if ('0' <= b && b <= '9') {
n *= 10;
n += b - '0';
} else if (b == -1 || !isPrintableChar(b)) {
return minus ? -n : n;
} else {
throw new NumberFormatException();
}
b = readByte();
}
}
public int nextInt() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
throw new NumberFormatException();
return (int) nl;
}
public double nextDouble() {
return Double.parseDouble(next());
}
}