結果
| 問題 |
No.1120 Strange Teacher
|
| コンテスト | |
| ユーザー |
 Oland
|
| 提出日時 | 2020-07-23 11:31:35 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 193 ms / 1,000 ms |
| コード長 | 7,349 bytes |
| コンパイル時間 | 2,534 ms |
| コンパイル使用メモリ | 80,112 KB |
| 実行使用メモリ | 53,748 KB |
| 最終ジャッジ日時 | 2024-06-23 17:26:43 |
| 合計ジャッジ時間 | 7,396 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge5 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 27 |
ソースコード
import java.io.*;
import java.math.BigDecimal;
import java.util.*;
@SuppressWarnings("unused")
public class Main {
FastScanner in;
PrintWriter out;
final static int MOD = (int)1e9+7;
void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));}
void solve(){
out.println(task());
}
long task(){
int N = in.nextInt();
long[] A = in.nextLongArray(N), B = in.nextLongArray(N);
if(N == 2){
if(A[0] - B[0] == B[1] - A[1]){
return Math.abs(A[0] - B[0]);
}else{
return -1;
}
}
long sumA = 0, sumB = 0;
for(int i = 0; i < N; i++){
sumA += A[i];
sumB += B[i];
}
if(sumB > sumA || (sumA - sumB) % (N - 2) != 0){
return -1;
}
long K = (sumA - sumB) / (N - 2);
long cnt = 0;
for(int i = 0; i < N; i++){
A[i] -= K;
if(A[i] > B[i] || (B[i] - A[i]) % 2 != 0){
return -1;
}
cnt += (B[i] - A[i]) / 2;
}
if(cnt == K) return K;
else return -1;
}
public static void main(String[] args) {
new Main().m();
}
private void m() {
in = new FastScanner(System.in);
out = new PrintWriter(System.out);
/*
try {
String path = "input.txt";
out = new PrintWriter(new BufferedWriter(new FileWriter(new File(path))));
}catch (IOException e){
e.printStackTrace();
}
*/
solve();
out.flush();
in.close();
out.close();
}
static class FastScanner {
private Reader input;
public FastScanner() {this(System.in);}
public FastScanner(InputStream stream) {this.input = new BufferedReader(new InputStreamReader(stream));}
public void close() {
try {
this.input.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public int nextInt() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
return (int) nl;
}
public long nextLong() {
try {
int sign = 1;
int b = input.read();
while ((b < '0' || '9' < b) && b != '-' && b != '+') {
b = input.read();
}
if (b == '-') {
sign = -1;
b = input.read();
} else if (b == '+') {
b = input.read();
}
long ret = b - '0';
while (true) {
b = input.read();
if (b < '0' || '9' < b) return ret * sign;
ret *= 10;
ret += b - '0';
}
} catch (IOException e) {
e.printStackTrace();
return -1;
}
}
public double nextDouble() {
try {
double sign = 1;
int b = input.read();
while ((b < '0' || '9' < b) && b != '-' && b != '+') {
b = input.read();
}
if (b == '-') {
sign = -1;
b = input.read();
} else if (b == '+') {
b = input.read();
}
double ret = b - '0';
while (true) {
b = input.read();
if (b < '0' || '9' < b) break;
ret *= 10;
ret += b - '0';
}
if (b != '.') return sign * ret;
double div = 1;
b = input.read();
while ('0' <= b && b <= '9') {
ret *= 10;
ret += b - '0';
div *= 10;
b = input.read();
}
return sign * ret / div;
} catch (IOException e) {
e.printStackTrace();
return Double.NaN;
}
}
public char nextChar() {
try {
int b = input.read();
while (Character.isWhitespace(b)) {
b = input.read();
}
return (char) b;
} catch (IOException e) {
e.printStackTrace();
return 0;
}
}
public String nextStr() {
try {
StringBuilder sb = new StringBuilder();
int b = input.read();
while (Character.isWhitespace(b)) {
b = input.read();
}
while (b != -1 && !Character.isWhitespace(b)) {
sb.append((char) b);
b = input.read();
}
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
return "";
}
}
public String nextLine() {
try {
StringBuilder sb = new StringBuilder();
int b = input.read();
while (b != -1 && b != '\n') {
sb.append((char) b);
b = input.read();
}
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
return "";
}
}
public int[] nextIntArray(int n) {
int[] res = new int[n];
for (int i = 0; i < n; i++) {
res[i] = nextInt();
}
return res;
}
public int[] nextIntArrayDec(int n) {
int[] res = new int[n];
for (int i = 0; i < n; i++) {
res[i] = nextInt() - 1;
}
return res;
}
public int[] nextIntArray1Index(int n) {
int[] res = new int[n + 1];
for (int i = 0; i < n; i++) {
res[i + 1] = nextInt();
}
return res;
}
public long[] nextLongArray(int n) {
long[] res = new long[n];
for (int i = 0; i < n; i++) {
res[i] = nextLong();
}
return res;
}
public long[] nextLongArrayDec(int n) {
long[] res = new long[n];
for (int i = 0; i < n; i++) {
res[i] = nextLong() - 1;
}
return res;
}
public long[] nextLongArray1Index(int n) {
long[] res = new long[n + 1];
for (int i = 0; i < n; i++) {
res[i + 1] = nextLong();
}
return res;
}
public double[] nextDoubleArray(int n) {
double[] res = new double[n];
for (int i = 0; i < n; i++) {
res[i] = nextDouble();
}
return res;
}
}
}