結果
| 問題 | No.3421 How Many Peaks? |
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2026-01-21 15:15:57 |
| 言語 | Java (openjdk 25.0.1) |
| 結果 |
AC
|
| 実行時間 | 95 ms / 2,000 ms |
| コード長 | 3,182 bytes |
| 記録 | |
| コンパイル時間 | 2,989 ms |
| コンパイル使用メモリ | 88,384 KB |
| 実行使用メモリ | 47,212 KB |
| 最終ジャッジ日時 | 2026-01-21 15:16:02 |
| 合計ジャッジ時間 | 5,128 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 11 |
ソースコード
import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;
public class Main {
public static void main(String[] args) throws Exception {
FastScanner sc = new FastScanner();
int t = sc.nextInt();
String result = IntStream.range(0, t)
.mapToObj(i -> String.valueOf(function(sc.nextInt(), sc.nextInt(), sc.nextInt(), sc.nextInt()) ? "Yes" : "No"))
.collect(Collectors.joining("\n"));
System.out.println(result);
}
static boolean function(int a, int b, int c, int d) {
return a != 0 && b * b - 3 * a * c > 0;
}
}
class FastScanner {
private DataInputStream din;
private byte[] buffer;
private int bufferPointer, bytesRead;
private static final int BUFFER_SIZE = 1 << 16; // 65,536 バイト
public FastScanner() {
din = new DataInputStream(System.in);
buffer = new byte[BUFFER_SIZE];
bufferPointer = bytesRead = 0;
}
private byte read() {
try {
if (bufferPointer == bytesRead) {
bytesRead = din.read(buffer, 0, BUFFER_SIZE);
if (bytesRead == -1) return -1;
bufferPointer = 0;
}
return buffer[bufferPointer++];
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public String next() {
byte b = read();
// 空白文字を読み飛ばす
while (isSpaceChar(b)) {
b = read();
}
StringBuilder sb = new StringBuilder();
while (!isSpaceChar(b)) {
sb.append((char) b);
b = read();
}
return sb.toString();
}
public int nextInt() {
int ret = 0;
byte c = read();
while (isSpaceChar(c)) c = read();
boolean neg = (c == '-');
if (neg) c = read();
do {
ret = ret * 10 + c - '0';
c = read();
} while (!isSpaceChar(c));
return neg ? -ret : ret;
}
public long nextLong() {
long ret = 0;
byte c = read();
while (isSpaceChar(c)) c = read();
boolean neg = (c == '-');
if (neg) c = read();
do {
ret = ret * 10L + c - '0';
c = read();
} while (!isSpaceChar(c));
return neg ? -ret : ret;
}
public double nextDouble() {
double ret = 0, div = 1;
byte c = read();
while (isSpaceChar(c)) c = read();
boolean neg = (c == '-');
if (neg) c = read();
do {
ret = ret * 10 + c - '0';
c = read();
} while (!isSpaceChar(c) && c != '.');
if (c == '.') {
while (!isSpaceChar(c = read())) {
ret += (c - '0') / (div *= 10);
}
}
return neg ? -ret : ret;
}
private boolean isSpaceChar(byte c) {
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
public void close() {
try {
if (din != null) din.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
tenten