結果
問題 | No.800 四平方定理 |
ユーザー | Oland |
提出日時 | 2019-03-20 12:20:39 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 126 ms / 2,000 ms |
コード長 | 3,401 bytes |
コンパイル時間 | 2,656 ms |
コンパイル使用メモリ | 78,148 KB |
実行使用メモリ | 73,936 KB |
最終ジャッジ日時 | 2024-09-18 18:17:20 |
合計ジャッジ時間 | 6,077 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 65 ms
69,004 KB |
testcase_01 | AC | 66 ms
69,632 KB |
testcase_02 | AC | 65 ms
69,732 KB |
testcase_03 | AC | 64 ms
69,720 KB |
testcase_04 | AC | 64 ms
68,952 KB |
testcase_05 | AC | 65 ms
69,576 KB |
testcase_06 | AC | 77 ms
69,684 KB |
testcase_07 | AC | 63 ms
69,664 KB |
testcase_08 | AC | 77 ms
69,472 KB |
testcase_09 | AC | 65 ms
69,704 KB |
testcase_10 | AC | 99 ms
70,204 KB |
testcase_11 | AC | 92 ms
73,936 KB |
testcase_12 | AC | 93 ms
70,068 KB |
testcase_13 | AC | 91 ms
70,068 KB |
testcase_14 | AC | 92 ms
69,852 KB |
testcase_15 | AC | 96 ms
70,012 KB |
testcase_16 | AC | 95 ms
69,968 KB |
testcase_17 | AC | 94 ms
69,964 KB |
testcase_18 | AC | 96 ms
70,016 KB |
testcase_19 | AC | 95 ms
69,784 KB |
testcase_20 | AC | 60 ms
68,956 KB |
testcase_21 | AC | 59 ms
68,988 KB |
testcase_22 | AC | 93 ms
69,780 KB |
testcase_23 | AC | 125 ms
70,012 KB |
testcase_24 | AC | 119 ms
69,860 KB |
testcase_25 | AC | 126 ms
70,012 KB |
testcase_26 | AC | 64 ms
69,028 KB |
testcase_27 | AC | 63 ms
68,992 KB |
testcase_28 | AC | 125 ms
69,860 KB |
testcase_29 | AC | 125 ms
69,876 KB |
testcase_30 | AC | 121 ms
69,904 KB |
testcase_31 | AC | 113 ms
69,860 KB |
testcase_32 | AC | 126 ms
70,120 KB |
ソースコード
import java.io.*; import java.util.*; import java.util.Map.Entry; public class Main { final boolean isDebug = false; String fileName = "input.txt"; FastScanner sc; //PrintWriter out; final int MOD = (int)1e9+7; final int INF = Integer.MAX_VALUE / 2; /* solve */ void solve() throws Exception{ int N = sc.nextInt(); int D = sc.nextInt(); int[] map = new int[8000001]; for(int x = 1; x <= N; x++){ for(int y = 1; y <= N; y++){ int k = x * x + y * y; map[k]++; } } long ans = 0; for(int z = 1; z <= N; z++){ for(int w = 1; w <= N; w++){ int k = D + w * w - z * z; if(k >= 0 && k <= 8000000) ans += map[k]; } } System.out.println(ans); } /* end solve */ /* main */ public static void main(String[] args) throws Exception { new Main().m(); } void m() throws Exception { long S = System.currentTimeMillis(); sc = (isDebug) ? new FastScanner(new FileInputStream(fileName)) : new FastScanner(System.in); //out = new PrintWriter(System.out); solve(); //out.flush(); long G = System.currentTimeMillis(); if(isDebug){ System.out.println("---Debug---"); System.out.printf("%8d ms", (G-S)); } } /* end main */ } /* end Main */ class FastScanner { private InputStream in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; public FastScanner(InputStream in) { this.in = in; } 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()); } }