結果
問題 | No.328 きれいな連立方程式 |
ユーザー | holeguma |
提出日時 | 2015-12-21 00:40:43 |
言語 | Java21 (openjdk 21) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,087 bytes |
コンパイル時間 | 2,355 ms |
コンパイル使用メモリ | 78,060 KB |
実行使用メモリ | 50,472 KB |
最終ジャッジ日時 | 2024-09-17 21:11:48 |
合計ジャッジ時間 | 4,111 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge6 |
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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 | WA | - |
testcase_01 | AC | 53 ms
49,980 KB |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | AC | 46 ms
50,220 KB |
testcase_06 | AC | 50 ms
50,224 KB |
testcase_07 | AC | 49 ms
50,036 KB |
testcase_08 | AC | 45 ms
49,808 KB |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | AC | 48 ms
50,028 KB |
testcase_12 | WA | - |
testcase_13 | AC | 46 ms
50,248 KB |
testcase_14 | AC | 46 ms
50,308 KB |
testcase_15 | AC | 44 ms
50,336 KB |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | AC | 44 ms
50,208 KB |
testcase_21 | AC | 47 ms
49,768 KB |
testcase_22 | AC | 47 ms
50,136 KB |
testcase_23 | WA | - |
testcase_24 | AC | 44 ms
50,300 KB |
testcase_25 | AC | 43 ms
50,340 KB |
testcase_26 | AC | 43 ms
49,976 KB |
testcase_27 | WA | - |
testcase_28 | AC | 44 ms
49,800 KB |
testcase_29 | AC | 44 ms
50,400 KB |
testcase_30 | WA | - |
ソースコード
import java.io.InputStream; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.Arrays; import java.util.Comparator; import java.util.InputMismatchException; import java.util.NoSuchElementException; import java.math.BigInteger; public class Main{ static PrintWriter out; static InputReader ir; static void solve(){ int[] c=ir.nextIntArray(4); if(c[0]==0){ if(c[1]==0&&c[2]==0&&c[3]==0)out.println("R"); else out.println("I"); return; } double p=(double)c[0]/2; double b=p*p-2*p*c[1],a=p*p,cc=c[1]-c[2]*p; if(b*b-4*a*cc<0&&-(b/a)==(c[0]*c[3]-c[1]*c[2])/(c[0]*c[2]-c[1]*c[1])) out.println("I"); else out.println("R"); } public static void main(String[] args) throws Exception{ ir=new InputReader(System.in); out=new PrintWriter(System.out); solve(); out.flush(); } static class InputReader { private InputStream in; private byte[] buffer=new byte[1024]; private int curbuf; private int lenbuf; public InputReader(InputStream in) {this.in=in; this.curbuf=this.lenbuf=0;} public boolean hasNextByte() { if(curbuf>=lenbuf){ curbuf= 0; try{ lenbuf=in.read(buffer); }catch(IOException e) { throw new InputMismatchException(); } if(lenbuf<=0) return false; } return true; } private int readByte(){if(hasNextByte()) return buffer[curbuf++]; else return -1;} private boolean isSpaceChar(int c){return !(c>=33&&c<=126);} private void skip(){while(hasNextByte()&&isSpaceChar(buffer[curbuf])) curbuf++;} public boolean hasNext(){skip(); return hasNextByte();} public String next(){ if(!hasNext()) throw new NoSuchElementException(); StringBuilder sb=new StringBuilder(); int b=readByte(); while(!isSpaceChar(b)){ sb.appendCodePoint(b); b=readByte(); } return sb.toString(); } public int nextInt() { if(!hasNext()) throw new NoSuchElementException(); int c=readByte(); while (isSpaceChar(c)) c=readByte(); boolean minus=false; if (c=='-') { minus=true; c=readByte(); } int res=0; do{ if(c<'0'||c>'9') throw new InputMismatchException(); res=res*10+c-'0'; c=readByte(); }while(!isSpaceChar(c)); return (minus)?-res:res; } public long nextLong() { if(!hasNext()) throw new NoSuchElementException(); int c=readByte(); while (isSpaceChar(c)) c=readByte(); boolean minus=false; if (c=='-') { minus=true; c=readByte(); } long res = 0; do{ if(c<'0'||c>'9') throw new InputMismatchException(); res=res*10+c-'0'; c=readByte(); }while(!isSpaceChar(c)); return (minus)?-res:res; } public double nextDouble(){return Double.parseDouble(next());} public BigInteger nextBigInteger(){return new BigInteger(next());} public int[] nextIntArray(int n){ int[] a=new int[n]; for(int i=0;i<n;i++) a[i]=nextInt(); return a; } public long[] nextLongArray(int n){ long[] a=new long[n]; for(int i=0;i<n;i++) a[i]=nextLong(); return a; } public char[][] nextCharMap(int n,int m){ char[][] map=new char[n][m]; for(int i=0;i<n;i++) map[i]=next().toCharArray(); return map; } } }