結果
問題 | No.619 CardShuffle |
ユーザー |
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提出日時 | 2017-12-19 01:10:02 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 1,099 ms / 3,000 ms |
コード長 | 4,160 bytes |
コンパイル時間 | 3,029 ms |
コンパイル使用メモリ | 78,224 KB |
実行使用メモリ | 95,476 KB |
最終ジャッジ日時 | 2024-12-22 21:37:33 |
合計ジャッジ時間 | 23,754 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 35 |
ソースコード
import java.io.*;import java.util.*;class Main {static final long MOD=1000000007;static int[]c,o;static SegmentTree seg;static void update(int i){if(o[i]==1)seg.update(i,new long[]{-1,0,c[i]});elseseg.update(i,new long[]{c[i],0,1});}public static void main(String[] args) {MyScanner sc = new MyScanner();out = new PrintWriter(new BufferedOutputStream(System.out));int n=sc.nextInt();c=new int[n/2+1];o=new int[n/2+1];for(int i=0;i<n;++i)if(i%2==0)c[i/2]=sc.nextInt();elseo[i/2]=sc.next().equals("*")?1:0;o[n/2]=0;int q=sc.nextInt();seg=new SegmentTree();for(int i=0;i<n/2+1;++i)update(i);for(int i=0;i<q;++i){String t=sc.next();int x=sc.nextInt();int y=sc.nextInt();if(t.equals("!")){x--;y--;if(x%2==1){int temp=o[x/2];o[x/2]=o[y/2];o[y/2]=temp;}else{int taplis=c[x/2];c[x/2]=c[y/2];c[y/2]=taplis;}update(x/2);update(y/2);}else{long[]res=seg.query(x/2,y/2+1);long ans=0;if(res[0]>=0)for(int j=0;j<2;++j)ans=(ans+res[j])%MOD;if(o[y/2]==1)ans=(ans+res[2])%MOD;out.println(ans);}}out.close();}// http://codeforces.com/blog/entry/7018//-----------PrintWriter for faster output---------------------------------public static PrintWriter out;//-----------MyScanner class for faster input----------public static class MyScanner {BufferedReader br;StringTokenizer st;public MyScanner() {br = new BufferedReader(new InputStreamReader(System.in));}String next() {while (st == null || !st.hasMoreElements()) {try {st = new StringTokenizer(br.readLine());} catch (IOException e) {e.printStackTrace();}}return st.nextToken();}int nextInt() {return Integer.parseInt(next());}long nextLong() {return Long.parseLong(next());}double nextDouble() {return Double.parseDouble(next());}String nextLine(){String str = "";try {str = br.readLine();} catch (IOException e) {e.printStackTrace();}return str;}}}class SegmentTree {static final int SIZE = 1 << 18;static final long MOD=1000000007;long[][] seg;SegmentTree() {this.seg = new long[2 * SIZE][3];for(int i=0;i<2*SIZE;++i){seg[i][0]=-1;seg[i][2]=1;}}static long[]comb(long[]a,long[]b){if(a[0]==-1&&b[0]==-1)return new long[]{-1,0,a[2]*b[2]%MOD};if(a[0]==-1&&b[0]>=0)return new long[]{a[2]*b[0]%MOD,b[1],b[2]};if(a[0]>=0&&b[0]==-1)return new long[]{a[0],a[1],a[2]*b[2]%MOD};return new long[]{a[0],(a[1]+b[1]+a[2]*b[0])%MOD,b[2]};}void update(int x, long[]value) {x += SIZE - 1;for(int i=0;i<3;++i)this.seg[x][i] = value[i];while (x > 0) {x = (x - 1) / 2;this.seg[x] = comb(this.seg[2 * x + 1], this.seg[2 * x + 2]);}}long[]query(int a,int b,int l,int r,int k){if(a<=l&&r<=b)return seg[k];if(b<=l||r<=a)return new long[]{-1,0,1};long[]ans1=query(a,b,l,(l+r)/2,2*k+1);long[]ans2=query(a,b,(l+r)/2,r,2*k+2);return comb(ans1,ans2);}long[]query(int l, int r) {return query(l,r,0,SIZE,0);}}