Problem:
最短経路

図１に例示するように整数（0 以上 99 以下）をひしがたに並べます。このような、ひしがたを表すデータを読み込んで、一番上からスタートして一番下まで次のルールに従って進むとき、通過する整数の和の最大値を出力するプログラムを作成してください。

各ステップで、対角線上の左下か対角線上の右下に進むことができます。

例えば図1の例では、図2に示すように、7,3,8,7,5,7,8,3,7を選んで通ったとき、その和は最大の 55 （7+3+8+7+5+7+8+3+7=55） となります。

Input

入力例に示すように、カンマで区切られた整数の並びが、ひし形状に与えられます。各行に空白文字は含まれません。入力例は図１に対応しています。
データの行数は 100 行未満です。

Output

ルールに従って通過する整数の和の最大値を１行に出力します。

Sample Input

7
3,8
8,1,0
2,7,4,4
4,5,2,6,5
2,7,4,4
8,1,0
3,8
7

Sample Output

55

Solution in JAVA (judge verdict: Accepted)

import java.util.*;
import java.util.regex.*;

import static java.lang.Math.*;
import static java.lang.System.out;

// AOJ
public class Main {
	Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		new Main().AOJ0089();
	}
	
	// TLE
	void AOJ0070(){
		while(sc.hasNext()){
			int n=sc.nextInt(), s=sc.nextInt(), ans=0;
			for(int i=0; i<=9; i++){
				boolean[] b=new boolean[10];
				b[i]=true;
				ans+=solve70(1,0,i,n,s,b);
			}
			out.println(ans);
		}
	}
	int solve70(int nn, int ss, int x, int n, int s, boolean[] b){	// nn番目 合計ss 次x
		int ans=0;
		if(ss>s)	return 0;
		if(nn>n)	return 0;
		if(nn==n)	ans+=ss+nn*x==s?1:0;
		else if(nn<n){
			for(int i=0; i<=9; i++){
				if(!b[i]){
					boolean[] bb=b.clone();
					bb[i]=true;
					ans+=solve70(nn+1, ss+nn*x, i, n,s,bb);
				}
			}
		}
		return ans;
	}
	
	// TLE
	int p31, q31, a31, n31;
	void AOJ1131(){
		while(sc.hasNext()){
			p31=sc.nextInt(); q31=sc.nextInt(); a31=sc.nextInt(); n31=sc.nextInt();
			int ans=0;
			if(p31==0)	break;
			int G=gcd(max(p31,q31),min(p31,q31));
			p31/=G;	q31/=G;
			for(int i=1; i<=a31; i++)	ans+=solve1131(1, i, 1, i);
			out.println(ans);
		}
	}
	int solve1131(int nn, int aa, int pp, int Q){
		if(aa>a31)	return 0;
		double D=(double)aa/q31;
		if((double)pp/p31>D)	return 0;
		int ans=0;
		if(nn<=n31){
			if((double)pp/p31==(double)aa/q31)	ans++;
			else if(nn<n31 && aa<=a31){
				for(int i=Q; i*aa<=a31; i++)	ans+=solve1131(nn+1, aa*i, pp*i+1*aa, i);
			}
		}
		return ans;
	}
	
	// 途中
	void AOJ0230(){
		while(sc.hasNext()){
			int n=sc.nextInt();
			int[] a=new int[n+1], b=new int[n+1];
			for(int i=1; i<=n; i++)	a[i]=sc.nextInt();
			for(int i=1; i<=n; i++)	b[i]=sc.nextInt();
			out.println(min(solve230(n,a,b),solve230(n,b,a)));
		}
	}
	int solve230(int n, int[] a, int[] b){
		int ans=0;
		ArrayList<Integer> dp=new ArrayList<Integer>();
		dp.add(0);
		for(int i=1; dp.get(dp.size()-1)<n; i++){
			int temp=min(dp.get(i-1),min(dp.get(i-2),dp.get(i-3)));
		}
		
		return ans;
	}
	
	// RE
	void AOJ0089(){	// The Shortest Path on A Rhombic Path
		int[][] dp=new int[200][200];
		dp[1][1]=sc.nextInt();
		int idx=2, lastLen=1;
		while(sc.hasNext()){
			String[] s=sc.next().split(",");
			//debug
			//for(int i=0; i<s.length; i++)	out.println(s[i]);
			//out.println();
			for(int i=1; i<=s.length; i++){
				if(s.length>lastLen)	dp[i][idx]=Integer.parseInt(s[i-1])+max(dp[i][idx-1], dp[i-1][idx-1]);
				else	dp[i][idx]=Integer.parseInt(s[i-1])+max(dp[i][idx-1], dp[i+1][idx-1]);
			}
			
			/*
			String s=sc.nextLine();
			Scanner sc2=new Scanner(s).useDelimiter(",");
			int len=(int)round(s.length()/2.0);
			for(int i=1; i<=len; i++){
				if(len>lastLen)	dp[i][idx]=sc2.nextInt()+max(dp[i][idx-1], dp[i-1][idx-1]);
				else	dp[i][idx]=sc2.nextInt()+max(dp[i][idx-1], dp[i+1][idx-1]);
			}
			*/
			//lastLen=len;
			lastLen=s.length;
			idx++;
		}
		//debug
		/*
		for(int i=0; i<=idx; i++){
			for(int j=0; j<=(int)round(idx/2.0); j++)	out.printf("%4d",dp[j][i]);
			out.println();
		}
		*/
		out.println(dp[1][idx-1]);
		
	}
	
	// 途中
	void AOJ0191(){
		while(sc.hasNext()){
			int n=sc.nextInt(), m=sc.nextInt(), last=0;	// m回
			if(n==0)	break;
			double[][] h=new double[n+1][n+1];
			double[][] dp=new double[n+1][m+1];
			for(int i=1; i<=n; i++){
				for(int j=1; j<=n; j++)	h[j][i]=sc.nextDouble();
			}
			for(int i=1; i<=n; i++)	dp[i][1]=1;
			for(int j=2; j<=m; j++){
				for(int i=1; i<=n; i++){
					for(int k=1; k<=n; k++){
						dp[i][j]=max(dp[i][j], dp[k][j-1]*h[i][k]);
						//debug
						out.print(dp[k][j-1]*h[i][k]+" ");
					}
				}
				out.println();
			}
			//debug
			for(int j=1; j<=m; j++){
				for(int i=1; i<=n; i++)	out.print(dp[i][j]+" ");
				out.println();
			}
			
			double ans=0;
			for(int i=1; i<=n; i++)	ans=max(ans,dp[i][m]);
			out.printf("%.2f\n",ans);
		}
	}
	
	void AOJ0203(){	// A New Plan of Aizu Ski Resort
		while(sc.hasNext()){
			int x=sc.nextInt(), y=sc.nextInt();
			if(x==0)	break;
			int[][] dp=new int[x+3][y+3],b=new int[x+2][y+2];
			for(int j=1; j<=y; j++){
				for(int i=1; i<=x; i++)	b[i][j]=sc.nextInt();
			}
			for(int i=1; i<=x; i++)	dp[i][1]= b[i][1]==1?0:1;
			for(int j=1; j<=y; j++){
				for(int i=1; i<=x; i++){
					// jump2連続を見落としてた
					// if(b[i][j]==2)	dp[i][j]= dp[i][j-1];
					if(b[i][j]==2)	dp[i][j]= b[i][j-1]!=2?dp[i][j-1]:0;
					else if(b[i][j]==0){
						for(int k=i-1; k<=i+1; k++)	dp[i][j]+= b[k][j-1]==0?dp[k][j-1]:0;	
					}
					if(j>2 && b[i][j]!=1)	dp[i][j]+= b[i][j-2]==2?dp[i][j-2]:0;
				}
			}
			
			// debug
			/*
			for(int j=1; j<=y; j++){
				for(int i=1; i<=x; i++)	out.print(dp[i][j]+" ");
				out.println();
			}
			*/
			int ans=0;
			for(int i=1; i<=x; i++)	ans+= dp[i][y]+(b[i][y-1]==2?dp[i][y-1]:0);
			out.println(ans);
		}
		
	}
	
	void AOJ0042(){	// A Thief
		int num=1;
		while(sc.hasNext()){
			int w=sc.nextInt();
			if(w==0)	break;
			int n=sc.nextInt();
			int[][] dp=new int[n+1][w+1];
			int[] ww=new int[n+1], pp=new int[n+1];
			for(int i=1; i<=n; i++){
				Scanner sc2=new Scanner(sc.next()).useDelimiter(",");
				pp[i]=sc2.nextInt();
				ww[i]=sc2.nextInt();
			}
			int ans=0, wei=Integer.MAX_VALUE;
			for(int i=1; i<=n; i++){
				for(int j=1; j<=w; j++){
					dp[i][j]=max(dp[i-1][j], j>=ww[i]?dp[i-1][j-ww[i]]+pp[i]:dp[i-1][j]);
					if(dp[i][j]>ans){
						wei=j;
						ans=dp[i][j];
					}else if(dp[i][j]==ans){
						wei=min(wei,j);
					}
				}
			}
			
			//debug
			/*
			for(int i=0; i<=w; i++){
				for(int j=0; j<=n; j++)	out.printf("%4d",dp[j][i]);
				out.println();
			}
			*/
			
			out.println("Case "+(num++)+":");
			out.println(ans);
			out.println(wei);
		}
	}

	void AOJ0003(){
		int n=sc.nextInt();
		while(n-->0){
			int[] a=new int[3];
			for(int i=0; i<3; i++)	a[i]=sc.nextInt();
			Arrays.sort(a);
			if(a[2]*a[2]==(a[1]*a[1])+(a[0]*a[0]))	out.println("YES");
			else	out.println("NO");
		}
	}
	
	void AOJ0002(){
		while(sc.hasNext())	out.println(new String(""+(sc.nextInt()+sc.nextInt())).length());
	}
	
	void AOJ0516(){
		while(sc.hasNext()){
			int n=sc.nextInt(), k=sc.nextInt(), ans=0;
			if(n==0)	break;
			int[] sum=new int[n+1];
			for(int i=1; i<=n; i++)	sum[i]=sum[i-1]+sc.nextInt();
			for(int i=k; i<=n; i++)	ans=max(ans, sum[i]-sum[i-k]);
			out.println(ans);
		}
	}
	
	c547[][] r;
	final int MOD547=100000;
	void AOJ0547(){	// Commute routes
		while(sc.hasNext()){
			int w=sc.nextInt(), h=sc.nextInt();
			if(w<2)	break;
			r=new c547[w+1][h+1];
			r[2][1]=new c547(0,0,0,1);	r[1][2]=new c547(0,1,0,0);
			for(int x=1; x<=w; x++){
				for(int y=1; y<=h; y++)	r[x][y] = r[x][y]==null?solve547(x,y): r[x][y];
			}
			//r[w][h].list();
			out.println(r[w][h].sum());
		}
	}
	c547 solve547(int x, int y){
		int s1=y-1>0? r[x][y-1].w2:0;
		int s2=y-1>0? (r[x][y-1].s1+r[x][y-1].s2)%MOD547:0;
		int w1=x-1>0? r[x-1][y].s2:0;
		int w2=x-1>0? (r[x-1][y].w1+r[x-1][y].w2)%MOD547:0;
		return new c547(s1, s2, w1, w2);
	}
	class c547{
		int s1, s2, w1, w2;
		c547(int s1, int s2, int w1, int w2){
			this.s1=s1; this.s2=s2; this.w1=w1; this.w2=w2;
		}
		int sum(){
			return (this.s1 + this.s2 + this.w1 + this.w2)%MOD547;
		}
		void list(){
			out.println("("+this.s1+" "+this.s2+" "+this.w1+" "+this.w2+")");
		}
	}
	
	int[][] a1209;
	void AOJ1209(){
		while(sc.hasNext()){
			int n=sc.nextInt();
			if(n<=0)	break;
			a1209=new int[18][n+1];
			for(int i=0; i<=n; i++)	a1209[1][i]=1;
			for(int x=2; x<=17; x++){
				for(int y=1; y<=n; y++)	a1209[x][y]=solve1209(x,y);
			}
			int ans=0;
			for(int i=1; i<=17; i++)	ans+=a1209[i][n];
			out.println(ans);
			
			// debug
			/*
			for(int i=0; i<=n; i++){
				for(int j=0; j<=17; j++)	out.print(a1209[j][i]+" ");
				out.println();
			}
			*/
		}
	}
	int solve1209(int x, int y){
		int ans=0;
		for(int i=x;i>0; i--)	ans+= y-(x*x)>=0?a1209[i][y-(x*x)]:0;
		return ans;
	}
	
	int[][] r515;
	boolean[][] b515;
	void AOJ0515(){	// School Road
		while(sc.hasNext()){
			int xn=sc.nextInt(), yn=sc.nextInt();
			if(xn<=0)	break;
			int n=sc.nextInt();
			b515 = new boolean[xn+1][yn+1];
			for(int i=0; i<n; i++)	b515[sc.nextInt()][sc.nextInt()]=true;
			r515=new int[xn+1][yn+1];
			r515[1][1]=1;
			for(int x=1; x<=xn; x++){
				for(int y=1; y<=yn; y++){
					if(x==1&&y==1)	continue;
					r515[x][y]=solve515(x,y);
				}
			}
			out.println(r515[xn][yn]);
		}
	}
	int solve515(int x, int y){
		int ans=0;
		if(!b515[x][y]){
			ans+= y-1>0? r515[x][y-1]:0;
			ans+= x-1>0? r515[x-1][y]:0;
		}
		return ans;
	}
	
	
	int[] a168;
	void AOJ0168(){	// Kannondou
		while(sc.hasNext()){
			int n=sc.nextInt();
			if(n<=0)	break;
			a168=new int[n+1];
			a168[0]=1;
			for(int i=1; i<=n; i++)	a168[i]=solve168(i);
			int day=(a168[n]/10) + (a168[n]%10==0? 0: 1);
			// out.println("n"+a168[n]+" day"+day);
			out.println(((day/365) + (day%365==0?0 :1)));
		}
	}
	int solve168(int a){
		int ans=0;
		for(int i=a-1; i>=a-3; i--)	ans+= i>=0? a168[i]: 0;
		return ans;
	}
	
	void AOJ0176(){	// What Color?
		int[] R = {0,0,0,0,255,255,255,255};
		int[] G = {0,0,255,255,0,0,255,255};
		int[] B = {0,255,0,255,0,255,0,255};
		HashMap<Integer,String> dic = new HashMap<Integer,String>();
		dic.put(0, "black");	dic.put(1, "blue");	dic.put(2, "lime");	dic.put(3, "aqua");
		dic.put(4, "red");	dic.put(5, "fuchsia");	dic.put(6, "yellow");	dic.put(7, "white");
		while(sc.hasNext()){
			String s=sc.next();
			if(s.equals("0"))	break;
			int r=Integer.parseInt(""+s.charAt(1)+s.charAt(2),16), g=Integer.parseInt(""+s.charAt(3)+s.charAt(4),16), b=Integer.parseInt(""+s.charAt(5)+s.charAt(6),16);
			int index=0;
			double last=Double.MAX_VALUE;
			for(int i=0; i<8; i++){
				double d=sqrt((abs(r-R[i])<<1)+(abs(g-G[i])<<1)+(abs(b-B[i])<<1));
				index = last>d? i : index;
				last = last>d? d : last;
			}
			out.println(dic.get(index));
		}
	}
	
	void AOJ0175(){	// A King in Hawaii
		while(sc.hasNext()){
			int n=sc.nextInt();
			if(n<0)	break;
			StringBuilder sb = new StringBuilder();
			while(n!=0){
				//out.println(n&3);
				sb.append(n&3);
				n=n>>2;
			}
			out.println(sb.length()>0? sb.reverse(): 0);
		}
	}
	
	void AOJ0031(){	// Weight
		while(sc.hasNext()){
			int n=sc.nextInt();
			int temp=Integer.lowestOneBit(n);
			out.print(temp);
			n=(n^temp);
			while(n!=0){
				temp=Integer.lowestOneBit(n);
				out.print(" "+temp);
				n=(n^temp);
			}
			out.println();
		}
	}
	
	void AOJ0051(){	// Differential II
		int n=sc.nextInt();
		for(int i=0; i<n; i++){
			char[] c = sc.next().toCharArray();
			int[] a = new int[8];
			for(int j=0; j<8; j++)	a[j]=Character.digit(c[j], 10);
			Arrays.sort(a);
			StringBuilder sb = new StringBuilder();
			for(int j=0; j<8; j++)	sb.append(a[j]);
			int min=Integer.parseInt(sb.toString());
			sb=new StringBuilder();
			for(int j=7; j>=0; j--)	sb.append(a[j]);
			int max=Integer.parseInt(sb.toString());
			out.println(max-min);
		}
	}
	
	void AOJ0196(){	// Baseball Championship
		while(sc.hasNext()){
			int n=sc.nextInt();
			if(n==0)	break;
			Team196[] teams = new Team196[n];
			for(int i=0; i<n; i++){
				String s=sc.next();
				int win=0, lose=0;
				for(int j=0; j<n-1; j++){
					int temp=sc.nextInt();
					if(temp==0)	win++;
					if(temp==1)	lose++;
				}
				teams[i] = new Team196(s,win,lose,i);
			}
			Arrays.sort(teams);
			for(int i=0; i<n; i++)	out.println(teams[i].name);
		}
	}
	class Team196 implements Comparable<Team196>{
		String name;
		int win,lose,index;
		Team196(String name, int win, int lose, int index){
			this.name=name;	this.win=win;	this.lose=lose;	this.index=index;
		}
		@Override
		public int compareTo(Team196 o) {
			if(this.win<o.win)	return 1;
			if(this.win>o.win)	return -1;
			if(this.lose<o.lose)	return -1;
			if(this.lose>o.lose)	return 1;
			if(this.index<o.index)	return -1;
			if(this.index>o.index)	return 1;
			return 0;
		}
	}
	
	void AOJ0065(){	// Trading
		final int MAX=1000000;
		int[] current=new int[MAX];
		int[] last=new int[MAX];
		boolean flag=false;
		while(sc.hasNext()){
			String s=sc.nextLine();
			if(s.equals("")){
				flag=true;
				continue;
			}
			Scanner sc2 = new Scanner(s).useDelimiter(",");
			if(flag)	last[sc2.nextInt()]++;
			else	current[sc2.nextInt()]++;
		}
		for(int i=0; i<MAX; i++)		if(current[i]>0 && last[i]>0)	out.println(i+" "+(current[i]+last[i]));
	}
	
	void AOJ0161(){	// Sport Meet
		while(sc.hasNext()){
			int n=sc.nextInt();
			if(n==0)	break;
			Time161[] times = new Time161[n];
			for(int i=0; i<n; i++)	times[i] = new Time161(sc.nextInt(), (sc.nextInt()*60+sc.nextInt() + sc.nextInt()*60+sc.nextInt() + sc.nextInt()*60+sc.nextInt() + sc.nextInt()*60+sc.nextInt()));
			Arrays.sort(times);
			out.println(times[0].num);	out.println(times[1].num);	out.println(times[times.length-2].num);
		}
	}
	class Time161 implements Comparable<Time161>{
		int num, time;
		Time161(int num, int time){
			this.num=num;	this.time=time;
		}
		@Override
		public int compareTo(Time161 o) {
			if(this.time<o.time)	return -1;
			if(this.time>o.time)	return 1;
			return 0;
		}
	}
	
	void AOJ0138(){	// Track and Field Competition
		Time138[] times1st = new Time138[8];
		Time138[] times2nd = new Time138[8];
		Time138[] times3rd = new Time138[8];
		for(int i=0; i<8; i++)	times1st[i] = new Time138(sc.nextInt(), sc.nextDouble());
		for(int i=0; i<8; i++)	times2nd[i] = new Time138(sc.nextInt(), sc.nextDouble());
		for(int i=0; i<8; i++)	times3rd[i] = new Time138(sc.nextInt(), sc.nextDouble());
		Arrays.sort(times1st);	Arrays.sort(times2nd);	Arrays.sort(times3rd);
		for(int i=0; i<2; i++)	out.println(times1st[i].num+" "+times1st[i].time);
		for(int i=0; i<2; i++)	out.println(times2nd[i].num+" "+times2nd[i].time);
		for(int i=0; i<2; i++)	out.println(times3rd[i].num+" "+times3rd[i].time);
		Time138[] times = new Time138[6];
		times[0]=times1st[2]; times[1]=times1st[3];	times[2]=times2nd[2]; times[3]=times2nd[3];	times[4]=times3rd[2]; times[5]=times3rd[3];
		Arrays.sort(times);
		for(int i=0; i<2; i++)	out.println(times[i].num+" "+times[i].time);
	}
	class Time138 implements Comparable<Time138>{
		int num;	double time;
		Time138(int num, double time){
			this.num=num;	this.time=time;
		}
		@Override
		public int compareTo(Time138 o) {
			if(this.time<o.time)	return -1;
			if(this.time>o.time)	return 1;
			return 0;
		}
	}
	
	void AOJ0005(){	// GCD and LCM
		while(sc.hasNext()){
			int a=sc.nextInt(), b=sc.nextInt();
			int temp=gcd(max(a,b), min(a,b));
			out.println(temp+" "+max(a,b)/temp*min(a,b));
		}
	}
	int gcd(int x, int y){
		if(y==0)	return x;
		else	return gcd(y, x%y);
	}
	
	int c197=0;
	void AOJ0197(){	// Greatest Common Divisor: Euclidean Algorithm
		while(sc.hasNext()){
			int x=sc.nextInt(), y=sc.nextInt();
			if(x<2)	break;
			c197=0;
			out.println(gcd197(max(x,y), min(x,y))+" "+c197);
		}
	}
	int gcd197(int x, int y){
		if(y==0)	return x;
		c197++;
		return gcd197(y, x%y);
	}
	
	void AOJ0001(){	// List of Top 3 Hills
		int[] m = new int[10];
		for(int i=0; i<10; i++)	m[i]=sc.nextInt();
		Arrays.sort(m);
		for(int i=9; i>=7; i--)	out.println(m[i]);
	}
	
	void AOJ10029(){	// Sort II
		int n=sc.nextInt();
		int[] ans = new int[n];
		for(int i=0; i<n; i++)	ans[i]=sc.nextInt();
		Arrays.sort(ans);
		out.print(ans[0]);
		for(int i=1; i<n; i++)	out.print(" "+ans[i]);
		out.println();
	}
	
	int[][] p26;
	int c26=100;
	void AOJ0026(){	// Dropping Ink
		int ans=0;
		p26 = new int[10][10];
		while(sc.hasNext()){
			Scanner sc2 = new Scanner(sc.nextLine()).useDelimiter(",");
			int x=sc2.nextInt(), y=sc2.nextInt(), s=sc2.nextInt();
			// out.println("x"+x+" y"+y+" s"+s);
			ans=max(solve26(x,y),ans);
			ans=max(solve26(x-1,y),ans);	ans=max(solve26(x+1,y),ans);
			ans=max(solve26(x,y-1),ans);	ans=max(solve26(x,y+1),ans);
			if(s>=2){
				ans=max(solve26(x-1,y-1),ans);	ans=max(solve26(x-1,y+1),ans);
				ans=max(solve26(x+1,y-1),ans);	ans=max(solve26(x+1,y+1),ans);
			}
			if(s>=3){
				ans=max(solve26(x-2,y),ans);	ans=max(solve26(x+2,y),ans);
				ans=max(solve26(x,y-2),ans);	ans=max(solve26(x,y+2),ans);
			}
		}
		out.println(c26);
		out.println(ans);
	}
	int solve26(int x, int y){
		int r=-1;
		if(0<=x && x<=9 && 0<=y && y<=9){
			c26 -= p26[x][y]==0? 1: 0;
			p26[x][y]++;
			r=p26[x][y];
		}
		return r;	// RA
	}
	
	void AOJ0008(){	//Sum of 4 Integers
		while(sc.hasNext()){
			int ans=0, n=sc.nextInt();
			for(int a=0; a<10; a++){
				for(int b=0; b<10; b++){
					for(int c=0; c<10; c++){
						for(int d=0; d<10; d++)		if((a+b+c+d)==n)	ans++;
					}
				}
			}
			out.println(ans);
		}
	}
	
	void AOJ0055(){	// Sequence
		while(sc.hasNext()){
			double last=sc.nextDouble(), ans=last;
			for(int i=2; i<=10; i++){
				ans+= i%2==0? last*2: last/3;
				last = i%2==0? last*2: last/3;
				// out.println(last);
			}
			out.println(ans);
		}
	}
	
	void AOJ0084(){	// Search Engine
		StringBuilder sb = new StringBuilder();
		while(sc.hasNext()){
			String s=sc.next().replaceAll(",", "").replaceAll("\\.", "").replaceAll(" ", "");
			// out.println(s);
			if(s.length()<=2 || s.length()>=7)	continue;
			sb.append(s+" ");
		}
		out.println(sb.deleteCharAt(sb.length()-1));
	}
	
	void AOJ0077(){	// Run Length
		while(sc.hasNext()){
			char[] c=sc.nextLine().toCharArray();
			StringBuilder sb = new StringBuilder();
			for(int i=0; i<c.length; i++){
				if(c[i]=='@'){
					for(int j=0; j<Character.digit(c[i+1], 10); j++)	sb.append(c[i+2]);
					i+=2;
				}else	sb.append(c[i]);
			}
			out.println(sb.toString());
		}
	}
	
	void AOJ0064(){	// Secret Number
		int ans=0;
		while(sc.hasNext()){
			Matcher m = Pattern.compile("\\d+").matcher(sc.nextLine());
			while(m.find())	ans+=Integer.parseInt(m.group());
		}
		out.println(ans);
	}
	
	void AOJ0050(){	// Apple and Peach
		while(sc.hasNext()) out.println(sc.nextLine().replaceAll("apple", "PEACH").replaceAll("peach", "apple").replaceAll("PEACH", "peach"));
	}
	
	void AOJ0039(){	// Roman Figure
		HashMap<Character,Integer> dic = new HashMap<Character,Integer>();
		dic.put('I', 1);	dic.put('V', 5);	dic.put('X', 10);	dic.put('L', 50);
		dic.put('C', 100);	dic.put('D', 500);	dic.put('M', 1000);
		while(sc.hasNext()){
			char[] c = sc.next().toCharArray();
			int ans=0,last=dic.get(c[0]);
			for(int i=0; i<c.length; i++){
				if(last>=dic.get(c[i])){
					ans+=dic.get(c[i]);
					last=dic.get(c[i]);
				}else{
					ans+=dic.get(c[i])-last-last;
					last=dic.get(c[i]);
				}
			}
			out.println(ans);
		}
	}
	
	void AOJ0020(){	// Capitalize
		while(sc.hasNext())	out.println(sc.nextLine().toUpperCase());
	}
}