poj 1732

dp

代码：

#include<iostream>
#include<fstream>

using namespace std;

int dp[101];
char c[110];

char hash[30]="22233344115566070778889990";
int road[101];

int n;
char a[50001][51];

char b[50001][51];

void print(int s){
	if(s!=0)
	{
		print(s-strlen(a[road[s]]));
		cout<<b[road[s]]<<' ';
	}
}

void read(){
//	ifstream cin("in.txt");
	int i,j,k;
	while(cin>>c){
	cin>>n;
	for(i=1;i<=n;i++)
	{
		cin>>b[i];
		for(j=0;j<strlen(b[i]);j++)
			a[i][j]=hash[b[i][j]-'a'];
		a[i][strlen(b[i])]='\0';
	}
	for(i=1;i<=strlen(c);i++)
		dp[i]=strlen(c)+1;
	dp[0]=0;
	for(i=1;i<=strlen(c);i++)
		for(j=1;j<=n;j++)
			if(i>=strlen(a[j])&&strncmp(&c[i-strlen(a[j])],a[j],strlen(a[j]))==0)
			{
				if(dp[i]>dp[i-strlen(a[j])]+1)
				{
					dp[i]=dp[i-strlen(a[j])]+1;
					road[i]=j;
				}
			}
	if(dp[strlen(c)]==strlen(c)+1)
		cout<<"No solution."<<endl;
	else
	{
		print(strlen(c));
		cout<<endl;
	}
	}
}

int main(){
	read();
	return 0;
}