bzoj1055玩具取名

区间dp。记录可行性即可。

#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int c[],len;
bool f[][][],mp[][],flag;
char ch1,ch2;
char gt()
{
    char tmp;
    scanf("%c",&tmp);
    while(tmp<||tmp>)scanf("%c",&tmp);
    return tmp;
}
int num(char c)
{
    if(c=='W')return ;if(c=='I')return ;
    if(c=='N')return ;if(c=='G')return ;
}
char chr(int a)
{
    if(a==)return 'W';if(a==)return 'I';
    if(a==)return 'N';if(a==)return 'G';
}
int main()
{
    scanf("%d%d%d%d",&c[],&c[],&c[],&c[]);
    for(int i=;i<=;i++)
        for(int j=;j<=c[i];j++)
        {
            scanf(" %c%c",&ch1,&ch2);
            mp[num(ch1)*+num(ch2)][i]=;
        }
    ch1=gt();
    while(++len)
    {
        f[len][len][num(ch1)]=;
        scanf("%c",&ch1);
        if(ch1=='\n')break;
    }
    for(int i=;i<=len;i++)
    {
        int lm=len-i+;
        for(int l=;l<=lm;l++)
        {
            int r=l+i-;
            for(int k=l;k<r;k++)
                for(int x=;x<=;x++)
                    if(f[l][k][x])
                        for(int y=;y<=;y++)
                            if(f[k+][r][y])
                                for(int j=;j<=;j++)
                                    f[l][r][j]|=mp[x*+y][j];
        }
    }
    for(int i=;i<=;i++)
        if(f[][len][i])printf("%c",chr(i)),flag=;
    if(!flag)printf("The name is wrong!");
    return ;
}