hdu 1080 Human Gene Functions

//Time 0ms, Memory 288K

#include<stdio.h>
#include<string.h>
int main()
{
    int i,j,la,lb,t,map[20][20],dp[105][105],x,y,z;
    char a[105],b[105];
    memset(map,0,sizeof(map));
    map[0][0]=map[2][2]=map[6][6]=map[19][19]=5;
    map[0][2]=map[2][0]=map[0][19]=map[19][0]=map[7][19]=-1;
    map[0][6]=map[6][0]=map[2][19]=map[19][2]=map[6][19]=map[19][6]=map[7][6]=-2;
    map[2][6]=map[6][2]=map[7][0]=-3;
    map[7][2]=-4;
    scanf("%d",&t);
    while(t--)
    {
        scanf("%d%s%d%s",&la,a,&lb,b);
        dp[0][0]=0;
        for(i=1;i<=la;i++)
        {
            dp[i][0]=dp[i-1][0]+map[7][a[i-1]-65];
        }
        for(j=1;j<=lb;j++)
        {
            dp[0][j]=dp[0][j-1]+map[7][b[j-1]-65];
        }
        for(i=1;i<=la;i++)
        {
            for(j=1;j<=lb;j++)
            {
                x=dp[i-1][j-1]+map[a[i-1]-65][b[j-1]-65];
                y=dp[i][j-1]+map[7][b[j-1]-65];
                z=dp[i-1][j]+map[7][a[i-1]-65];
                y=y>z?y:z;
                dp[i][j]=x>y?x:y;
            }
        }
        printf("%d\n",dp[la][lb]);
    }
    return 0;
}