学步园

#include<iostream>
#include<fstream>
using namespace std;
int times;
char a[101],b[101];
int a_size,b_size;
int result[101][101];
int table[5][5]={
	{5,-1,-2,-1,-3},
	{-1,5,-3,-2,-4},
	{-2,-3,5,-2,-2},
	{-1,-2,-2,5,-1},
	{-3,-4,-2,-1,10000}
};
int ctoi(char x){
	int res=0;
	switch(x){
	case 'A':res=0;break;
	case 'C':res=1;break;
	case 'G':res=2;break;
	case 'T':res=3;break;
	case '-':res=4;break;
	}
	return res;
}
void prepare(){
	memset(result,0,sizeof(result));
	result[0][0]=0;
	for(int i=0;i<a_size;i++){
		result[0][i+1]=result[0][i]+table[ctoi(a[i])][ctoi('-')];
	}
	for(int i=0;i<b_size;i++){
		result[i+1][0]=result[i][0]+table[ctoi(b[i])][ctoi('-')];
	}
}
void doDp(){
	prepare();
	int x,y,z;
	for(int i=1;i<=b_size;i++){
		for(int j=1;j<=a_size;j++){
			x=result[i-1][j-1]+table[ctoi(b[i-1])][ctoi(a[j-1])];
			y=result[i][j-1]+table[ctoi('-')][ctoi(a[j-1])];
			z=result[i-1][j]+table[ctoi(b[i-1])][ctoi('-')];
			result[i][j]=max(x,y);
			result[i][j]=max(result[i][j],z);
		}
	}
}
int main(){
	//streambuf *backup;   
 //   ifstream fin;   
 //   fin.open("data.in");   
 //   backup = cin.rdbuf();   // back up cin's streambuf   
 //   cin.rdbuf(fin.rdbuf()); // assign file's streambuf to cin  
	cin>>times;
	while(times--){
		cin>>a_size;
		cin>>a;
		cin>>b_size;
		cin>>b;
		doDp();
		cout<<result[b_size][a_size]<<endl;
	}
	return 0;
}