HDU 1080 Human Gene Functions (DP) by kuangbin

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1080

#include<stdio.h>
#include<algorithm>
using namespace std;
int dp[110][110];
int Maxtri[5][5]=
{   
    {0,-3,-4,-2,-1},
    {-3,5,-1,-2,-1},
    {-4,-1,5,-3,-2},
    {-2,-2,-3,5,-2},
    {-1,-1,-2,-2,5}
};    
int num1[110];
int num2[110];
int main()
{
   // freopen("test.in","r",stdin);
   // freopen("test.out","w",stdout);
    int T;
    int n,m;
    char ch;
    scanf("%d",&T);
    while(T--)
    {
        scanf("%d",&n);
        getchar();
        for(int i=1;i<=n;i++)
        {
            scanf("%c",&ch);
            if(ch=='A') num1[i]=1;
            else if(ch=='C') num1[i]=2;
            else if(ch=='G') num1[i]=3;
            else if(ch=='T') num1[i]=4;
        }    
        scanf("%d",&m);
        getchar();
        for(int i=1;i<=m;i++)
        {
            scanf("%c",&ch);
            if(ch=='A') num2[i]=1;
            else if(ch=='C') num2[i]=2;
            else if(ch=='G') num2[i]=3;
            else if(ch=='T') num2[i]=4;
        }    
        dp[0][0]=0;
        for(int i=1;i<=n;i++)  dp[i][0]=dp[i-1][0]+Maxtri[num1[i]][0];
        for(int i=1;i<=m;i++)  dp[0][i]=dp[0][i-1]+Maxtri[0][num2[i]];
        for(int i=1;i<=n;i++)
        {
            for(int j=1;j<=m;j++)
            {
                dp[i][j]=max(dp[i-1][j-1]+Maxtri[num1[i]][num2[j]],max(dp[i-1][j]+Maxtri[num1[i]][0],dp[i][j-1]+Maxtri[0][num2[j]]));
            }    
        }   
        printf("%d\n",dp[n][m]); 
        
    }    
}