ZOJ Problem Set - 1027

#include <iostream>
#include<cstring>

using namespace std;

int ctoi(char a)
{
    int b;
    if(a=='A') b=0;
    if(a=='C') b=1;
    if(a=='G') b=2;
    if(a=='T') b=3;
    if(a=='-') b=4;
    return b;
}
int main()
{
    int t,j,k,m,n;
    int f1,f2,f3;
    int f[101][101];
    int arr[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,-1,0}
    };
    string a,b;
    cin>>t;
    while(t--)
    {
        j=k=0;
        memset(f,0,sizeof(f));
        cin>>m>>a;
        cin>>n>>b;
        for(j=0; j<=m; j++)
        {
            for(k=0; k<=n; k++)
            {
                if(j==0 &&k==0)
                    f[j][k] = 0;
                else if(j==0)
                    f[j][k] = f[j][k-1] + arr[ctoi('-')][ctoi(b[k-1] )];
                else if(k==0)
                    f[j][k] = f[j-1][k] + arr[ctoi(a[j-1])][ctoi('-')];
                else
                {
                    f1 = f[j][k-1] + arr[ctoi('-')][ctoi(b[k-1] )];
                    f2 = f[j-1][k] + arr[ctoi(a[j-1])][ctoi('-')];
                    f3 = f[j-1][k-1] + arr[ctoi(a[j-1])][ctoi(b[k-1])];
                    f[j][k] = max(f1,max(f2,f3));
                }
            }
        }
        cout <<f[m][n]<<endl;
    }
    return 0;
}

/*
#include <iostream>
#include<cstring>
#include<map>

using namespace std;

map<char,int>s;
void init()
{
    s.clear();
    s['A']=0;
    s['C']=1;
    s['G']=2;
    s['T']=3;
    s['-']=4;
}
int main()
{
    init();
    int t,j,k,m,n;
    int f1,f2,f3;
    int f[101][101];
    int arr[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,-1,0}
    };
    string a,b;
    cin>>t;
    while(t--)
    {
        j=k=0;
        memset(f,0,sizeof(f));
        cin>>m>>a;
        cin>>n>>b;
        for(j=0; j<=m; j++)
        {
            for(k=0; k<=n; k++)
            {
                if(j==0 &&k==0)
                    f[j][k] = 0;
                else if(j==0)
                    f[j][k] = f[j][k-1] + arr[s['-']][s[b[k-1]]];
                else if(k==0)
                    f[j][k] = f[j-1][k] + arr[s[a[j-1]] ][s['-']];
                else
                {
                    f1 = f[j][k-1] + arr[s['-']][s[b[k-1]]];
                    f2 = f[j-1][k] + arr[s[a[j-1]] ][s['-']];
                    f3 = f[j-1][k-1] + arr[s[a[j-1]] ][s[b[k-1] ]];
                    f[j][k] = max(f1,max(f2,f3));
                }
            }
        }
        cout <<f[m][n]<<endl;
    }
    return 0;
}
*/