1 #include <bits/stdc++.h>
2 #define _for(i,a,b) for(int i = (a);i < b;i ++)
3 typedef long long ll;
4 using namespace std;
5 inline ll read()
6 {
7 ll ans = 0;
8 char ch = getchar(), last = ' ';
9 while(!isdigit(ch)) last = ch, ch = getchar();
10 while(isdigit(ch)) ans = (ans << 1) + (ans << 3) + ch - '0', ch = getchar();
11 if(last == '-') ans = -ans;
12 return ans;
13 }
14 inline void write(ll x)
15 {
16 if(x < 0) x = -x, putchar('-');
17 if(x >= 10) write(x / 10);
18 putchar(x % 10 + '0');
19 }
20 int n,m;
21 char lst[1002][1002];
22 int gd[1002];
23 int main()
24 {
25 n = read(),m = read();
26 memset(lst,0,sizeof(lst));
27 memset(gd,0,sizeof(gd));
28 _for(i,0,n)
29 scanf("%s",lst[i]);
30 _for(i,0,m)
31 gd[i] = read();
32
33 int hash[6];
34 int rnt = 0;
35 _for(i,0,m)
36 {
37 memset(hash,0,sizeof(hash));
38 _for(j,0,n)
39 hash[lst[j][i]-'A'] ++;
40 int tmax = 0;
41 _for(j,0,6)
42 tmax = max(tmax,hash[j]);
43 rnt += tmax*gd[i];
44 }
45 write(rnt);
46 return 0;
47 }
