作者:初来乍到1231 | 来源:互联网 | 2023-06-04 00:24
#include#include#includeusingnamespacestd;#definemaxn2005chars[maxn];intdp[maxn][maxn],c
# include
# include
#include
using namespace std;
# define maxn 2005
char s[maxn];
int dp[maxn][maxn],cost[maxn];
int main()
{
int n,m,a,b,i,j;
char temp;
while(scanf("%d%d",&n,&m)!=EOF)
{
memset(dp,0,sizeof(dp));
getchar();
scanf("%s",s+1);
getchar();
for(i=1;i<=n;i++)
{
scanf("%c %d%d",&temp,&a,&b);
getchar();
cost[temp-‘a‘] = min(a,b);
}
for(j=1;j<=m;j++)
for(i=j+1;i>=1;i--)
{
dp[i][j] = min(dp[i+1][j]+cost[s[i]-‘a‘] , dp[i][j-1]+cost[s[j]-‘a‘]) ;
if(s[i]==s[j])
dp[i][j] = min(dp[i+1][j-1],dp[i][j]);
}
printf("%d\n",dp[1][m]);
}
return 0;
}