RE求条

#include <bits/stdc++.h>
using namespace std;
const int N=25;
const int M=1e5/3+1;
int n,m,a[N],dp[M]; 
string s;
int main(){
	scanf("%d",&n);
	for(int i=1;i<=n;++i){
		scanf("%d",&a[i]);
		for(int j=i;j<=M;++j){
			dp[j]=max(dp[j],dp[j-i]+a[i]);
		}
	}
	int ans=0,k=0,i=0;
	scanf("%d",&m);
	cin>>s;
	s+="  ";
	while(i<=m){
		if(s[i]=='a'&&s[i+1]=='b'&&s[i+2]=='c'){
			++k;
			i+=3;
		}else{
			++i;
			ans+=dp[k];
			k=0;
		}
	} 
	printf("%d",ans);
	return 0;
}