【题解】【bzoj1174】[Balkan2007]Toponyms —— by tense

#include<bits/stdc++.h>
using namespace std;
int a[5000][53],size=1,f[5000],ans;
string s;
int insert(){
    int now=0,len=s.length(),pos,i;
    for(i=0;i<len;++i){
        if(s[i]==' ')pos=52;
        else if(s[i]<='Z')pos=s[i]-'A';
        else pos=s[i]-'a'+26;
        if(a[now][pos])now=a[now][pos];
        else now=a[now][pos]=++size;
        f[now]++;
        ans=max(ans,f[now]*(i+1));
    }
}
int main(){
    freopen("a.in","r",stdin);
    //freopen("a.out","w",stdout);
    int i,n;
    cin>>n;
    for(i=1;i<=n;++i){
        getline(cin,s);
        insert();
    }
    printf("%d",ans);
    return 0;
}