【bzoj1507】[NOI2003]Editor

第二次写rope了

rope大法好！！！

 #include<algorithm>
 #include<iostream>
 #include<ext/rope>
 #include<cstring>
 #include<string>
 #include<cstdio>
 #include<cmath>
 using namespace __gnu_cxx;
 using namespace std;

 #define N 3000010

 crope l;
 int t;
 int x,now;

 char ch[N],s[];

 int main()
 {
     scanf("%d",&t);
     while (t--)
     {
         scanf("%s",s);
         switch (s[])
         {
             case 'M':
                 scanf("%d",&now);
                 break;
             case 'P':
                 now--;
                 break;
             case 'N':
                 now++;
                 break;
             case 'I':
                 scanf("%d",&x);
                 for (int i=;i<x;i++)
                 {
                     ch[i]=getchar();
                     while (ch[i]=='\n')
                         ch[i]=getchar();
                 }
                 ch[x]=;
                 l.insert(now,ch);
                 break;
             case 'D':
                 scanf("%d",&x);
                 l.erase(now,x);
                 break;
             case 'G':
                 scanf("%d",&x);
                 l.copy(now,x,ch);
                 ch[x]=;
                 puts(ch);
                 break;
         }
     }
     return ;
 }