外挂.txt

#pragma comment(linker,"/STACK:65536000")

int readint()   //ÓÃÓÚÕûÊý
{
    char c;
    while (c = getchar(), '-' != c && !isdigit(c))
        if(c == EOF)	return EOF;
    int f = 1;
    if ('-' == c)
        f = -1,c = getchar();
    int x = c - '0';
    while (isdigit(c = getchar()))
        x = x * 10 + c - '0';
    return x * f;
}

void write(int a) {  //ÓÃÓÚÕýÕûÊý 
  if(a>9) write(a/10); 
  putchar(a%10+'0'); 
}

#include <cstdio>
#include <ext/rope>
 
__gnu_cxx::crope s;
int t,cur,k,i;
char op[10],buf[1<<21],c;
 
int main()
{
    scanf("%d",&t);
    for(;t>0;t--)
    {
        scanf("%s",op);
        switch(op[0])
        {
            case 'M':
                scanf("%d",&cur);
                break;
            case 'I':
                scanf("%d",&k);i=0;
                while(k)
                {
                    c=getc(stdin);
                    if(c>=32&&c<=126)
                    {
                        buf[i++]=c;
                        k--;
                    }
                }
                buf[i]=0;
                s.insert(cur,buf);
                break;
            case 'D':
                scanf("%d",&k);
                s.erase(cur,k);
                break;
            case 'G':
                scanf("%d",&k);
                puts(s.substr(cur,k).c_str());
                break;
            case 'P':
                cur--;
                break;
            case 'N':
                cur++;
                break;
        }
    }
    return 0;
}