#include
#inclue
int main()
{
int n,a[1001];
scanf("%d",&n);//n 个元素
int i;
for(i=0;i
bool flag[100001];
int b[1001];
memset(flag,0,sizeof(flag));
memset(b,0,sizeof(b));
int num=0;
for(i=0;i
if(flag[i]==0) flag[i]=1;
else
{
b[i]=1; num++;
}
}
printf("delete %d\n",num);
for(i=0;i
}