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- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- int *num;
- int *num2;
- int main()
- {
- char ch[5]= {'\0'};
- int n,m,k,x,y,i,l,temp,end,start=0;
- num=(int *)malloc(sizeof(int)*500000);
- scanf("%d%d",&n,&m);
- for(i=0; i<n; i++) scanf("%d",&num[i]);
- for(l=0; l<m; l++)
- {
- scanf("%s",ch);
- //printf("--%s",ch);
- if(ch[0]=='a')
- {
- scanf("%d%d",&x,&y);
- x--;
- y--;
- temp=num[x];
- num[x]=num[y];
- num[y]=temp;
- }
- else if(ch[0]=='b')
- {
- scanf("%d%d",&x,&k);
- x--;
- num[x]=k;
- }
- else if(ch[0]=='c')
- {
- start=0;
- scanf("%d",&x);
- x--;
- for(i=0; i<=x/2; i++)
- {
- temp=num[i];
- num[i]=num[x-i];
- num[x-i]=temp;
- }
- x++;
- end=(n-x)/2;
- //printf("---%d- %d %d-",end,n,x);
- for(i=x;i<=end;i++)
- {
- temp=num[i];
- num[i]=num[n-i];
- num[n-i]=temp;
- }
- //for(i=0;i<n;i++) printf("%d ",num[i]);
- }
- else
- {
- scanf("%d",&x);
- printf("%d\n",num[x-1]);
- }
- memset(ch,'\0',5);
- }
- return 0;
- }
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