3191149_re.c

北大大牛代码 1240道题的原代码 超级权威

#include <stdio.h>

int team, no[1001];
int teamid[1000000];
int inqueue[1001], pos[1001];
int flag;
int queue[200001], front, back;
int next[200001], prev[200001];

int main()
{
	int i, j, t, p, cas, id;
	char op[10];

	flag = 1;
	cas = 1;
	while(scanf("%d",&team)==1,team)
	{
		printf("Scenario #%d\n",cas++);
		flag ++;
		front = 0;
		back = 0;
		for(i = 1; i <= team; i++)
		{
			scanf("%d",&no[i]);
			for(j = 0; j < no[i]; j++)
			{
				scanf("%d",&id);
				teamid[id] = i;
			}
		}
		while(scanf("%s",op)==1)
		{
			if(op[0]=='S')
				break;
			if(op[0]=='E')
			{
				scanf("%d",&id);
				t = teamid[id];
				queue[back] = id;
				if(inqueue[t]==flag)
				{
					p = pos[t];
					next[prev[back]]++;
					prev[back+1] = prev[back];
					next[back] = next[p];
					prev[next[p]] = back;
					prev[back] = p;
					next[p] = back;
					pos[t] = back;
					back++;
				}
				else
				{
					inqueue[t] = flag;
					pos[t] = back++;
					if(pos[t]==0)
					{
						prev[back] = 0;
						next[pos[0]] = back;
					}
					else
					{
						next[pos[t]] = back;
						prev[back] = pos[t];
					}
				}
			}
			else
			{
				printf("%d\n",queue[front]);
				if(teamid[queue[front]]!=teamid[queue[next[front]]])
				{
					inqueue[queue[front]] = 0;
				}
				front = next[front];
			}
		}
		printf("\n");
	}
	return 0;
}