2263915_tle.c

北大大牛代码 1240道题的原代码 超级权威

# include <stdio.h>
# include <string.h>

long p;
int pos[30002][2];

void input()
{
	long i;
	int x, y, num;
	char com[2];

	scanf("%ld",&p);
	memset(pos,-1,sizeof(pos));
	for(i = 0; i < p; i++)
	{
		scanf("%s",com);
		if(com[0]=='M')
		{
			scanf("%d%d",&x,&y);
			while(pos[x][0]!=-1)
				x = pos[x][0];
			while(pos[y][1]!=-1)
				y = pos[y][1];
			pos[x][0] = y;
			pos[y][1] = x;
		}
		else
		{
			scanf("%d",&x);
			num = 0;
			while(pos[x][0]!=-1)
				x = pos[x][0],num++;
			printf("%d\n",num);
		}
	}
}

int main()
{
	input();
	return 1;
}