pku2085.cpp

这是ACM 方面的资料 是PKU的 北京大学的出来的

#include <stdio.h>

int l, m;

void Solve()
{
	int i, pm, pos;
	pos = 1;
	pm = m;
	while (pm >= pos)
	{
		pm -= pos;
		pos++;
	}
	pos = l - pos;
	pm = pos + pm;
	for (i = 0; i < pos - 1; i++)
	{
		printf("%d ", i + 1);
	}
	if (pm)
		printf("%d ", pm);
	for (i = l; i >= pos; i--)
	{
		if (i != pm)
			printf("%d ", i);
	}
	printf("\n");
}

int main()
{
	while (EOF != scanf("%d %d", &l, &m) && l != -1 && m != -1)
	{
		Solve();
	}
}