学步园

AC代码如下：

#include <iostream>
#include <cstdio>
#include <algorithm>

using namespace std;

int main(){
	int number[1000], N, M;
	while( scanf( "%d%d", &N, &M ) != EOF ){
		for( int i = 0; i < N; i++ ){
			number[i] = i + 1;
		}
		for( int i = 1; i < M; i++ ){
			next_permutation( number, number + N );
		}
		for( int i = 0; i < N - 1; i++ ){
			cout << number[i] << " ";
		}
		cout << number[N-1] << endl;
	}
	return 0;
}