輸入你想輸入的字符的個數(shù)，輸出它的全排列形式，輸出一共有多少種方法

#include<algorithm>

#include<cstdio>

using namespace std;

int ans=0;

int main()

{

char s[200];

int n;

while(scanf("%d %s",&n,s)!=EOF)

{

sort(s,s+n);

do

  puts(s);

ans++;

}while(next_permutation(s,s+n));

 PRintf("%d",ans);

}                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    return 0;

}