摘要：
#include#includeusing namespace std;int k,n;void dfs(int a,int b,int c,int d){ if(kn)return ; dfs(a,b,x,y); --k; if(k==0){printf("%d/%d\n",x,y);k--;return;} dfs(x,y,c,d);}int main(){ int t; scanf("%d",&t); while(t--) { scanf("%d",&n); scanf("%d",&k 阅读全文
