6 1 2 3 4 5 10
1 1 2 1 2 4
#include<iostream> using namespace std; int main() { int t,n; cin>>t; while(t--) { cin>>n; for(int i=1;i<n;i++) n-=i; n=n%9; if(n) cout<<n<<endl; else cout<<9<<endl; } return 0; }
hdu 1597 find the nth digit,布布扣,bubuko.com
原文:http://blog.csdn.net/chaoyueziji123/article/details/38554043