摘要：#include #include #define ll long long #define mod 20100713 const int maxn=1000005; ll a[maxn]; ll poww(ll x,int n) { ll ret=1; while(n) { if(n&1) ret=ret*x%mod; ... 阅读全文

摘要：All the people in the byteland want to stand in a line in such a way that no person stands closer to the front of the line than his father. You are gi 阅读全文