摘要:
/*n #include #include #include #include #include using namespace std; typedef long long ll; const int MAXN = 6000; const int MOD = 1000000007; int f[MAXN][MAXN] = {{0}}; int n, a, b, k; inl... 阅读全文
摘要:
#include #include #include #include #include #include #define ll long long using namespace std; const int maxn = 100005; const ll mod = 1000000007; struct edge{ int to; int nxt; }; int n,f... 阅读全文