1814: Ural 1519 Formula 1 Time Limit: 1 Sec Memory Limit: 64 MBSubmit: 924 Solved: 351[Submit][Status][Discuss] Description 一个 m * n 的棋盘,有的格子存在障碍,求经过所有非障碍格子的哈密顿回路个数 Input The first line contains the integer numbers N and M (2 ≤ N, M ≤ 12). Each of…
If we sum up every digit of a number and the result can be exactly divided by 10, we say this number is a good number. You are required to count the number of good numbers in the range from A to B, inclusive. InputThe first line has a number T (T <=…
#include <bits/stdc++.h> typedef long long LL; const int MOD = (int)1e9 + 7; LL L,R,G,T; int dp[62 + 1][2][2][2][2]; bool vis[62 + 1][2][2][2][2]; inline void add(int &a,int b) { a += b; if (a >= MOD) a -= MOD; if (a < 0) a += MOD; } int c…