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代码

Posted by phython at 2017-03-07 21:49:31 on Problem 3254
#include <cstdio>
#include <iostream>
using namespace std;
int M,N;
const int MOD = 100000000;
int dp[1<<13][20];//dp[state][i]
int map[20];
int cnt;
int state[1<<13];
int solve()
{
	//初始化工作
	for(int S = 0;S < (1<<N);S++) {if((S&(S<<1)) == 0) state[cnt++] = S;}
	for(int i = 0;i < cnt;++i) if((state[i]&map[0]) == 0) dp[state[i]][0] = 1;
	for(int i = 1;i < M;i++) 
	{
		for(int j = 0;j < cnt;j++)
		{
			if(state[j]&map[i]) continue;
			for(int k = 0;k < cnt;++k)
			{
				if(state[j]&state[k] ) continue;
				dp[state[j]][i] = (dp[state[j]][i] + dp[state[k]][i-1])%MOD;
			} 
		}
	}
	int ans = 0;
	for(int i = 0;i < cnt;++i) /*if(state[i]&map[M-1] != 0 )*/ ans = (ans + dp[state[i]][M-1])%MOD;
	return ans;
}
int main()
{
	cin>>M>>N;
	for(int i = 0;i < M;i++)
	{
		for(int j = 0;j < N;j++)
		{
			int tem;cin>>tem;
			if(!tem) map[i] |= 1<<(N-j-1);
		}
	}
	cout<<solve()<<endl;
	return 0;
 } 

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