标签:des style blog class code c
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#include <iostream> #include <cstdio> #include <cstring> #include <vector> #include <string> #include <algorithm> #include <queue> using namespace std; int n; vector<int>digit; int dp[12][10][13]; int dfs(int pos,int statu,int reminder,int done){ if(pos==-1) return statu==2&&reminder==0; if(!done && ~dp[pos][statu][reminder]) return dp[pos][statu][reminder]; int end = done? digit[pos]:9; int res = 0; for(int i = 0; i <= end; i++){ int tsta = statu; int re = (reminder*10+i)%13; if(statu == 0&&i == 1) tsta = 1; if(statu == 1&&i==3) tsta = 2; if(statu == 1 && i != 1 && i != 3) tsta = 0; res += dfs(pos-1,tsta,re,done&&i==end); } if(!done) dp[pos][statu][reminder] = res; return res; } int solve(int num){ digit.clear(); while(num){ digit.push_back(num%10); num /= 10; } memset(dp,-1,sizeof dp); return dfs(digit.size()-1,0,0,1); } int main(){ while(cin >> n){ cout<<solve(n)<<endl; } return 0; }
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标签:des style blog class code c
原文地址:http://blog.csdn.net/mowayao/article/details/25974241