BZOJ1833 数位DP

数位DP随便搞搞.

#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<ctime>
#include<string>
#include<iomanip>
#include<algorithm>
#include<map>
using namespace std;
#define LL long long
#define FILE "dealing"
#define up(i,j,n) for(LL i=j;i<=n;++i)
#define db double
#define ull unsigned long long
#define eps 1e-10
#define pii pair<LL,LL>
LL read(){
	LL x=0,f=1,ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=(x<<1)+(x<<3)+ch-'0';ch=getchar();}
	return f*x;
}
const LL maxn=102,maxm=20000,mod=10000007,inf=(LL)(2e9);
template<class T>bool cmax(T& a,T b){return a<b?a=b,true:false;}
template<class T>bool cmin(T& a,T b){return a>b?a=b,true:false;}
template<class T>T min(T& a,T& b){return a<b?a:b;}
template<class T>T max(T& a,T& b){return a>b?a:b;}
LL a,b,w[20],r[20],cnt[maxn],f[20][20],p,mi[maxn],g[maxn][maxn],sum[maxn];
LL s[20];
void dfs(LL pos,bool flag){
	if(pos==-1)return;
	if(!flag){
		for(LL i=1;i<=9;i++)cnt[i]+=p*(f[pos][i]+mi[pos]*s[i]);
		cnt[0]+=p*(f[pos][0]+s[0]*mi[pos]);
		return;
	}
	for(LL i=0;i<=w[pos];i++){
		bool flg=0;
		for(LL j=1;j<10;j++)if(s[j]){flg=1;break;}
		if(flg||i)s[i]++;
		dfs(pos-1,w[pos]==i);
		if(flg||i)s[i]--;
	}
}
int main(){
	freopen(FILE".in","r",stdin);
	freopen(FILE".out","w",stdout);
	a=read(),b=read()+1;
	mi[0]=1;for(LL i=1;i<=14;i++)mi[i]=mi[i-1]*10;
	for(LL i=1;i<=14;i++){
		for(LL j=0;j<=9;j++){
			f[i][j]=f[i-1][j]*10+mi[i-1];
		}
	}
	w[0]=0;
	while(b){
		w[++w[0]]=b%10;
		b/=10;
	}
	memset(s,0,sizeof(s));
	p=1;dfs(w[0],1);
	up(i,1,w[0]-1)cnt[0]-=mi[i-1];
	LL Max=w[0];
	memset(w,0,sizeof(w));
	while(a){
		w[++w[0]]=a%10;
		a/=10;
	}
	memset(s,0,sizeof(s));
	up(i,1,w[0]-1)cnt[0]+=mi[i-1];
	w[0]=Max;
	p=-1;dfs(Max,1);
	up(i,0,8)printf("%lld ",cnt[i]);printf("%lld
",cnt[9]);
	return 0;
}