OJ-Problems-Source/HDOJ/3565_autoAC.cpp

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#include <cstdio>
#include <cstring>
#include <iostream>
#define N 35
#define OVER 7
typedef unsigned long long ll;
using namespace std;
char B[N];
char A[N];
int dp[N][10][OVER+1];
int next(int now,int p,int q)
{
switch(now)
{
case 0:return p>0?1:OVER;
case 1:return p>0?1:p<0?2:OVER;
case 2:return p<0?3:q?4:OVER;
case 3:return p<0?3:p&&q-p?5:q?4:OVER;
case 4:return p>0?5:OVER;
case 5:return p<0?6:p>0?5:OVER;
case 6:return p<0?6:OVER;
default:return OVER;
}
}
void DP()
{
memset(dp,128,sizeof(dp));
for(int i = 0 ; i < 10 ; i++)
dp[0][i][OVER-1] = i;
for(int i = 1 ; i < N ; i++)
for(int j = 0 ; j < 10 ; j++)
for(int l = 0 ; l < OVER ; l++)
for(int k = 0 ; k < 10 ; k++)
dp[i][j][l] = max(dp[i][j][l] , dp[i-1][k][next(l,k-j,k)]+j);
}
int find(ll a,ll b)
{
sprintf(B,"%I64u",b);
int len = strlen(B);
sprintf(A,"%0*I64u",len--,a);
int ii,sum = 0,now;
for(ii = 0 ; A[ii] && A[ii]==B[ii] ; ii++)
{
now = !ii ? 0 : next(now,A[ii]-A[ii-1],A[ii]-'0');
sum += A[ii]-'0';
}
int tsum = sum, tnow = now, ans = 0;
for(int i = ii; B[i] ; i++)
{
for( int j = i==ii? A[i] - '0' + 1 : 0 ; j < B[i] - '0' ; j++)
ans = max(ans,dp[len-i][j][!i ? 0 : next(now,j-B[i-1]+'0',j)]+sum);
now = !i ? 0 : next(now,B[i]-B[i-1],B[i]-'0');
sum += B[i]-'0';
}
if(!ii)
{
while(A[ii]=='0')
{
ii++;
if(!A[ii])return ans;
for(int i = A[ii]=='0'?1:A[ii]-'0'+1 ; i < 10 ; i++)
ans = max(ans,dp[len-ii][i][0]);
}
now = 0;
}else now = next(tnow,A[ii]-A[ii-1],A[ii]-'0');
sum = tsum + A[ii] - '0';
for(int i = ++ii;A[i]; i++)
{
for( int j = A[i] - '0' + 1 ; j < 10 ; j++)
ans = max(ans,dp[len-i][j][next(now,j-A[i-1]+'0',j)]+sum);
now = next(now,A[i]-A[i-1],A[i]-'0');
sum += A[i] - '0';
}
return ans;
}
int main()
{
int t,cas = 1;
ll a,b;
scanf("%d",&t);
DP();
while(t--)
{
scanf("%I64u %I64u",&a,&b);
if(!a)a++;
if(!(b+1))b--;
printf("Case %d: %d\n",cas++,find(a-1,b+1));
}
return 0;
}