OJ-Problems-Source/HDOJ/3259_autoAC.cpp

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#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;
const int MaxN = 3005;
char s1[MaxN],s2[MaxN];
typedef long long LL;
LL dp[2][MaxN];
int main()
{
int T,cas=0;scanf("%d",&T);
while(T--)
{
scanf("%s%s",s1,s2+1);
int n = strlen(s2+1), m = strlen(s1);
bool ok = 1;
for(int i = 1; i <= n; i++)if(s2[i]!='*')ok=0;
if(ok)
{
printf("Case %d: %d\n",++cas,m*(m+1)/2);
continue;
}
memset(dp, 0, sizeof(dp));
for(int i = 0; i <= m; i++)dp[0][i]= 1;
ok = 1;
bool first = 1;
for(int i = 1; i <= n; i++)
{
int p = i&1;
int q = 1-p;
if(s2[i]=='*')
{
dp[p][0] = dp[q][0];
if(first)
for(int j = 1; j <= m; j++)
dp[p][j] = dp[p][j-1]+dp[q][j];
else
{
LL mx = dp[q][0];
for(int j = 1; j <= m; j++)
{
mx = max(mx, dp[q][j]);
dp[p][j] = mx;
}
}
first = 0;
}
else if(s2[i]=='?')
{
dp[p][0] = 0;
for(int j = 1; j <= m; j++)
dp[p][j] = dp[q][j-1];
}
else
{
dp[p][0] = 0;
for(int j = 1; j <= m; j++)
{
if(s1[j-1]==s2[i])dp[p][j] = dp[q][j-1];
else dp[p][j] = 0;
}
}
}
LL ans = 0;
for(int i = 1; i <= m; i++)
ans += dp[n&1][i];
printf("Case %d: %I64d\n",++cas,ans);
}
return 0;
}