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Create 1033.cpp

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Kirigaya Kazuto 2016-07-26 20:19:27 +08:00 committed by GitHub
parent f9fbdb49b7
commit 8cb3165f53
1 changed files with 36 additions and 0 deletions
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#include <cstdio>
#include <cstdlib>
#include <cstring>
using namespace std;
#define INF 0x3f3f3f3f
#define MAXN 21
int pool[MAXN][MAXN][MAXN];
int w(int a,int b,int c)
{
if(a<=0||b<=0||c<=0) return pool[0][0][0];
else if(a>20||b>20||c>20) return w(20,20,20);
if(pool[a][b][c]!=INF) return pool[a][b][c];
if(a<b&&b<c)
{
return pool[a][b][c]=w(a,b,c-1)+w(a,b-1,c-1)-w(a,b-1,c);
}
else
{
return pool[a][b][c]=w(a-1,b,c)+w(a-1,b-1,c)+w(a-1,b,c-1)-w(a-1,b-1,c-1);
}
}
int main()
{
int a,b,c;
int ans;
while(scanf("%d %d %d",&a,&b,&c)==3&&!(a==-1&&b==-1&&c==-1))
{
memset(pool,0x3f,sizeof(int)*MAXN*MAXN*MAXN);
pool[0][0][0]=1;
ans=w(a,b,c);
printf("w(%d, %d, %d) = %d\n",a,b,c,ans);
}
return 0;
}