输出应该有空格叭 QAQ
还有测了样例 `-1 -1 -1` 后还有输出 ing
by maoyiting @ 2021-02-20 15:41:26
@[迟陌](/user/160870)
```
#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
long long f[25][25][25];
long long fun(long long a,long long b,long long c)
{
if(f[a][b][c]!=-1)
return f[a][b][c];
else
{
if(a<=0||b<=0||c<=0)
return 1;
else if(a>20||b>20||c>20)
return f[a][b][c]=fun(20,20,20);
else if(a<b&&b<c)
return f[a][b][c]=fun(a,b,c-1)+fun(a,b-1,c-1)-fun(a,b-1,c);
else
return f[a][b][c]=fun(a-1,b,c)+fun(a-1,b-1,c)+fun(a-1,b,c-1)-fun(a-1,b-1,c-1);
}
}
int main()
{
long long a,b,c;
memset(f,-1,sizeof(f));
while(1)
{
cin>>a>>b>>c;
if(a==-1&&b==-1&&c==-1)
break;
if(a<0||b<0||c<0) cout<<"w("<<a<<", "<<b<<", "<<c<<") = "<<fun(0,0,0)<<endl;
else if(a>20||b>20||c>20) cout<<"w("<<a<<", "<<b<<", "<<c<<") = "<<fun(21,21,21)<<endl;
else
cout<<"w("<<a<<", "<<b<<", "<<c<<") = "<<fun(a,b,c)<<endl;
if(a==-1&&b==-1&&c==-1)
break;
}
return 0;
}
```
by sehst @ 2021-02-20 15:44:17
@[迟陌](/user/160870)
1.输出格式
2.循环的退出条件
by sehst @ 2021-02-20 15:46:29
@[sehst](/user/364532) 谢谢大佬，发现是空格的问题
by 迟陌 @ 2021-02-20 23:51:26
@[maoyiting](/user/171807) 谢谢大佬！在大佬的指点下AC了！
by 迟陌 @ 2021-02-20 23:58:43