···cpp
#include<iostream>
#include<fstream>
using namespace std;
long long m[30][30][30];
long long w(long long a, long long b, long long c)
{
if(a<=0||b<=0||c<=0) return 1;
else if(m[a][b][c]!=0) return m[a][b][c];
else if(a>20||b>20||c>20) m[a][b][c]=w(20,20,20);
else if(a<b&&b<c) m[a][b][c]=w(a,b,c-1)+w(a,b-1,c-1)-w(a,b-1,c);
else m[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()
{
long long af,bf,cf;
ofstream fout("fuck.txt");
while(cin>>af>>bf>>cf&&(af!=-1||bf!=-1||cf!=-1))
{
for(int i=0;i<30;i++)
for(int j=0;j<30;j++)
for(int k=0;k<30;k++)
m[i][j][k]=0;
fout<<"w("<<af<<", "<<bf<<", "<<cf<<") = ";
if(af<=0||bf<=0||cf<=0) af=bf=cf=0;
if(af>20||bf>20||cf>20) af=bf=cf=21;
fout<<w(af,bf,cf)<<endl;
}
fout.close();
return 0;
}
···
by yinghy18 @ 2018-12-30 17:54:03
希望更丰富的展现？使用Markdown
```cpp
#include<iostream>
#include<fstream>
using namespace std; long long m[30][30][30];
long long w(long long a, long long b, long long c) {
if(a<=0||b<=0||c<=0)
return 1;
else if(m[a][b][c]!=0)
return m[a][b][c];
else if(a>20||b>20||c>20)
m[a][b][c]=w(20,20,20);
else if(a<b&&b<c)
m[a][b][c]=w(a,b,c-1)+w(a,b-1,c-1)-w(a,b-1,c);
else
m[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() {
long long af,bf,cf;
ofstream fout("fuck.txt");
while(cin>>af>>bf>>cf&&(af!=-1||bf!=-1||cf!=-1)) {
for(int i=0;i<30;i++)
for(int j=0;j<30;j++)
for(int k=0;k<30;k++)
m[i][j][k]=0;
fout<<"w("<<af<<", "<<bf<<", "<<cf<<") = ";
if(af<=0||bf<=0||cf<=0)
af=bf=cf=0;
if(af>20||bf>20||cf>20)
af=bf=cf=21;
fout<<w(af,bf,cf)<<endl;
}
fout.close();
return 0;
}
```
by yizimi远欣 @ 2018-12-30 17:55:52
那个，，，交题时带着个了？
```cpp
ofstream fout("fuck.txt");
fout.close();
```
by yizimi远欣 @ 2018-12-30 17:56:43
~~这优雅的文件名~~
by Chiyoda_Momo @ 2018-12-30 18:01:31