#2错了求助！！！

附上代码

#include<bits/stdc++.h>
using namespace std;
long long ret[105][105][105]={0};
long long x,y,z;
long long s1[10010],s2[10010],s3[10010],s[10010]; 
long long w(long long a,long long b,long long c){
    if(a<=0||b<=0||c<=0) return 1;
    if(a>20||b>20||c>20) return w(20,20,20);
    long long k;
    if(ret[a][b][c]) return ret[a][b][c];
    if(a<b&&b<c) k=w(a,b,c-1)+w(a,b-1,c-1)-w(a,b-1,c);
    else k=w(a-1,b,c)+w(a-1,b-1,c)+w(a-1,b,c-1)-w(a-1,b-1,c-1);
    ret[a][b][c]=k;
    return k;
}
int main(){
    long long i=0;
    while(true){
        cin>>x>>y>>z;
        if(x!=-1||y!=-1||z!=-1){
            s1[i]=x;
            s2[i]=y;
            s3[i]=z;
            s[i]=w(x,y,z);
            i++;
        }
        else break;
    }
    for(long long j=0;j<i;j++){
        cout<<"w("<<s1[j]<<", "<<s2[j]<<", "<<s3[j]<<") = "<<s[j];
        if(j!=i-1) cout<<endl;
    }
    return 0;
}