#include<cstdio>

 #include<cstring>

 #include<iostream>

 using namespace std;

 long long ans[][][];

 inline long long w(long long a, long long b, long long c){

     if(a <=  || b <=  || c <= ) return ;

     else if(ans[a][b][c]) return ans[a][b][c];

     else if(a >  || b >  || c > ) ans[a][b][c] = w(, , );

     else if(a < b && b < c)  ans[a][b][c] = w(a, b, c - ) + w(a, b - , c - ) - w(a, b - , c);

     else ans[a][b][c] = w(a - , b, c) + w(a - , b - , c) + w(a - , b, c - ) - w(a - , b - , c - );

     return ans[a][b][c];

 }

 int main(){

     long long a, b, c;

     while(~scanf("%lld%lld%lld", &a, &b, &c)){

         memset(ans, , sizeof(ans));

         if(a == - && b == - && c == -) break;

         printf("w(%lld, %lld, %lld) = ", a, b, c);

         if(a > ) a = ;

         if(b > ) b = ;

         if(c > ) c = ;

         printf("%lld\n", w(a, b, c));

     }

     return ;

 }