/*
#include <stdio.h>
#include <stdlib.h>
int main()
{
printf("Hello world!\n");
return 0;
}
*/
#include<stdio.h>
int memo[105][105]={0};
int rec(int x, int y)
{
if(x==1||y==1)
{
return memo[x][y]=1;
}
if(memo[x][y]!=0)
{
return memo[x][y];
}
else
{
return memo[x][y] = rec(x-1,y) + rec(x,y-1);
}
}
int main()
{
int n,m,k,x1,y1,x2,y2,x3,y3,r1,r2;
scanf("%d %d",&n,&m,&k);
x1 = 1;
y1 = 1;
x2 = k/m+1;//2
y2 = k%m;//3
x3 = n; //3
y3 = m; //5
r1 = rec(x2,y2);
r2 =
printf("%d",r1*r2);
return 0;
}