# include & ltstdio.h & gt
int jc(int m){
如果(m!=1)返回m * JC(m-1);
否則返回1;
}
int c(int m,int n){
如果(m & gt=n)返回JC(m)/(JC(n)* JC(m-n));
int main(void){
int m,n;
scanf("%d%d ",& ampm & amp;n);
printf("%d\n ",c(m,n));
返回0;