题目描述
blablabla
样例
blablabla
算法1
include[HTML_REMOVED]
using namespace std;
int n,m,j,i,sum=0;
void o(int x,int y)
{
if(x==n&&y==m){
sum++;
return ;
}else{
if(x<n) o(x+1,y);
if(y<m) o(x,y+1);
}
}
int main ()
{
scanf(“%d %d”,&n,&m);
o(0,0);
printf(“%d\n”,sum) ;
return 0;
}