15 lines
215 B
C++
15 lines
215 B
C++
#include<cstdio>
|
|
int main()
|
|
{
|
|
int n,m;
|
|
scanf("%d%d",&m,&n);
|
|
int map[n];
|
|
for(int i=0;i<n;i++) map[i]=1;
|
|
for(int i=2;i<=m;i++)
|
|
for(int j=1;j<n;j++)
|
|
map[j]+=map[j-1];
|
|
printf("%d\n",map[n-1]);
|
|
return 0;
|
|
}
|
|
|