#include #define MOD 1000000007LL using namespace std; typedef long long ll; typedef pair P; int n,k,m; ll a[200005],c[200005]; ll d[200005][205]; ll y[200005]; ll x[200005]; int main(void){ scanf("%d%d%d",&k,&n,&m); for(int i=0;i0){ d[i][j]+=d[i][j-1]; d[i][j]%=MOD; } } } for(int i=0;i