#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; typedef long long int ll; typedef pair P; const ll MOD=1e8+7; ll powmod(ll a, ll k){ ll ap=a, ans=1; while(k>0){ if(k%2==1){ ans*=ap; ans%=MOD; } ap=ap*ap; ap%=MOD; k/=2; } return ans; } ll inv(ll a){ return powmod(a, MOD-2); } int main() { ll f[200001]; f[0]=1; for(ll i=1; i<=200000; i++) f[i]=f[i-1]*i%MOD; ll invf[200001]; invf[200000]=inv(f[200000]); for(ll i=200000-1; i>=0; i--) invf[i]=invf[i+1]*(i+1)%MOD; int h, w, k; cin>>h>>w>>k; int a[20], b[20]; for(int i=0; i>a[i]>>b[i]; ll c[1<<20]; c[0]=f[h+w]*invf[h]%MOD*invf[w]%MOD; for(int i=1; i<(1< v; for(int j=0; j=pr.first && p.second>=pr.second){ c[i]*=(f[p.first-pr.first+p.second-pr.second]*invf[p.first-pr.first]%MOD*invf[p.second-pr.second]%MOD); c[i]%=MOD; pr=p; }else{ c[i]=0; break; } } } for(int i=0; i