41 lines
781 B
C++
41 lines
781 B
C++
#include<cstdio>
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#include<cstring>
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#include<algorithm>
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#define maxn 1000009
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#define ll long long
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using namespace std;
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const ll mod=987654321;
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ll f[maxn];
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int main()
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{
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ll n,m;
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f[1]=1;
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for(ll i=2;i<maxn-1;i++)
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{
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f[i]=f[i-1]*i;
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if(f[i]>mod)f[i]%=mod;
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}
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while(scanf("%lld%lld",&n,&m)&&(n+m)>0)
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{
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ll ans=1;
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if(n<m||m==1||m==2)
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{
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while(n>0)
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{
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if(n&1)ans*=m;
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if(ans>mod)ans%=mod;
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n>>=1;
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m*=m;
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if(m>mod)m%=mod;
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}
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}
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else
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{
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ans=f[m]+m;
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if(ans>mod)ans%=mod;
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}
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printf("%lld\n",ans);
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}
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return 0;
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}
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