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Petya and Coloring(二)

2014-11-24 10:13:26 · 作者: · 浏览: 1
标签: Petya and Coloring

lld tp=Cal(k,j)*Mul(j,n*(m-2))%mod;
lld tf=Cal(k-j,i-j)*Cal(k-i,i-j)%mod;
lld tg=((dp[n][i]*dp[n][i]%mod)*(fac[i]*fac[i]%mod))%mod;
ans=(ans+((tp*tf%mod)*tg%mod))%mod;
}
}
printf("%I64d\n",ans);
}
}
return 0;
}

*/