May Zha Corpse Notes

Recent state variance. Save the race and panic.

The consequence of forced queue is that the solo is addicted to the secondary knife addicted to English aids addiction mechanics.

Take advantage of the immediate arrival of public-funded tourism recuperation. However, the exam will be taken immediately.

5.7

Xdu 1158 Orz Fatality

I don't know maths very well.

1#include <iostream>2#include <cstdio>3 using namespacestd;4typedefLong LongLL;5 ConstLL mod = 1e9 +7;6 Const intMAXN = 1e7 +Ten;7 LL FAC[MAXN];8 9ll Qpow (ll A,intb)Ten { OneLL ret =1LL; A      while(b) -     { -         if(B &1) ret = ret * A%MoD; theA = a * a%MoD; -b >>=1; -     } -     returnret; + } -  + ll INV (ll x) A { at     returnQpow (x, mod-2); - } -  - intMainvoid) - { -fac[0] =1LL; in      for(inti =1; i < MAXN; i++) Fac[i] = fac[i-1] * I%MoD; - LL x, y, K; to      while(~SCANF ("%lld%lld%lld", &x, &y, &k)) +     { -         if(k > Y) puts ("0"); the         Else if(k = = y) puts ("1"); *         Else $         {Panax Notoginseng             if(x + y >= maxn | | x + k >= maxn) while(1); -LL ans = fac[x+y] * INV (fac[x+k])% mod * INV (fac[y-k])%MoD; theprintf"%lld\n", ans); +         } A     } the     return 0; +}

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May Zha Corpse Notes