Submission #9010

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
9010	2014-09-27 10:33:23	ainta	Actual visible points (kriii2_AC)	C++98	0 / 4	0 ms	4620 KiB

AC

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#pragma warning(disable:4996)
#include<stdio.h>
#include<algorithm>
using namespace std;
int n, m, w[101000];
long long Mod = 1000000007, F[201000], G[201000], Res;
long long Inv(long long a){
  long long cnt = Mod - 2, r = 1;
  while (cnt){
    if (cnt % 2){
      r = r*a%Mod;
    }
    cnt /= 2;
    a = a*a%Mod;
  }
  return r;
}
long long Gap(int a){
  if (a == 0)return 0;
  return F[a + n - 1] * Inv(F[n]) % Mod * Inv(F[a - 1]) % Mod;
}
void Do(int a){
  G[a] = (G[a] + Gap(a) - Gap(a-1) + Mod) % Mod;
  Res = (Res + G[a]) % Mod;
  int i;
  for (i = a * 2; i <= 100000; i += a){
    G[i] = (G[i] + Mod - G[a]) % Mod;
  }
}
int main()
 
 
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