Submission #19823

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
19823	2016-02-25 05:59:46	kk1401	괄호 (kriii4_R)	C++98	0 / 100	4 ms	8896 KiB

R

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#include<stdio.h>
#define M 1000000007ll
int n;
long long d[1000001],k;
int main()
{
  int i;
  
  scanf("%d%lld",&n,&k);
  
  d[1] = k;
  
  for(i=2; i<=n; i++){
    if(i%2 == 0) d[i] = (d[i-1] * (k + 1ll)) % M;
    else d[i] = (d[i-1] * (k+1) - d[(i-1)/2] + M) % M;
  }
  
  printf("%lld\n",d[n]);
  
  return 0;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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• Subtask 1: 0 / 8
• Subtask 2: 0 / 92