| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 19826 |
2016-02-25T06:02:46 Z |
Namnamseo |
순열 (kriii4_T) |
C++14 |
|
1125 ms |
16708 KB |
#include<cstdio>
long long mans,c,mul[1000003],fac[1000003],a,b,i,j,s=1,ans,X=1e9+7;
long long pow(long long aa,long long bb){
if(bb==0) return 1;
long long ret=pow(aa,bb/2);
ret=(ret*ret)%X;
if(bb&1) ret=(ret*aa)%X;
return ret;
}
main()
{
scanf("%lld%lld",&a,&b);
if(b>=a)
{
printf("0");return 0;
}
fac[0]=1;
for(i=1;i<=a+1;i++)fac[i]=fac[i-1]*i%X;
for(i=b+1;i<=a;i++)
{
mans+=fac[a+1]*(a-i+1)%X*pow(i+1,X-2)%X;
mans%=X;
}
printf("%lld",mans);
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 2 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 3 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 4 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 5 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 6 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 7 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 8 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 9 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 10 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 11 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 12 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 13 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 14 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 15 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 16 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 17 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 18 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 19 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 20 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 21 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 22 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 23 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 24 |
Correct |
1 ms |
16708 KB |
Output is correct |
| 25 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 26 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 27 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 28 |
Correct |
1 ms |
16708 KB |
Output is correct |
| 29 |
Correct |
0 ms |
16708 KB |
Output is correct |
| 30 |
Correct |
0 ms |
16708 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1001 ms |
16708 KB |
Output is correct |
| 2 |
Correct |
338 ms |
16708 KB |
Output is correct |
| 3 |
Correct |
139 ms |
16708 KB |
Output is correct |
| 4 |
Correct |
91 ms |
16708 KB |
Output is correct |
| 5 |
Correct |
134 ms |
16708 KB |
Output is correct |
| 6 |
Correct |
101 ms |
16708 KB |
Output is correct |
| 7 |
Correct |
804 ms |
16708 KB |
Output is correct |
| 8 |
Correct |
478 ms |
16708 KB |
Output is correct |
| 9 |
Correct |
165 ms |
16708 KB |
Output is correct |
| 10 |
Correct |
23 ms |
16708 KB |
Output is correct |
| 11 |
Correct |
333 ms |
16708 KB |
Output is correct |
| 12 |
Correct |
27 ms |
16708 KB |
Output is correct |
| 13 |
Correct |
162 ms |
16708 KB |
Output is correct |
| 14 |
Correct |
701 ms |
16708 KB |
Output is correct |
| 15 |
Correct |
404 ms |
16708 KB |
Output is correct |
| 16 |
Correct |
634 ms |
16708 KB |
Output is correct |
| 17 |
Correct |
302 ms |
16708 KB |
Output is correct |
| 18 |
Correct |
282 ms |
16708 KB |
Output is correct |
| 19 |
Correct |
66 ms |
16708 KB |
Output is correct |
| 20 |
Correct |
367 ms |
16708 KB |
Output is correct |
| 21 |
Correct |
235 ms |
16708 KB |
Output is correct |
| 22 |
Correct |
604 ms |
16708 KB |
Output is correct |
| 23 |
Correct |
231 ms |
16708 KB |
Output is correct |
| 24 |
Correct |
117 ms |
16708 KB |
Output is correct |
| 25 |
Correct |
129 ms |
16708 KB |
Output is correct |
| 26 |
Correct |
420 ms |
16708 KB |
Output is correct |
| 27 |
Correct |
43 ms |
16708 KB |
Output is correct |
| 28 |
Correct |
27 ms |
16708 KB |
Output is correct |
| 29 |
Correct |
1125 ms |
16708 KB |
Output is correct |
| 30 |
Correct |
1120 ms |
16708 KB |
Output is correct |
