| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 19549 |
2016-02-24T17:45:31 Z |
Namnamseo |
Ω (kriii4_P3) |
C++14 |
|
0 ms |
1084 KB |
#include <cstdio>
typedef long long ll;
const int M=int(1e9)+7;
ll pow(ll a,ll b){
if(b==0) return 1;
ll ret=pow(a,b/2);
ret=(ret*ret)%M;
if(b&1) ret=(ret*a)%M;
return ret;
}
int main()
{
int p,q,n,k;
scanf("%d%d%d%d",&p,&q,&n,&k);
if(q==0){
if(k==0) puts("0");
else puts("1");
return 0;
} else if(p==q){
if(k==n) puts("1");
else puts("0");
return 0;
}
ll bunja = (pow(p-q,n) - pow(q,k) * pow(p-q, n-k)%M + M)%M;
ll bunmo = (pow(p-q,n) - pow(q,n) + M)%M;
printf("%d\n",int( bunja*pow(bunmo,M-2)%M ));
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 2 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 3 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 4 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 5 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 6 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 7 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 8 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 9 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 10 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 11 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 12 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 13 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 14 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 15 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 16 |
Correct |
0 ms |
1084 KB |
Output is correct |
| 17 |
Incorrect |
0 ms |
1084 KB |
Output isn't correct |
| 18 |
Halted |
0 ms |
0 KB |
- |
