#include <iostream>
#include <memory.h>
#include <map>
#include <string>
#include <functional>
#include <vector>
using namespace std;
typedef long long ll;
const ll mod=100000000000;
int main() {
ios::sync_with_stdio(false);
ll n, k;
cin >> n >> k;
ll res =0;
ll tmp = 0;
ll a;
for (ll i = 0; i <= n; i++)
{
tmp = tmp * i;
if (i == 0)
tmp = 1;
a = 1;
for (int j = 0; j < k; j++)
a = (tmp*a) % mod;
res = res + a;
}
while (1)
{
if (res == 0)
return 0;
if (res % 10) {
cout << res % 10 << endl;
return 0;
}
else
res =res/ 10;
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
248 KB |
answer is '4' |
| 2 |
Correct |
2 ms |
356 KB |
answer is '2' |
| 3 |
Correct |
2 ms |
464 KB |
answer is '2' |
| 4 |
Correct |
1 ms |
572 KB |
answer is '2' |
| 5 |
Correct |
2 ms |
616 KB |
answer is '2' |
| 6 |
Correct |
1 ms |
616 KB |
answer is '4' |
| 7 |
Correct |
2 ms |
636 KB |
answer is '6' |
| 8 |
Correct |
2 ms |
640 KB |
answer is '1' |
| 9 |
Correct |
2 ms |
644 KB |
answer is '2' |
| 10 |
Correct |
2 ms |
648 KB |
answer is '6' |
| 11 |
Correct |
2 ms |
652 KB |
answer is '4' |
| 12 |
Correct |
1 ms |
656 KB |
answer is '5' |
| 13 |
Correct |
1 ms |
660 KB |
answer is '2' |
| 14 |
Correct |
2 ms |
664 KB |
answer is '3' |
| 15 |
Correct |
1 ms |
756 KB |
answer is '4' |
| 16 |
Correct |
2 ms |
760 KB |
answer is '5' |
| 17 |
Correct |
1 ms |
764 KB |
answer is '6' |
| 18 |
Correct |
1 ms |
768 KB |
answer is '7' |
| 19 |
Correct |
2 ms |
772 KB |
answer is '8' |
| 20 |
Correct |
1 ms |
776 KB |
answer is '9' |
| 21 |
Correct |
1 ms |
780 KB |
answer is '1' |
| 22 |
Correct |
2 ms |
784 KB |
answer is '6' |
| 23 |
Correct |
1 ms |
792 KB |
answer is '3' |
| 24 |
Correct |
2 ms |
812 KB |
answer is '7' |
| 25 |
Correct |
1 ms |
816 KB |
answer is '3' |
| 26 |
Correct |
1 ms |
820 KB |
answer is '1' |
| 27 |
Correct |
2 ms |
824 KB |
answer is '2' |
| 28 |
Correct |
1 ms |
956 KB |
answer is '1' |
| 29 |
Correct |
1 ms |
956 KB |
answer is '1' |
| 30 |
Correct |
2 ms |
956 KB |
answer is '1' |
| 31 |
Correct |
2 ms |
956 KB |
answer is '4' |
| 32 |
Correct |
1 ms |
956 KB |
answer is '4' |
| 33 |
Incorrect |
2 ms |
956 KB |
expected '4', found '6' |
| 34 |
Halted |
0 ms |
0 KB |
- |
